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GE Multilin Motor Management System | MM300-GEHD1CABEXX | Low Voltage Motor Protection Relay

GE Multilin MM300-GEHD1CABEXX low voltage motor management system, integrating protection, control, metering, and communications, graphical HMI with USB, high power supply 80-250VDC/60-300VAC, RS485+DeviceNet+Modbus TCP, 4 relay outputs + 12 digital inputs, 3-phase current and voltage metering, thermal model/overcurrent/ground/unbalance/undervoltage/overvoltage protection, undervoltage autorestart, made in Canada. Order available.
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Product Details

1. Product Overview

The GE MM300-GEHD1CABEXX is a Low Voltage Motor Management System from General Electric's Multilin series, integrating motor protection, control, automation, metering, diagnostics, and multiple communication protocols into one rugged and compact device. Designed for low voltage three-phase AC motor applications, it is suitable for NEMA and IEC standard Motor Control Centers (MCC), delivering superior protection and control to extend equipment life and maximize process uptime.

In industrial production, electric motors are the core power equipment driving pumps, fans, compressors, conveyors, mixers, cranes, and various other mechanical equipment. Motor failures can lead to production line shutdowns, equipment damage, product scrap, and even safety accidents, causing significant economic losses. The function of a motor protection relay (motor management system) is to real-time monitor the motor's operating status (current, voltage, temperature, power, etc.), and promptly issue alarm or trip signals when abnormal conditions such as overload, phase loss, ground fault, jam, overvoltage, undervoltage, etc. occur, protecting the motor from thermal and electrical damage, while providing detailed fault diagnostic information to help maintenance personnel quickly locate and resolve faults, reducing downtime.

The MM300 adopts an advanced thermal model protection algorithm that not only monitors the magnitude of motor current but also calculates the temperature rise status of motor windings and bearings in real-time based on the motor's thermal capacity model. It considers the heat generated by high current during motor starting, overload heating during operation, heat dissipation and cooling processes, and thermal accumulation from frequent forward/reverse starts. This allows more accurate assessment of the motor's thermal status, issuing alarms or trips before the motor truly reaches its thermal limit, both avoiding motor overheating damage and fully utilizing the motor's thermal capacity to reduce unnecessary trips. The thermal model also supports RTD temperature biasing and current unbalance biasing to further improve protection accuracy.

This device provides comprehensive motor protection functions, including: thermal overload protection (49), phase overcurrent protection (50P/51P, instantaneous and time-delayed), ground overcurrent protection (50G/51G), current unbalance/phase loss protection (46), undercurrent/underpower protection (37), start inhibit/starts per hour limit (66), undervoltage protection (27, three-phase and auxiliary), overvoltage protection (59), voltage phase reversal protection (47), mechanical jam/stall protection, excessive start time protection, fuse failure monitoring, thermistor (PTC/NTC) protection, etc. These protection functions cover various fault types that low voltage motors may encounter, ensuring effective protection under various abnormal operating conditions.

In terms of control functions, the MM300 supports multiple motor starting and control methods, including Direct On-Line starting (DOL), star-delta starting, soft starter control, forward/reverse control, two-stage starting, etc. Users can configure starting logic, interlock conditions, timing control, etc. through the front panel or communication interface. This model is configured with undervoltage autorestart function (Option 1), which allows the MM300 to automatically restart the motor according to the set sequence when grid voltage temporarily drops or is interrupted and then restored, reducing manual intervention and improving production continuity. This function is particularly suitable for applications with unstable power supply quality and remote pump stations, fans, etc. that require unattended operation.

The MM300 features accurate electrical metering functions, capable of real-time measuring three-phase current, three-phase voltage, frequency, active power, reactive power, apparent power, power factor, energy consumption, motor running time, number of starts, and other parameters. This model is configured with a 3-phase current input module (Slot B) and a 3-phase voltage metering module (Slot C), enabling complete three-phase electrical quantity measurement and power calculation. Metering data can be viewed through the front panel display or uploaded to DCS/PLC/SCADA systems via communication interfaces for process monitoring, energy management, and equipment maintenance analysis.

In terms of communication functions, this model is configured with rich communication interfaces (Communication Option D), including standard RS485 Modbus RTU interface, DeviceNet slave interface, and 10/100Mbps Modbus TCP Ethernet interface. RS485 Modbus RTU is the most commonly used serial communication protocol in industrial automation, connectable to PLC, DCS, HMI, and other devices; DeviceNet is an industrial fieldbus based on CAN bus, widely used in Rockwell Automation systems; Modbus TCP Ethernet interface can directly connect to the factory Ethernet for high-speed data transmission and remote monitoring. In addition, the graphical control panel is equipped with a USB interface for local configuration, firmware upgrade, and data download. The supporting software is EnerVista MM300, providing a graphical configuration, monitoring, and diagnostic environment.

The MM300's I/O configuration is very flexible. This model is configured with 4 I/O slots (Slot A to Slot D, Slot E is empty):

  • Slot A (C module): 2 x 10A Form-A relay outputs + 6 x 60-300VAC digital inputs
  • Slot B (A module): 3-phase current input + thermal overload/undercurrent/single-phase underpower protection
  • Slot C (B module): 3-phase voltage metering + three-phase underpower/undervoltage/overvoltage/phase reversal protection
  • Slot D (E module): 2 x 10A Form-A relay outputs + 6 x 20-60VDC digital inputs

In total, it provides 4 x 10A Form-A relay outputs (for trip, alarm, start control, etc.), 6 x AC digital inputs (60-300VAC, for contactor auxiliary contacts, limit switches, etc.) and 6 x DC digital inputs (20-60VDC, for PLC outputs, proximity switches, etc.), meeting the I/O requirements of most low voltage motor control and monitoring applications.

The MM300 is equipped with a graphical control panel (Option G), with LCD display and keypad, capable of real-time displaying motor operating parameters, status information, and alarm records, supporting local parameter configuration and operation. The panel is also equipped with a USB interface for convenient configuration and diagnosis using a laptop. All MM300 devices are standard-configured with Harsh Environment Coating, protecting the circuit board from moisture, dust, and corrosive gases, suitable for long-term reliable operation in harsh industrial environments.

This motor management system is widely used in the following industrial applications: pump, fan, compressor protection in petrochemical plants; pumps and blowers in water and wastewater treatment plants; auxiliary motor protection in the power industry; conveyors, crushers, ventilation fans in metallurgy and mining; mills, fans, conveyors in cement and building materials industry; pumps, fans, mixers in paper and pulp industry; pumps, mixers, conveyors in food and beverage industry; process equipment motors in pharmaceutical industry; large fans and water pumps in HVAC systems; motor protection on offshore platforms and ships, etc. In these applications, the MM300 ensures safe and reliable motor operation, providing comprehensive protection, accurate metering, and convenient communication, making it an ideal choice for low voltage motor protection and control.

Note: This product MM300-GEHD1CABEXX is a GE Multilin series low voltage motor management system. The above technical parameters and configuration are from GE official order code manual (MM300 Quick Start Guide Chapter 8) and GE Vernova official product documentation, with accurate and reliable parameters. Installation, wiring, and parameter setting must be performed by professional engineers with electrical operation qualifications, strictly following GE MM300 installation manual and electrical safety operation procedures. When relay outputs are used for trip circuits, ensure correct wiring; CT and VT wiring should pay attention to polarity and phase sequence; communication wiring should follow the wiring specifications of the corresponding protocol. The protection settings of the device should be calculated and set according to motor nameplate parameters and actual operating conditions, and protection function tests and trip tests should be performed before commissioning.

2. Specifications

表格

Parameter Value
Brand GE Multilin (General Electric Multilin series, now part of GE Vernova Grid Solutions)
Product Series Multilin MM300 series low voltage motor management system
Model MM300-GEHD1CABEXX
Product Type Low voltage motor protection relay / motor management system
Applicable Motors Low voltage three-phase AC motors (NEMA and IEC standards)
Applicable Voltage Level Low voltage system (Contact via email for specific voltage range, reference ≤690VAC)
Control Panel Graphical Control Panel, with LCD display and keypad, with USB interface
Interface Language English
Power Supply High type: 80~250VDC / 60~300VAC (High Power Supply)
Power Consumption Contact via email (subject to GE official data sheet)
Communication Interfaces RS485 Modbus RTU (standard) + DeviceNet slave + 10/100Mbps Modbus TCP Ethernet
Front Panel USB Yes (for configuration, firmware upgrade, data download)
Configuration Software EnerVista MM300
Option Configuration Option 1: Standard starter control + event recorder + undervoltage autorestart
Slot A Module (C) 2 x 10A Form-A relay outputs + 6 x 60~300VAC digital inputs
Slot B Module (A) 3-phase current input + thermal overload/undercurrent/single-phase underpower protection
Slot C Module (B) 3-phase voltage metering + three-phase underpower/undervoltage/overvoltage/phase reversal protection
Slot D Module (E) 2 x 10A Form-A relay outputs + 6 x 20~60VDC digital inputs
Slot E Module None (X)
Total Relay Outputs 4 x 10A Form-A relays (Slot A 2 + Slot D 2)
Total Digital Inputs 12 channels (6 x 60~300VAC + 6 x 20~60VDC)
Current Input 3-phase (Slot B module), CT input (Contact via email for CT rating, reference 1A/5A)
Voltage Input 3-phase (Slot C module), direct voltage input (Contact via email for max voltage, reference ≤690VAC)
Thermal Overload Protection (49) Yes, based on thermal model algorithm, supports RTD biasing and unbalance biasing
Phase Overcurrent Protection (50P/51P) Yes, instantaneous and time-delayed
Ground Overcurrent Protection (50G/51G) Yes (requires zero-sequence CT or residual current input, Contact via email for confirmation)
Current Unbalance/Phase Loss Protection (46) Yes, with single phasing detection algorithm
Undercurrent/Underpower Protection (37) Yes
Start Inhibit/Starts per Hour Limit (66) Yes
Undervoltage Protection (27) Yes, three-phase and auxiliary input
Overvoltage Protection (59) Yes
Voltage Phase Reversal Protection (47) Yes
Mechanical Jam/Stall Protection Yes
Excessive Start Time Protection Yes
Fuse Failure Monitoring Yes (VT fuse failure)
Thermistor Protection Yes (PTC/NTC input, Contact via email for confirmation)
RTD Temperature Protection Requires optional RTD module (not configured in this model, Contact via email)
Control Methods Direct On-Line (DOL), star-delta, soft starter control, forward/reverse, two-stage starting
Undervoltage Autorestart Yes (Option 1 configured)
FlexLogic Programmable Logic No (requires Option 3, this model is Option 1)
Waveform Capture No (requires Option 2, this model is Option 1)
Data Logger No (requires Option 2, this model is Option 1)
Event Recorder Yes (standard configuration)
Metering Parameters 3-phase current, 3-phase voltage, frequency, active/reactive/apparent power, power factor, energy, running time, number of starts
Metering Accuracy Contact via email (subject to GE official data sheet, reference 0.5% class for current/voltage)
Harsh Environment Coating Yes (standard configuration)
Operating Temperature Contact via email (subject to GE official data sheet, reference -20°C to +60°C)
Storage Temperature Contact via email (subject to GE official data sheet, reference -40°C to +85°C)
Relative Humidity Contact via email (subject to GE official data sheet, reference 5% to 95% RH non-condensing)
Mounting Method DIN rail mount or panel mount (screw mount for high vibration environments)
Protection Degree Contact via email (subject to GE official data sheet, reference IP20 cabinet installation)
Enclosure Material Contact via email (subject to GE official data sheet)
Dimensions Contact via email (subject to GE official data sheet)
Weight Contact via email (subject to GE official data sheet)
Certifications/Standards Contact via email (CE, UL, CSA, etc., subject to official)
Origin Markham, Ontario, Canada
Replacement Relationship MM300 can replace old MM2 and MM3 series motor relays (requires retrofit kits)
Minimum Order Quantity 1 unit
HS Code Contact via email (reference 8536 or 8537)
Stock Status Order available
Warranty 12 months

5. Model Explanation

Model: MM300-GEHD1CABEXX

Product Description: GE Multilin MM300 series low voltage motor management system, graphical control panel with USB, English interface, high power supply 80-250VDC/60-300VAC, RS485+DeviceNet+Modbus TCP communication, Option 1 (undervoltage autorestart), 4 x 10A Form-A relay outputs + 12 digital inputs (6 AC + 6 DC), 3-phase current and voltage metering, comprehensive motor protection functions, made in Canada

MM300-GEHD1CABEXX Configuration Overview:

  • MM300 = GE Multilin low voltage motor management system product series
  • G = Graphical control panel, with LCD display and USB interface
  • E = English interface
  • H = High power supply: 80~250VDC / 60~300VAC
  • D = Communication: RS485 Modbus RTU + DeviceNet slave + 10/100 Modbus TCP Ethernet
  • 1 = Option 1: Standard starter control + event recorder + undervoltage autorestart
  • C = Slot A: 2 x 10A Form-A relays + 6 x 60~300VAC digital inputs
  • A = Slot B: 3-phase current input + thermal overload/undercurrent/single-phase underpower
  • B = Slot C: 3-phase voltage metering + underpower/undervoltage/overvoltage/phase reversal protection
  • E = Slot D: 2 x 10A Form-A relays + 6 x 20~60VDC digital inputs
  • X = Slot E: None
  • X = Suffix: None

Note: The above configuration is parsed based on GE official MM300 order code manual. Specific configuration and functions are subject to GE official factory configuration sheet; Contact via email for confirmation.

MM300 Series Main Configuration Options (ordered separately, Contact via email):

表格

Configuration Options Description
Control Panel X / B / G No panel / Basic panel no USB / Graphical panel with USB
Power Supply H / L High 80-250VDC/60-300VAC / Low 24-48VDC
Communication C / D / P RS485 Modbus / +DeviceNet+Modbus TCP / +Profibus DP+Modbus TCP
Options S / 1 / 2 / 3 Standard / +Undervoltage restart / +Waveform capture+Data logger / +FlexLogic
I/O Modules A / B / C / D / E / G / X Current / Voltage / AC relay+DI / Form-C relay / DC relay+DI / RTD / None

Official Documentation Reference:

  • GE Multilin MM300 Motor Management System Quick Start Guide (with order code description Chapter 8)
  • GE Multilin MM300 Instruction Manual (198 pages)
  • GE Multilin MM300 Communications Guide
  • GE Multilin MM300 Installation Recommendations
  • GE Vernova Multilin MM300 Product Brochure (Document No. 12854)
  • GE MM2/MM3 to MM300 Retrofit Kits Brochure (Document No. 32002)

6. Why Choose Us

  1. Professional Procurement, Genuine GE Quality Guaranteed — All GE Multilin motor protection relays and automation spare parts obtained through professional procurement channels, ensuring genuine GE original products, with product identification, factory inspection certificates, factory configuration sheets, and technical documentation, 12-month quality warranty. Pre-shipment appearance inspection, model confirmation, configuration verification, power-on test (power indication, display check, communication test, I/O test), insulation resistance test, and packaging check performed.
  2. Worldwide Delivery, Professional Industrial Electronics Logistics — DHL/FedEx/UPS international courier and sea/air freight available, global delivery available. Motor protection relays and other precision industrial electronic devices use shock-proof moisture-proof anti-static professional packaging (anti-static bag + foam cushioning + desiccant + corrugated box), ensuring safe transport. Expedited logistics and customs clearance available, delivery to 200+ countries, meeting urgent project and equipment maintenance needs.
  3. Professional Technical Support, Motor Protection System Full-process Service — Motor protection relay selection consultation (confirming motor power, voltage, current, CT/PT ratios, starting method, load characteristics, protection requirements, communication protocols, I/O point count), installation guidance (DIN rail/panel mounting specifications, CT/VT wiring, power wiring, relay output wiring, communication wiring, grounding requirements), parameter setting (motor nameplate parameter entry, protection setting calculation, thermal model parameter setting, starting control logic configuration, communication parameter setting), system commissioning (protection function test, trip test, starting test, communication integration test, event recorder check), fault analysis (trip cause analysis, fault record interpretation, thermal model assessment, protection false trip/missed trip troubleshooting, communication fault handling, I/O fault diagnosis, spare parts replacement guidance), and motor protection system spare parts list review, helping users correctly select, install, configure, and maintain motor protection systems.
  4. Flexible Procurement, Project Bulk and Spare Parts Framework Agreements — Single unit and bulk project orders, tiered discounts. Complete motor protection system package solutions available (protection relay + CT + PT + control circuit + communication gateway + configuration software + technical service combination) and annual spare parts framework agreements, helping users optimize procurement cost, ensure spare parts supply, minimize equipment downtime risk. Customized quotations and long-term cooperation solutions available for petrochemical, power, metallurgy, mining, water treatment, cement, paper, food and beverage, HVAC, and other industry users.
  5. Pre-shipment Verification, Test Report Available — Appearance, packaging, model, configuration checks before shipment; relay test report available if necessary (appearance inspection, model and silkscreen verification, factory configuration sheet verification, power-on test (power indication, display, keypad operation), communication test (RS485/Ethernet), I/O test (relay outputs, digital inputs), metering accuracy check, protection function verification, insulation resistance test, packaging check, accessory inventory), ensuring delivered product in good condition, parameters qualified, configuration correct. For urgent project needs (motor protection relay fault replacement, plant maintenance, project commissioning, system modification and upgrade), priority inventory coordination and expedited shipping available.

7. Frequently Asked Questions (FAQ)

Q1: What is GE Multilin MM300-GEHD1CABEXX? What are the main parameters and configuration?

A: GE Multilin MM300-GEHD1CABEXX is a Low Voltage Motor Management System from General Electric's Multilin series, integrating motor protection, control, metering, diagnostics, and communication in one device, designed for low voltage three-phase AC motor applications, suitable for NEMA and IEC standard Motor Control Centers (MCC).

Core configuration: Brand GE Multilin (now part of GE Vernova Grid Solutions), model MM300-GEHD1CABEXX, product type low voltage motor protection relay/motor management system, graphical control panel with LCD display and USB, English interface, power supply 80~250VDC/60~300VAC (high type), communication RS485 Modbus RTU + DeviceNet slave + 10/100 Modbus TCP Ethernet, Option 1 (standard starter control + event recorder + undervoltage autorestart), 4 x 10A Form-A relay outputs, 12 digital inputs (6 x 60-300VAC + 6 x 20-60VDC), 3-phase current input, 3-phase voltage input, Slot E empty, configuration software EnerVista MM300, harsh environment coating standard, origin Markham, Ontario, Canada.

Main protection functions: Thermal overload (49, thermal model), phase overcurrent (50P/51P), ground overcurrent (50G/51G), current unbalance/phase loss (46), undercurrent/underpower (37), start inhibit/starts per hour (66), undervoltage (27), overvoltage (59), voltage phase reversal (47), mechanical jam/stall, excessive start time, fuse failure monitoring, thermistor (PTC/NTC).

Main control functions: DOL, star-delta, soft starter control, forward/reverse, two-stage starting, undervoltage autorestart.

Metering functions: 3-phase current, 3-phase voltage, frequency, active/reactive/apparent power, power factor, energy, running time, number of starts.

Main applications: Pump/fan/compressor protection in petrochemical plants, pumps and blowers in water/wastewater treatment, auxiliary motor protection in power industry, conveyors/crushers/ventilation fans in metallurgy and mining, mills/fans/conveyors in cement industry, pumps/fans/mixers in paper industry, process equipment motors in food/pharmaceutical, large fans/pumps in HVAC, motor protection on offshore platforms and ships.

Note: This model is configured with Option 1 (undervoltage autorestart), does not include waveform capture, data logger, and FlexLogic programmable logic (requires Option 2 or 3). Does not include RTD temperature input module (requires optional G module). Protection settings should be calculated and set according to motor nameplate parameters and actual operating conditions, and protection function tests and trip tests should be performed before commissioning. Installation, wiring, and parameter setting must be performed by professional engineers with electrical operation qualifications.

Q2: What is MM300 thermal model protection? How is it different from ordinary overcurrent protection?

A: The MM300's thermal model protection (ANSI 49) is an advanced motor overheating protection algorithm. It not only monitors the magnitude of motor current but also calculates the temperature rise status of motor windings and bearings in real-time based on the motor's thermal capacity mathematical model, simulating the heating and cooling processes inside the motor, thereby more accurately assessing the motor's thermal status.

Ordinary overcurrent protection working principle: Simply monitors whether motor current exceeds the set overcurrent threshold. When current exceeds the threshold, issues alarm or trip after a set delay. Does not consider the motor's previous operating status and thermal accumulation. Potential problems: motor in cold state can withstand large starting current but overcurrent protection may false trip; motor in hot state (after overload operation) may overheat with smaller current but overcurrent protection may fail to act in time.

Thermal model protection working principle: Establishes the motor's thermal capacity mathematical model, simulating motor winding heating (heat generated by current through windings) and cooling (heat dissipated through frame and cooling medium). Real-time calculates the motor's "Used Thermal Capacity" (UTC) in percentage. Considers high current heating during motor starting, overload heating during operation, heat dissipation and cooling processes. Supports thermal accumulation calculation for frequent forward/reverse starts. Supports RTD temperature biasing (if RTD module configured, can correct thermal model based on actual winding temperature). Supports current unbalance biasing (current unbalance causes additional heating, thermal model adds extra thermal accumulation). Issues alarm when thermal capacity reaches alarm threshold (e.g., 85%), trips when reaches trip threshold (e.g., 100% or 115%).

Thermal model protection advantages: 1. More accurate overheating protection based on actual motor thermal status rather than simple current threshold. 2. Fully utilizes motor thermal capacity: allows longer starting current in cold state, reduces unnecessary trips; more sensitive protection in hot state. 3. Considers starting process: motor starting current can reach 5-8 times rated current, thermal model correctly calculates thermal accumulation during starting, avoids false trips during starting. 4. Supports frequent start protection: records thermal accumulation of each start, limits starts per unit time, prevents motor overheating from frequent starts. 5. Thermal status indication: real-time displays thermal capacity usage, operators can understand motor thermal status and arrange starting and operation reasonably. 6. RTD temperature correction: can combine RTD actual temperature measurement to further improve protection accuracy. 7. Unbalance biasing: current unbalance causes negative sequence current additional heating, thermal model considers this factor.

MM300 thermal model related parameters: Motor Full Load Amps (FLA), Service Factor, Thermal Capacity (usually in seconds, representing time motor can withstand 6 times rated current in cold state), Alarm Threshold (typically 85% of thermal capacity), Trip Threshold (typically 100% or 115%), Cooling Time Constant (heat dissipation speed after motor shutdown), RTD Biasing Enable (requires RTD module), Unbalance Biasing Enable.

Note: Thermal model protection parameters must be correctly set according to motor nameplate data and actual operating conditions, especially thermal capacity parameter (obtainable from motor manufacturer or estimated based on experience). Improper parameter setting may lead to protection false trip or missed trip. Thermal model protection function test should be performed before commissioning. MM300-GEHD1CABEXX is configured with 3-phase current input module and supports thermal model protection function.

Q3: Can MM300 replace old MM2 and MM3? What should be noted?

A: Yes, GE provides retrofit kits from old MM2 and MM3 motor relays to MM300, allowing convenient replacement of old MM2/MM3 with MM300 to upgrade protection functions, communication capabilities, and diagnostic levels.

MM300 main advantages over MM2/MM3: 1. More advanced thermal model protection with RTD biasing and unbalance biasing. 2. Richer communication protocols: RS485 Modbus RTU, DeviceNet, Profibus DP, Modbus TCP Ethernet. 3. Graphical control panel with LCD display and USB interface. 4. Higher I/O density and flexibility with modular I/O design. 5. Waveform capture and data logger (Option 2/3). 6. FlexLogic programmable logic (Option 3). 7. Richer protection functions including voltage protection, power protection. 8. Harsh environment coating standard. 9. More compact size.

Retrofit considerations: 1. Dimensions and mounting holes: MM300 and MM2/MM3 may have different dimensions and mounting hole positions, retrofit kits usually include adapter panels or mounting brackets, need to confirm sufficient cabinet space. 2. Terminal arrangement: different terminal arrangements require rewiring or using transition terminals, carefully check wiring diagrams before retrofit. 3. CT and PT specifications: confirm MM300 CT/PT input specifications match existing CT/PT, may need to replace CT/PT if not matching. 4. Power supply voltage: confirm MM300 power supply matches field control power, MM300 has high type (80-250VDC/60-300VAC) and low type (24-48VDC) options. 5. Protection setting conversion: MM2/MM3 protection settings need to be recalculated and set in MM300, as protection algorithms and parameter systems may differ. 6. Communication configuration: if original system used MM2/MM3 communication, need to reconfigure MM300 communication parameters and confirm host system supports MM300 communication protocol and register mapping. 7. Control logic verification: after retrofit, perform complete control logic tests and trip tests to ensure starting, interlock, protection functions are normal. 8. Spare parts inventory: update spare parts list, gradually replace MM2/MM3 spare parts with MM300 spare parts. 9. Retrofit kit model: GE provides retrofit kits for different MM2/MM3 models, need to select correct retrofit kit based on old model, Contact via email for confirmation. 10. Technical service: recommend retrofit and commissioning performed by professional engineers experienced in GE motor protection relay commissioning.

GE Vernova officially published MM2/MM3 to MM300 Retrofit Kits Brochure (Document No. 32002), detailing MM300 replacement models and retrofit kits for various old models. If you need to replace MM2/MM3 with MM300, please provide old model, field configuration, and application requirements; Contact via email, we can assist in confirming replacement model, retrofit solution, and technical services.

Q4: In stock? Lead time? Price?

A: Currently Order Available. Specific stock of GE Multilin motor protection relays fluctuates with market.

  • Lead time: Standard 4-8 weeks (MM300 is GE industrial automation product, some common configurations may be in stock, specific subject to formal quotation).
  • Price: Subject to formal quotation, depends on specific configuration (control panel, power supply, communication, options, I/O module count), quantity, supply channel, whether includes technical service and on-site commissioning support, etc. Bulk procurement enjoys tiered discounts.
  • Package solutions: Complete motor protection system package solutions available (protection relay + CT + PT + control circuit + communication gateway + configuration software + technical service combination), combined procurement price more favorable. If the project requires CT, PT, and technical services, it is recommended to purchase at the same time.
  • Expedited service: For urgent needs (motor protection relay fault replacement, plant maintenance, project commissioning, system modification and upgrade), we can try to coordinate stock or expedited ordering, please contact sales team.
  • Please indicate: required quantity, desired delivery time and destination, motor parameters (power, voltage, current), CT/PT ratios, starting method, protection requirements, communication protocol requirements, I/O point count requirements, whether matching CT/PT and technical services needed, whether installation commissioning and on-site support needed when inquiring; we will coordinate fastest delivery and optimal price.
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