Honeywell 11SM3 Snap Action Switch SPDT Equivalent & Substitute Parts

Part Overview

The Honeywell 11SM3 is an active snap action switch with Single Pole Double Throw (SPDT) 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 function. The part is RoHS compliant and rated for 10,000,000 mechanical cycles, making it suitable for industrial control and switching applications requiring high reliability and extended operational life.

Substitute parts are necessary when the 11SM3 experiences supply constraints, when application requirements permit operation at lower voltage ratings, or when alternative operating force specifications better match specific mechanical design requirements.

Substiute Parts

11SM3

Honeywell Sensing and Productivity SolutionsIn Stock: 78111SM3 Datasheet

Current PartRFQ

MS0850500F060S1A

E-SwitchIn Stock: 1035MS0850500F060S1A Datasheet

SimilarRFQ

MS0850500F080S1A

E-SwitchIn Stock: 1289MS0850500F080S1A Datasheet

SimilarRFQ

MS0850500F250S1A

E-SwitchIn Stock: 1435MS0850500F250S1A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Honeywell 11SM3 snap action switch is determined by the following critical parameters that must remain constant or compatible:

Mandatory Matching Parameters:

• Circuit configuration: SPDT (Single Pole Double Throw)
• Switch function: On-Momentary
• Current rating: 5A (AC)
• Actuator type: Round pin plunger
• Mounting type: Chassis mount
• Termination style: Solder lug

Parameters Permitting Variation:

• Voltage rating: The 11SM3 operates at 250V AC; substitute parts rated at 125V AC are acceptable for applications operating at or below 125V AC
• Operating force: Varies across substitute options (60gf, 80gf, 250gf) to accommodate different mechanical actuation requirements
• Operating temperature range: Substitute parts rated -25°C to 85°C are acceptable for applications within this narrower range
• Mechanical life: Substitute parts rated at 1,000,000 cycles are acceptable for applications not requiring the extended 10,000,000 cycle life of the primary part

The three E-Switch MS series parts listed below meet all mandatory matching parameters and are therefore valid substitutes within their specified operational constraints.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (Honeywell 11SM3): Select the Honeywell 11SM3 for applications requiring 250V AC operation, extended temperature range (-55°C to 125°C), or extended mechanical life (10,000,000 cycles). This part maintains active product status and full RoHS compliance.

Substitute Selection Criteria:

E-Switch MS0850500F060S1A: Select this substitute for applications operating at 125V AC or lower where the lowest operating force (60gf) is required. This part is suitable for applications with minimal actuation force requirements and operating temperatures between -25°C and 85°C. ROHS3 compliance and REACH unaffected status are confirmed.

E-Switch MS0850500F080S1A: Select this substitute for applications operating at 125V AC or lower where moderate operating force (80gf) is required. This part provides a mid-range actuation force option and is suitable for standard industrial switching applications within the -25°C to 85°C temperature range. ROHS3 compliance and REACH unaffected status are confirmed.

E-Switch MS0850500F250S1A: Select this substitute for applications operating at 125V AC or lower where higher operating force (250gf) is required. This part is suitable for applications requiring greater mechanical actuation resistance and is rated for -25°C to 85°C operation. ROHS3 compliance and REACH unaffected status are confirmed.

All substitute parts are active products with confirmed inventory availability and meet the mandatory electrical and mechanical compatibility requirements for SPDT snap action switching at 5A AC rating.

Frequently Asked Questions (FAQ)

Q: Can the E-Switch MS series parts replace the Honeywell 11SM3 in all applications?

A: The E-Switch MS series parts are compatible substitutes only for applications operating at 125V AC or lower. Applications requiring 250V AC operation must use the Honeywell 11SM3. Additionally, applications requiring operation below -25°C or above 85°C must use the Honeywell 11SM3 due to its extended temperature range of -55°C to 125°C.

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

A: The three E-Switch models differ only in operating force specification. MS0850500F060S1A provides 60gf operating force, MS0850500F080S1A provides 80gf, and MS0850500F250S1A provides 250gf. All other electrical and mechanical parameters are identical. Select the model matching your mechanical actuation force requirement.

Q: Are the substitute parts RoHS compliant?

A: Yes. All three E-Switch substitute parts are ROHS3 compliant and REACH unaffected, meeting current environmental compliance requirements.

Q: What is the mechanical life difference between the main part and substitutes?

A: The Honeywell 11SM3 is rated for 10,000,000 mechanical cycles, while all E-Switch substitutes are rated for 1,000,000 cycles. Select the Honeywell 11SM3 for applications requiring extended cycle life beyond 1,000,000 cycles.

Q: Are the operating positions compatible between the main part and substitutes?

A: The operating positions are nearly identical. The Honeywell 11SM3 operates at 0.330" (8.4mm), while E-Switch substitutes operate at 0.335" (8.5mm). This 0.005" difference is negligible for most mechanical mounting applications.

Q: Can I use an E-Switch substitute in a 250V AC circuit?

A: No. E-Switch MS series substitutes are rated for 125V AC maximum. Using them in 250V AC circuits exceeds their voltage rating and creates a safety hazard. The Honeywell 11SM3 must be used for 250V AC applications.

Q: What packaging is available for these parts?

A: All parts listed are supplied in bulk packaging. Inventory availability is confirmed: Honeywell 11SM3 (732 pcs), E-Switch MS0850500F060S1A (997 pcs), E-Switch MS0850500F080S1A (1250 pcs), and E-Switch MS0850500F250S1A (1404 pcs).