C&K 7401SYCME Toggle Switch 4PDT 5A 120V Equivalent & Substitute Parts

Part Overview

The C&K 7401SYCME is a 4PDT toggle switch rated for 5A at 120V AC with panel mount configuration and PC pin termination. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations. The switch features epoxy sealed terminals, brass chrome-plated actuator, and operates across -30°C to 85°C temperature range with 100,000 electrical cycles rated life.

Key Parameters

Parameter	Value
Manufacturer	C&K
Part Number	7401SYCME
Circuit Configuration	4PDT (Four Pole Double Throw)
Switch Function	On-On
Current Rating	5A AC/DC
Voltage Rating AC	120V
Voltage Rating DC	28V
Mounting Type	Panel Mount
Termination Style	PC Pin
Panel Cutout	Circular - 6.35mm Dia
Bushing Thread	1/4-40
Actuator Type	Standard Round
Actuator Length	10.67mm
Operating Temperature	-30°C to 85°C
Electrical Life	100,000 Cycles
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following core parameters:

Primary Compatibility Criteria:

Circuit configuration: 4PDT
Switch function: On-On
Mounting type: Panel Mount
Termination style: PC Pin
Panel cutout dimensions: Circular 6.35mm Dia
Bushing thread: 1/4-40

Electrical Compatibility Criteria:

Current rating: Minimum 5A AC/DC
Voltage rating AC: Minimum 120V
Voltage rating DC: Minimum 28V
Operating temperature range: Must encompass -30°C to 85°C

Substitute parts are grouped into two categories: direct equivalents from the same manufacturer (C&K 7401SYCSE) and cross-manufacturer alternatives that meet all mechanical and electrical parameters. Parts with reduced electrical ratings (0.4VA at 20V) or different actuator specifications are listed for reference but require application-level verification before deployment.

Parameter Comparison

Parameter	7401SYCME (Main)	7401SYCSE	1004P1T6B11M2QE	1004P1T6B11M2QEH	34A4P11B1M2GT	34A4P11B1M2QT	34A4P11B6M2GT	A423S1YCQ
Manufacturer	C&K	C&K	E-Switch	E-Switch	Grayhill Inc.	Grayhill Inc.	Grayhill Inc.	Electroswitch
Circuit	4PDT	4PDT	4PDT	4PDT	4PDT	4PDT	4PDT	4PDT
Switch Function	On-On	On-On	On-On	On-On	On-On	On-On	On-On	On-On
Current Rating	5A AC/DC	5A AC/DC	5A AC/DC	5A AC/DC	5A AC/DC	5A AC/DC	5A AC/DC	6A AC/DC
Voltage AC	120V	120V	120V	120V	125V	125V	125V	125V
Voltage DC	28V	28V	28V	28V	28V	28V	28V	28V
Mounting Type	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount
Termination	PC Pin	PC Pin	PC Pin	PC Pin	PC Pin	PC Pin	PC Pin	PC Pin
Panel Cutout	Circular 6.35mm	Circular 6.35mm	Circular 6.35mm	Circular 6.35mm	Circular 6.35mm	Circular 6.35mm	Circular 6.35mm	Not Specified
Bushing Thread	1/4-40	1/4-40	1/4-40	1/4-40	1/4-40	1/4-40	1/4-40	1/4-40
Actuator Type	Standard Round	Standard Round	Flat Anti-Rotation	Flat Anti-Rotation	Standard Round	Standard Round	Standard Round	Standard Round
Actuator Length	10.67mm	10.67mm	12.30mm	12.30mm	10.41mm	10.41mm	9.90mm	10.41mm
Operating Temp	-30°C to 85°C	-30°C to 85°C	-30°C to 85°C	-30°C to 85°C	-30°C to 85°C	-30°C to 85°C	-30°C to 85°C	-30°C to 90°C
Electrical Life	100,000 Cycles	100,000 Cycles	40,000 Cycles	40,000 Cycles	40,000 Cycles	40,000 Cycles	40,000 Cycles	60,000 Cycles
RoHS Status	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	RoHS Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Equivalent (Recommended Primary Choice): C&K 7401SYCSE is the direct successor to 7401SYCME from the same manufacturer and series. It maintains identical electrical ratings (5A at 120V AC, 28V DC), mechanical configuration, and operating temperature range. The part is currently in active production status. RoHS compliance is maintained, though REACH status differs (REACH Affected vs. REACH Unaffected). This part provides the highest compatibility assurance for direct replacement applications.

Cross-Manufacturer Alternatives (Electrical Equivalents): E-Switch 1004P1T6B11M2QE and 1004P1T6B11M2QEH meet all primary electrical and mechanical compatibility criteria with identical current and voltage ratings. Both are active production parts with ROHS3 compliance. The primary difference is actuator type (Flat Anti-Rotation vs. Standard Round) and actuator length (12.30mm vs. 10.67mm), which may affect panel mounting clearance. Electrical life is reduced to 40,000 cycles compared to the original 100,000 cycles.

Grayhill Inc. 34A4P11B1M2GT and 34A4P11B6M2GT provide electrical equivalence with 5A at 125V AC rating (exceeding the 120V requirement). Both feature standard round actuators with slightly different lengths (10.41mm and 9.90mm respectively). Electrical life is 40,000 cycles. These parts are active production with ROHS3 compliance.

Electroswitch A423S1YCQ exceeds electrical requirements with 6A current rating at 125V AC. Operating temperature extends to 90°C. Electrical life is 60,000 cycles. Panel cutout dimensions are not specified in available data. RoHS compliance is confirmed; REACH status is vendor undefined.

Parts Not Recommended for Direct Substitution: Grayhill Inc. 34A4P11B1M2RT and 34A4P11B3M2RT have significantly reduced electrical ratings (0.4VA at 20V) and do not meet the 5A at 120V requirement of the original part. These are listed for reference only and require application-level engineering review before consideration.

Frequently Asked Questions (FAQ)

Q: Can I use E-Switch 1004P1T6B11M2QE as a direct replacement for 7401SYCME? A: Yes, from an electrical and mechanical standpoint. The part meets all core compatibility criteria: 4PDT configuration, 5A at 120V AC rating, panel mount with PC pin termination, and identical panel cutout and bushing specifications. The actuator type differs (Flat Anti-Rotation vs. Standard Round) and length is slightly longer (12.30mm vs. 10.67mm), which may affect panel clearance in space-constrained applications. Electrical life is reduced from 100,000 to 40,000 cycles.

Q: What is the difference between 7401SYCSE and 7401SYCME? A: 7401SYCSE is the active production equivalent of the obsolete 7401SYCME. Both are C&K 7000 series parts with identical electrical ratings, mechanical configuration, and operating specifications. The primary difference is product status: 7401SYCME is obsolete while 7401SYCSE is currently manufactured. REACH compliance status differs between the two parts.

Q: Why do some substitute parts have higher voltage ratings (125V vs. 120V)? A: Higher voltage ratings indicate the part can safely operate at or above the original specification. A 125V rated switch exceeds the 120V requirement and is electrically compatible. This provides additional design margin and is acceptable for direct substitution.

Q: Does the difference in actuator length affect compatibility? A: Actuator length differences may affect panel mounting clearance and operator ergonomics. The original 7401SYCME has a 10.67mm actuator. E-Switch alternatives have 12.30mm actuators (longer), while Grayhill alternatives range from 9.90mm to 10.41mm. Verify panel cutout depth and surrounding component clearance before final selection.

Q: What does "electrical life" mean and why does it vary? A: Electrical life is the rated number of on-off cycles the switch can perform while maintaining specified electrical performance. The original 7401SYCME is rated for 100,000 cycles. Most cross-manufacturer alternatives are rated for 40,000 to 60,000 cycles. Select based on application duty cycle requirements.

Q: Are all substitute parts RoHS compliant? A: All listed substitute parts carry RoHS compliance certification (either RoHS or ROHS3). The original 7401SYCME is ROHS3 compliant. Verify specific RoHS version requirements for your application, as some parts are listed as RoHS Compliant without the "3" designation.

Q: Can I use Grayhill 34A4P11B1M2RT as a substitute? A: No. This part has a 0.4VA rating at 20V, which does not meet the 5A at 120V requirement of the original application. It is electrically incompatible and listed for reference only.

Q: What packaging options are available? A: The original 7401SYCME packaging is not specified in available data. Direct equivalent 7401SYCSE is available in unspecified packaging. E-Switch alternatives (1004P1T6B11M2QE and 1004P1T6B11M2QEH) are available in bulk packaging. Grayhill parts are available in bulk or unspecified packaging. Electroswitch A423S1YCQ is available in bulk packaging. Confirm packaging requirements with your procurement process.

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