IDEC ASW322 Selector Switch TW Series φ22mm Non-Illuminated

Japanese IDEC ASW322 non-illuminated selector switch, part of the TW series φ22mm NEMA style control devices, 3-position operation, spring return from left, knob operator, 2NO-2NC (DPDT) contact configuration, slow-make double-break silver contacts, rated thermal current 10A, maximum voltage 600VAC, DC 8A/220V, operating angle 45°, M3.5 screw terminals, corrosion-resistant octagonal chrome-plated locking bezel, NEMA Type 4X and IP65 watertight/oiltight panel protection, mechanical life over 500,

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Product Details

I. Product Overview

The IDEC ASW322 is a non-illuminated selector switch manufactured by Japanese IDEC Corporation, part of the TW series φ22mm NEMA style control devices, with a mounting hole size of φ22mm. This sele ctor switch features 3-position operation, spring return from left, equipped with a knob operator, 2NO-2NC (DPDT) contact configuration, widely used in control circuits of industrial control panels, control cabinets and machinery for circuit switching, mode selection and function switching.

The TW series is IDEC's classic φ22mm control device series, featuring an integrated Heavy Type design emphasizing environmental resistance, equipped with a corrosion-resistant octagonal chrome-plated locking bezel, with a robust and durable appearance. The contacts adopt a slow-make, double-break structure with silver contact material, providing reliable contact and strong breaking capacity. The contact mechanism supports a wide current rating from 5mA to 10A, reducing the need for various contact materials. The panel protection rating reaches NEMA Type 4X and IP65, with excellent water, oil and dust resistance, suitable for harsh industrial environments such as humidity, dust and oil.

The ASW322 selector switch features 3-position operation (left-center-right), with spring return from left design, meaning when the knob is rotated from the center position to the left and released, it automatically spring-returns to the center position; rotating to the right maintains that position (manual return required). The operator is a standard knob type with a 45° operating angle, providing clear feel and distinct positions. The contact configuration is 2NO-2NC (DPDT, Double Pole Double Throw), capable of simultaneously controlling the on/off switching of two independent circuits. The terminal type is M3.5 screw terminals, providing secure and reliable wiring. The product features a modular design with snap-on contact units that can be replaced or expanded according to requirements. This selector switch has passed multiple international certifications such as UL, c-UL, CSA, TUV and CE, complying with NEMA ICS 5 and IEC 60947-5-1 standards, serving as a reliable choice in the industrial control field.

II. Specifications

表格

Parameter	Value
Brand	IDEC (Japan)
Series	TW Series (φ22mm NEMA Style)
Model	ASW322
Product Type	Non-Illuminated Selector Switch
Mounting Hole Size	φ22 mm
Number of Positions	3 (left-center-right)
Operation Method	Spring Return from Left
Operator Shape	Standard Knob
Operating Angle	45°
Contact Configuration	2NO-2NC (DPDT, Double Pole Double Throw)
Contact Type	Slow Make, Double Break
Contact Material	Silver
Rated Thermal Current	10 A
Maximum Operating Voltage (AC)	600 V
Maximum Operating Current (DC)	8 A
Maximum Operating Voltage (DC)	220 V
Minimum Switching Current	5 mA
Bezel Type	Octagonal chrome-plated locking bezel
Terminal Type	M3.5 screw terminal
Panel Protection	NEMA Type 4X, IP65 (watertight/oiltight)
Overall Protection	Contact via email for confirmation
Mechanical Life	Over 500,000 operations (selector switches)
Electrical Life	Over 100,000 operations (at rated load)
Contact Resistance	Max. 50 mΩ (initial value)
Insulation Resistance	Min. 100 MΩ (500V DC megger)
Dielectric Strength	Between live and dead metal parts: 2000V AC, 1 minute
Impulse Withstand Voltage	4.0 kV
Overvoltage Category	II
Operating Temperature	-25 to +50 °C (no freezing)
Storage Temperature	-40 to +80 °C (no freezing)
Operating Humidity	30 to 85% RH (no condensation)
Mounting	Panel mounting (rear locknut fixing)
Approvals	UL, c-UL, CSA, TUV, CE
Applicable Standards	NEMA ICS 5, IEC 60947-5-1, etc.
Weight	Contact via email for confirmation
Country of Origin	Japan/China (contact via email for confirmation)

III. Product Features

Japanese IDEC quality, TW series classic φ22mm non-illuminated selector switch, reliable performance
NEMA style heavy-duty design, corrosion-resistant octagonal chrome-plated locking bezel, robust and durable appearance
3-position operation, spring return from left, knob operator, 45° operating angle, clear feel
2NO-2NC (DPDT) contact configuration, capable of simultaneously controlling two independent circuits
Slow-make, double-break silver contact structure, reliable contact, strong breaking capacity
Wide current rating 5mA~10A, adapting to various circuits from signal level to power level
Rated thermal current 10A, maximum voltage 600VAC, DC 8A/220V
NEMA Type 4X and IP65 panel protection, water, oil and dust resistant
M3.5 screw terminals, secure and reliable wiring, suitable for industrial field wiring
Mechanical life over 500,000 operations, electrical life over 100,000 operations, durable
Low contact resistance (max. 50mΩ), excellent insulation performance (min. 100MΩ)
Dielectric strength 2000V AC, impulse withstand voltage 4.0kV, high safety performance
Operating temperature -25~+50°C, wide temperature adaptation
Modular snap-on contact units, replaceable or expandable, flexible configuration
Multiple international certifications such as UL, c-UL, CSA, TUV, CE
Widely used in automation equipment, machine tools, power, chemical and other industries

IV. Typical Applications

Circuit switching in industrial control panels and control cabinets
Operating mode selection for machinery (manual/automatic/remote)
Motor forward/reverse/start-stop control and multi-speed switching
Station selection and control in automated production lines
Function switching and operating mode selection for machine tools
Control circuit switching and power selection in power systems
Process parameter selection and control in chemical plants
Operating mode selection for water treatment equipment
Control switching in HVAC systems
Control circuits in marine and rail transit equipment

V. Model Description

ASW322 is the complete model number for the IDEC TW series non-illuminated selector switch. Where:

A: TW series control device prefix
S: Selector Switch
W: TW series (Heavy Type, NEMA style)
3: 3-Position operation
2: Spring Return from Left
2: Contact configuration code (corresponding to 2NO-2NC/DPDT configuration)

The IDEC TW series selector switches offer rich configuration options, with the model coding rules as follows:

Number of positions: 2=2-position, 3=3-position, 4=4-position, 5=5-position
Spring return action: Blank=Maintained, 1=Spring return from Right, 2=Spring return from Left
Contact configuration: 10=1NO, 01=1NC, 20=2NO, 02=2NC, 11=1NO-1NC, 22=2NO-2NC, 40=4NO, etc.
Operator style: Blank=Standard knob, L=Lever operator, K=Key operator
Terminal type: Blank=Standard screw terminal, N=Fingersafe terminal

The ASW322 is an assembled selector switch with 3-position, spring return from left, 2NO-2NC contacts, standard knob, M3.5 screw terminals. To confirm the detailed configuration of this model or other configuration options, please contact via email for confirmation. We will provide detailed technical documentation and selection support.

VI. Why Choose Us

Professional channel supply, comprehensive model coverage across multiple brands of industrial spare parts
Strict quality inspection process ensuring reliable product quality
Professional engineering team providing technical support and selection consultation
Quick response, efficient logistics, orders accepted
Quality assurance, worry-free after-sales service

VII. FAQ

Q1: What does "spring return from left" mean for ASW322?

A: Spring return from left refers to the operating characteristic of the selector switch: when the knob is rotated from the center position to the left position and released, it automatically returns to the center position under internal spring force; while rotating to the right position maintains that position, requiring manual rotation to return to center. This operating method is commonly used in applications requiring momentary triggering of the left position function (such as jog, reset) while maintaining the right position function (such as run, start).

Q2: What does 2NO-2NC (DPDT) contact mean?

A: 2NO-2NC indicates that this selector switch has 2 independent contact groups, each containing one normally open (NO) contact and one normally closed (NC) contact. DPDT (Double Pole Double Throw) is an equivalent expression, indicating 2 independent switching circuits, each capable of switching between two states. When the selector switch is in different positions, the on/off states of each NO/NC contact group change accordingly, enabling simultaneous control of two independent circuits.

Q3: Can the contacts of this selector switch be replaced or expanded?

A: The TW series features a modular design, with contact units as independent snap-on components that can be replaced according to requirements. However, as an assembled selector switch, the ASW322 is factory-configured with 2NO-2NC contact units. For expanding to more contacts (such as 4NO, 4NO-4NC, etc.), it is recommended to select the corresponding model or consult IDEC technical support. Contact unit replacement should be performed by professional personnel to ensure correct installation and reliable contact.

Q4: Can you provide detailed configuration and selection support for this model?

A: Yes. Please contact via email with your application requirements, including number of positions, operation method (maintained/spring return), contact configuration, operator style (knob/lever/key), terminal type, panel thickness, certification requirements, etc. We will provide corresponding detailed configuration analysis, selection recommendations, mounting dimension drawings and technical support.

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