Honeywell 41SM301 Snap Action Switch - Equivalent & Substitute Parts

Part Overview

The Honeywell 41SM301 is a snap action switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 11A at 250V AC and 5A at 30V DC. This component features a round pin plunger actuator and chassis mount termination with solder lugs. The 41SM301 is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations. The part is RoHS compliant and rated for operation across -55°C to 125°C with 80,000 mechanical cycles.

Substiute Parts

41SM301

Honeywell Sensing and Productivity SolutionsIn Stock: 86841SM301 Datasheet

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41SM1

Honeywell Sensing and Productivity SolutionsIn Stock: 93641SM1 Datasheet

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MBZ101A01C01X01

APEM Inc.In Stock: 741MBZ101A01C01X01 Datasheet

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MBZ101A01C02X01

APEM Inc.In Stock: 792MBZ101A01C02X01 Datasheet

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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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MS0850500F295S1A

E-SwitchIn Stock: 732MS0850500F295S1A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the 41SM301 is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:

Critical Matching Parameters:

• Circuit configuration (SPDT required)
• Switch function (On-Mom momentary operation)
• Actuator type (Round pin plunger)
• Mounting type (Chassis mount)
• Termination style (Solder lug)
• Operating position tolerance (0.330" ± acceptable variance)

Electrical Compatibility Criteria:

• AC voltage rating must equal or exceed 250V
• AC current rating must equal or exceed 11A (for direct replacement)
• DC voltage rating must equal or exceed 30V
• DC current rating must equal or exceed 5A (for direct replacement)

Environmental Compatibility:

• Operating temperature range must encompass or match -55°C to 125°C
• RoHS compliance status must be maintained

Substitute parts are grouped into two categories: Direct Equivalents (matching all electrical specifications) and Functional Alternatives (meeting core circuit and mechanical requirements with reduced electrical ratings for lower-power applications).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Preferred for Replacement):

The 41SM1 from Honeywell Sensing and Productivity Solutions is the direct equivalent to the obsolete 41SM301. This part maintains identical electrical ratings (11A @ 250V AC, 5A @ 30V DC), mechanical specifications, operating temperature range (-55°C to 125°C), and mechanical life (80,000 cycles). The 41SM1 is currently in active production status with 920 units in stock, ensuring supply continuity. Both parts share the same series designation (SM) and are RoHS compliant. This substitution requires no circuit redesign or application modification.

Alternative Substitutes (Application-Dependent):

The MBZ101A01C01X01 and MBZ101A01C02X01 from APEM Inc. provide SPDT snap action functionality with chassis mount configuration. These parts are rated for 10A @ 250V AC, which is 1A lower than the 41SM301 specification. The operating temperature range (-40°C to 85°C) is narrower than the original part. However, these APEM switches offer significantly extended mechanical life (10,000,000 cycles versus 80,000 cycles) and ROHS3 compliance. Selection of APEM alternatives is appropriate for applications where the 10A AC rating is sufficient and the reduced temperature range is acceptable.

The MS0850500F060S1A, MS0850500F080S1A, MS0850500F250S1A, and MS0850500F295S1A from E-Switch are functional alternatives with reduced electrical ratings (5A @ 125V AC). These parts are suitable only for low-power applications where the original 11A @ 250V specification is not required. The E-Switch series offers higher mechanical life (1,000,000 cycles) and ROHS3 compliance but operates within a narrower temperature range (-25°C to 85°C). These substitutes differ in operating force (60gf, 80gf, 250gf, and 295gf respectively), allowing selection based on actuation requirements.

Frequently Asked Questions (FAQ)

Q: Can the 41SM1 be used as a direct replacement for the 41SM301?

A: Yes. The 41SM1 is a direct equivalent with identical electrical ratings (11A @ 250V AC, 5A @ 30V DC), mechanical specifications, and operating temperature range. No circuit modification is required. The 41SM1 is currently in active production, addressing the obsolescence of the 41SM301.

Q: What are the key differences between Honeywell 41SM1 and APEM MBZ101A01C01X01?

A: The primary difference is AC current rating: 41SM1 is rated 11A @ 250V, while MBZ101A01C01X01 is rated 10A @ 250V. The APEM part has a narrower operating temperature range (-40°C to 85°C versus -55°C to 125°C) but offers significantly higher mechanical life (10,000,000 cycles versus 80,000 cycles). Selection depends on whether the 1A current reduction and temperature range limitation are acceptable for the application.

Q: Are the E-Switch MS0850500 series parts suitable replacements for the 41SM301?

A: The E-Switch MS0850500 series parts are functional alternatives only for applications with reduced electrical requirements. These parts are rated 5A @ 125V AC, which is substantially lower than the 41SM301 specification of 11A @ 250V AC. They are not suitable for direct replacement in circuits requiring the full 11A @ 250V rating. The E-Switch series is appropriate for low-power applications where the reduced electrical rating is acceptable.

Q: What is the significance of operating force differences among E-Switch alternatives?

A: The E-Switch MS0850500 series offers four variants with different operating forces: 60gf (MS0850500F060S1A), 80gf (MS0850500F080S1A), 250gf (MS0850500F250S1A), and 295gf (MS0850500F295S1A). Operating force determines the physical effort required to actuate the switch. Selection should be based on the specific actuation mechanism in the application. All variants maintain identical electrical ratings and mechanical life within the E-Switch series.

Q: Does packaging type affect functional compatibility?

A: Packaging type (Bulk, Tray) does not affect electrical or mechanical function. The 41SM1 is supplied in Bulk packaging, while APEM MBZ101 variants are supplied in Tray packaging, and E-Switch MS0850500 variants are supplied in Bulk packaging. Packaging selection is determined by inventory management and procurement requirements, not by application compatibility.

Q: What compliance certifications should be verified when substituting the 41SM301?

A: Both the original 41SM301 and all listed substitutes are RoHS compliant. The 41SM1 maintains RoHS compliance identical to the original part. APEM and E-Switch alternatives are ROHS3 compliant, which is a more recent standard. All parts listed are EAR99 classified and share the same HTSUS code (8536.50.7000). Compliance status does not restrict substitution among these parts.

Q: Can the 41SM301 be used in applications requiring operation below -40°C?

A: The 41SM301 is rated for operation down to -55°C. The 41SM1 direct equivalent maintains this specification. APEM MBZ101 alternatives are limited to -40°C minimum, making them unsuitable for applications requiring -55°C operation. E-Switch alternatives are limited to -25°C minimum. For applications requiring -55°C operation, the 41SM1 is the only suitable substitute among the listed alternatives.