C&K 7401SYZQES2 Toggle Switch 4PDT 5A 120V Equivalent & Substitute Parts

Part Overview

The C&K 7401SYZQES2 is a 4PDT toggle switch rated for 5A at 120V AC with panel mount configuration and solder lug termination. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations. The switch features a satin chrome actuator, standard round design with 10.67mm actuator length, and operates across -30°C to 85°C temperature range with 100,000 electrical cycles rated life.

Substiute Parts

7401SYZQES2

C&KIn Stock: 12487401SYZQES2 Datasheet

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7401SYZQE

C&KIn Stock: 11047401SYZQE Datasheet

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1004P1T1B1M1QEH

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1004P1T1B1M1RE

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A423P31YZQ

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A423P32YZQ

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A423S1CWZG-M8

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7401SYZQES2 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

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

Electrical Performance Criteria:

• Current rating: 5A minimum (AC/DC)
• Voltage rating - AC: 120V minimum
• Voltage rating - DC: 28V minimum

Environmental Criteria:

• Operating temperature range: -30°C to 85°C minimum
• RoHS3 compliance required

Substitute parts are grouped into two categories based on electrical performance alignment:

Category 1 - Full Electrical Equivalents (5A/120V): Parts meeting or exceeding the 5A at 120V specification with identical mechanical interfaces.

Category 2 - Electrical Derating Substitutes: Parts with reduced current or voltage ratings that maintain 4PDT configuration and mechanical compatibility but require application-level current/voltage verification.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Highest Compatibility):

The C&K 7401SYZQE is the primary direct replacement for the obsolete 7401SYZQES2. Both parts share identical electrical ratings (5A/120V AC, 28V DC), mechanical interface specifications, and operating temperature range. The 7401SYZQE maintains the same 100,000 cycle electrical life and is ROHS3 compliant. Product status is active, ensuring long-term availability.

Alternative Substitutes with Full Electrical Equivalence:

The E-Switch 1004P1T1B1M1QEH provides 5A/120V AC electrical equivalence with identical mechanical mounting (6.35mm circular cutout, 1/4-40 bushing thread). Actuator length is 10.41mm versus 10.67mm on the original part. Electrical life is reduced to 40,000 cycles. ROHS3 compliance is maintained. This part is suitable where the reduced cycle life does not impact application requirements.

The Electroswitch A423P41YZQ, A423P31YZQ, A423P32YZQ, and A423S1CWZG-M8 provide electrical performance exceeding the original specification at 6A/125V AC. These parts are RoHS compliant and active in production. Mechanical interface compatibility requires verification due to unspecified panel cutout dimensions in manufacturer data. The A423S1CWZG-M8 includes splash proof ingress protection, providing enhanced environmental protection.

Derating Substitutes (Reduced Electrical Performance):

The E-Switch 1004P1T1B1M1RE is a 4PDT on-on switch with reduced electrical ratings (0.4VA/20V AC and DC). This part maintains mechanical compatibility but operates at significantly lower voltage and current levels. Selection of this part requires confirmation that application electrical requirements do not exceed 0.4VA at 20V.

Compliance and Availability:

All substitute parts maintain RoHS compliance. The C&K 7401SYZQE and E-Switch 1004P1T1B1M1QEH carry ROHS3 designation matching the original part. Electroswitch parts carry RoHS compliance. All substitute parts are currently active in production, ensuring supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the C&K 7401SYZQE directly replace the 7401SYZQES2?

A: Yes. The 7401SYZQE is a direct replacement with identical electrical ratings (5A/120V AC, 28V DC), mechanical interface (6.35mm circular cutout, 1/4-40 bushing thread), operating temperature range (-30°C to 85°C), and electrical life (100,000 cycles). Both are ROHS3 compliant. The primary difference is product status: the original is obsolete while the replacement is active.

Q: What is the difference between the C&K 7401SYZQES2 and 7401SYZQE?

A: The electrical and mechanical specifications are identical. The 7401SYZQES2 features a satin chrome actuator, while the 7401SYZQE features epoxy sealed terminals. Both are 4PDT on-on switches with 5A/120V AC ratings and panel mount configuration. The key difference is availability: 7401SYZQES2 is obsolete, making 7401SYZQE the active production equivalent.

Q: Are the Electroswitch A423 series parts compatible with the 7401SYZQES2?

A: The Electroswitch A423 series parts (A423P31YZQ, A423P32YZQ, A423P33YZG, A423P41YZQ, A423S1CWZG-M8) share the same 4PDT on-on circuit configuration, 1/4-40 bushing thread, and solder lug termination. However, panel cutout dimensions are not specified in manufacturer data for these parts. Electrical performance exceeds the original at 6A/125V AC. Mechanical compatibility must be verified before selection, particularly regarding panel cutout alignment and actuator length variations.

Q: What is the impact of reduced electrical life in substitute parts?

A: The original 7401SYZQES2 is rated for 100,000 electrical cycles. The E-Switch 1004P1T1B1M1QEH and Electroswitch A423 series parts are rated for 40,000 and 60,000 cycles respectively. Selection of parts with reduced cycle life is appropriate for applications with lower switching frequency or shorter operational life requirements. High-frequency switching applications should prioritize parts with higher cycle ratings.

Q: Can the E-Switch 1004P1T1B1M1RE be used as a substitute?

A: The 1004P1T1B1M1RE maintains 4PDT on-on configuration and mechanical compatibility (6.35mm circular cutout, 1/4-40 bushing thread). However, electrical ratings are significantly reduced to 0.4VA at 20V AC/DC compared to the original 5A at 120V AC. This part is suitable only for low-voltage, low-current applications. Verification that application requirements do not exceed 0.4VA at 20V is mandatory before selection.

Q: What does ROHS3 compliance mean for these parts?

A: ROHS3 compliance indicates conformance to the Restriction of Hazardous Substances Directive 2011/65/EU as amended by Directive (EU) 2015/863. This certification restricts the use of specific hazardous substances including lead, cadmium, mercury, hexavalent chromium, and certain brominated flame retardants. All substitute parts listed maintain RoHS compliance, with C&K and E-Switch parts specifically designated as ROHS3 compliant.

Q: How do actuator length variations affect compatibility?

A: The original 7401SYZQES2 has a 10.67mm standard round actuator. Substitute parts vary: E-Switch parts feature 10.41mm actuators, Electroswitch flatted actuators range from 6.35mm to 11.38mm. Actuator length affects panel depth requirements and operator ergonomics. Shorter actuators (6.35mm) require less panel penetration depth, while longer actuators (11.38mm) extend further from the panel surface. Selection should account for available panel depth and user interface requirements.

Q: What is the difference between standard round and flatted actuators?

A: Standard round actuators provide 360-degree toggle operation with symmetrical engagement. Flatted actuators feature a flattened profile that restricts toggle direction to a specific plane, providing directional indication. The original 7401SYZQES2 uses a standard round actuator. Electroswitch A423 series parts with flatted actuators provide directional feedback but may require different panel cutout geometry.