M2012SS1W30 Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The M2012SS1W30 is a toggle switch with SPDT (Single Pole Double Throw) configuration manufactured by NKK Switches. This through-hole, right-angle mounted switch is rated for 6A AC at 125V and 4A DC at 30V. The product is currently obsolete, making identification of equivalent substitute parts essential for design continuity and component sourcing in applications requiring SPDT toggle switch functionality with comparable electrical and mechanical specifications.

Key Parameters

Parameter	M2012SS1W30
Manufacturer	NKK Switches
Circuit Configuration	SPDT
Switch Function	On-On
Current Rating (AC)	6A
Current Rating (DC)	4A
Voltage Rating (AC)	125V
Voltage Rating (DC)	30V
Mounting Type	Through Hole, Right Angle
Actuator Type	Standard Round
Actuator Length	10.50mm
Termination Style	PC Pin
Panel Cutout Dimensions	Circular - 6.50mm Dia
Bushing Thread	1/4-40
Operating Temperature Range	-30°C ~ 85°C
Electrical Life	25,000 Cycles
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the M2012SS1W30 are identified based on the following critical parameters that determine functional and mechanical compatibility:

Primary Substitution Criteria:

Circuit configuration: SPDT
Switch function: On-On
Voltage rating (AC): 125V minimum
Voltage rating (DC): 28V or higher
Current rating: 5A or higher (AC/DC)
Actuator type: Standard Round
Bushing thread: 1/4-40
Termination style: PC Pin
Operating temperature range: -30°C minimum to 85°C maximum

The three identified substitute parts meet these core electrical and mechanical parameters. Variations in mounting type (panel mount versus through hole), actuator length (10.41mm versus 10.50mm), panel cutout dimensions, and electrical life do not preclude substitution when the primary criteria are satisfied.

Parameter Comparison

Parameter	M2012SS1W30 (NKK)	34ASP11B1M6QT (Grayhill)	A123S1YAG (Electroswitch)	A123S1YAQ (Electroswitch)
Circuit Configuration	SPDT	SPDT	SPDT	SPDT
Switch Function	On-On	On-On	On-On	On-On
Current Rating (AC)	6A	5A	6A	6A
Current Rating (DC)	4A	5A	6A	6A
Voltage Rating (AC)	125V	125V	125V	125V
Voltage Rating (DC)	30V	28V	28V	28V
Actuator Type	Standard Round	Standard Round	Standard Round	Standard Round
Actuator Length	10.50mm	10.41mm	10.41mm	10.41mm
Termination Style	PC Pin	PC Pin	PC Pin	PC Pin
Bushing Thread	1/4-40	1/4-40	1/4-40	1/4-40
Operating Temperature Range	-30°C ~ 85°C	-30°C ~ 85°C	-30°C ~ 90°C	-30°C ~ 90°C
Electrical Life	25,000 Cycles	40,000 Cycles	60,000 Cycles	60,000 Cycles
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant
Product Status	Obsolete	Active	Active	Active

Engineering Selection Recommendations

34ASP11B1M6QT (Grayhill Inc.): This substitute is active in production and ROHS3 compliant. It meets all primary substitution criteria with 5A AC/DC current rating and 125V AC / 28V DC voltage ratings. The panel mount configuration differs from the original through-hole design; however, electrical and mechanical interface parameters remain compatible. Electrical life of 40,000 cycles exceeds the original specification.

A123S1YAG (Electroswitch): This substitute is active in production and RoHS compliant. It provides 6A AC/DC current rating and 125V AC / 28V DC voltage ratings, matching or exceeding the original electrical specifications. Operating temperature range extends to 90°C. Electrical life of 60,000 cycles significantly exceeds the original. Panel mount configuration differs from through-hole mounting.

A123S1YAQ (Electroswitch): This substitute is active in production and RoHS compliant. Specifications are identical to A123S1YAG, providing 6A AC/DC current rating, 125V AC / 28V DC voltage ratings, -30°C to 90°C operating range, and 60,000 cycle electrical life. Panel mount configuration differs from through-hole mounting.

All three substitutes are currently in active production status, ensuring long-term component availability compared to the obsolete M2012SS1W30.

Frequently Asked Questions (FAQ)

Q: Can the 34ASP11B1M6QT substitute for the M2012SS1W30 despite the lower AC current rating of 5A versus 6A?

A: The 34ASP11B1M6QT is a valid substitute when the application current requirement does not exceed 5A AC. If the design requires 6A AC operation, the Electroswitch A123S1YAG or A123S1YAQ are required.

Q: What is the impact of the panel mount versus through-hole mounting difference?

A: The mounting type difference affects PCB layout and mechanical integration. Through-hole mounting uses PC pins inserted into PCB holes; panel mount uses a bushing threaded into a panel cutout. Both configurations use identical 1/4-40 bushing threads and 6.35mm to 6.50mm circular panel cutout dimensions, allowing mechanical compatibility in applications where panel mounting is acceptable.

Q: Are the Electroswitch A123S1YAG and A123S1YAQ interchangeable?

A: Yes. Both parts are identical in all electrical and mechanical specifications, including current ratings, voltage ratings, operating temperature range, electrical life, and termination style.

Q: Does the extended electrical life of substitute parts affect compatibility?

A: No. Extended electrical life (40,000 or 60,000 cycles versus 25,000 cycles) represents an improvement and does not impact functional compatibility. The substitute parts will perform the same switching function with greater durability.

Q: What compliance differences exist between the substitutes?

A: The M2012SS1W30 is ROHS3 compliant. The 34ASP11B1M6QT is also ROHS3 compliant. The Electroswitch parts (A123S1YAG and A123S1YAQ) are RoHS compliant. All parts meet REACH unaffected or vendor undefined status and carry EAR99 ECCN classification.

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