Honeywell 11SM401 Snap Action Switch SPDT Equivalent & Substitute Parts

Part Overview

The Honeywell 11SM401 is an active-status snap action switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 5A at 250V AC and 30V DC. This chassis-mount switch features a round pin plunger actuator with solder lug termination and is designed for on-momentary switching applications. The part is RoHS compliant and maintains mechanical reliability across -55°C to 125°C operating temperature range with 10,000,000 cycle mechanical life rating.

Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits operation within alternative electrical and mechanical parameter ranges while maintaining circuit functionality and safety requirements.

Substiute Parts

11SM401

Honeywell Sensing and Productivity SolutionsIn Stock: 76611SM401 Datasheet

Current PartRFQ

MS0850500F060S1A

E-SwitchIn Stock: 1035MS0850500F060S1A Datasheet

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MS0850500F080S1A

E-SwitchIn Stock: 1289MS0850500F080S1A Datasheet

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MS0850500F250S1A

E-SwitchIn Stock: 1435MS0850500F250S1A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Honeywell 11SM401 is determined by strict alignment with the following critical parameters:

Mandatory Matching Parameters:

• Circuit configuration: SPDT
• Switch function: On-Mom
• Current rating: 5A minimum
• Actuator type: Round pin plunger
• Mounting type: Chassis mount
• Termination style: Solder lug

Allowable Parameter Variations:

• AC voltage rating: Substitute parts rated for 125V AC are acceptable for applications operating at or below 125V AC. The 11SM401 rated for 250V AC provides higher voltage margin; substitutes at 125V AC operate within reduced but specified voltage envelope.
• Operating force: Substitute parts with different operating force values (60gf, 80gf, 250gf) are acceptable when application actuation requirements permit the specified force range.
• Mechanical life: Substitute parts with lower mechanical life ratings (1,000,000 cycles versus 10,000,000 cycles) are acceptable for applications with lower cycle count requirements.
• Operating temperature range: Substitute parts with narrower temperature ranges (-25°C to 85°C versus -55°C to 125°C) are acceptable for applications within the substitute part's specified range.

The three E-Switch MS series parts (MS0850500F060S1A, MS0850500F080S1A, MS0850500F250S1A) meet all mandatory matching criteria and differ only in operating force specification.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection - Honeywell 11SM401: Select the Honeywell 11SM401 for applications requiring the full specified operating temperature range (-55°C to 125°C), maximum mechanical life (10,000,000 cycles), and 250V AC voltage rating. This part is active-status with RoHS compliance and provides the broadest operational envelope.

Substitute Selection - E-Switch MS0850500F060S1A: The MS0850500F060S1A is suitable for applications operating within -25°C to 85°C temperature range, with AC voltage requirements at or below 125V, and mechanical cycle requirements up to 1,000,000 cycles. The 60gf operating force is the lowest among substitute options. This part is active-status with ROHS3 compliance and REACH unaffected status.

Substitute Selection - E-Switch MS0850500F080S1A: The MS0850500F080S1A is suitable for applications operating within -25°C to 85°C temperature range, with AC voltage requirements at or below 125V, and mechanical cycle requirements up to 1,000,000 cycles. The 80gf operating force provides mid-range actuation force. This part is active-status with ROHS3 compliance and REACH unaffected status.

Substitute Selection - E-Switch MS0850500F250S1A: The MS0850500F250S1A is suitable for applications operating within -25°C to 85°C temperature range, with AC voltage requirements at or below 125V, and mechanical cycle requirements up to 1,000,000 cycles. The 250gf operating force is the highest among all options and requires greater actuation effort. This part is active-status with ROHS3 compliance and REACH unaffected status.

All substitute parts maintain SPDT circuit configuration, 5A current rating, on-momentary switch function, round pin plunger actuator, chassis mount configuration, and solder lug termination identical to the primary part.

Frequently Asked Questions (FAQ)

Q: Can the E-Switch MS series parts replace the Honeywell 11SM401 in all applications?

A: No. E-Switch MS series substitutes are limited to applications operating at 125V AC or lower and within -25°C to 85°C temperature range. Applications requiring 250V AC operation or extended temperature range (-55°C to 125°C) must use the Honeywell 11SM401. Applications with mechanical cycle requirements exceeding 1,000,000 cycles require the Honeywell part.

Q: What is the difference between the three E-Switch substitute parts?

A: The three E-Switch parts (MS0850500F060S1A, MS0850500F080S1A, MS0850500F250S1A) differ only in operating force and release force specifications. The F060 variant requires 60gf operating force, the F080 variant requires 80gf, and the F250 variant requires 250gf. All other electrical and mechanical parameters are identical. Selection depends on application actuation force requirements.

Q: Are the operating position differences significant?

A: The operating position difference is minimal (0.330" for 11SM401 versus 0.335" for MS series, a 0.005" or 0.13mm difference). This difference is within typical mechanical tolerance and does not affect functional compatibility in standard chassis mount applications.

Q: What compliance certifications apply to each part?

A: The Honeywell 11SM401 is RoHS Compliant. All three E-Switch MS series parts are ROHS3 Compliant and REACH Unaffected. Both RoHS and ROHS3 compliance are acceptable for most applications; verify specific regulatory requirements for your end application.

Q: Can I use an E-Switch part in a -55°C application?

A: No. E-Switch MS series parts are rated only to -25°C minimum. Applications requiring operation below -25°C must use the Honeywell 11SM401, which is rated to -55°C.

Q: What is the inventory status for each part?

A: Honeywell 11SM401: 688 pcs in stock. MS0850500F060S1A: 997 pcs in stock. MS0850500F080S1A: 1250 pcs in stock. MS0850500F250S1A: 1404 pcs in stock. All parts are new original stock.