Honeywell 1SM282 Snap Action Switch SPDT Equivalent & Substitute Parts

Part Overview

The Honeywell 1SM282 is a snap action switch with Single Pole Double Throw (SPDT) circuit configuration, rated for 5A at 250V AC and 30V DC. This component features a round pin plunger actuator and chassis mount termination with solder lugs. The 1SM282 is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations. Substitute parts must maintain SPDT circuit functionality, compatible current and voltage ratings, and equivalent mechanical mounting characteristics.

Substiute Parts

1SM282

Honeywell Sensing and Productivity SolutionsIn Stock: 8991SM282 Datasheet

Current PartRFQ

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

Substitute parts for the 1SM282 are grouped based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Circuit Configuration: SPDT (maintained across all substitutes)
• Switch Function: On-Momentary (maintained across all substitutes)
• Actuator Type: Round Pin Plunger (maintained across all substitutes)
• Mounting Type: Chassis Mount (maintained across all substitutes)
• Termination Style: Solder Lug (maintained across all substitutes)

Electrical Rating Considerations:

• Current Rating: Substitutes rated at 5A or higher are acceptable
• Voltage Rating - AC: Substitutes rated at 125V or higher are acceptable
• Voltage Rating - DC: Not specified for substitute parts; AC rating is primary criterion

Mechanical Compatibility:

• Operating Position: 0.330" (8.4mm) maintained across all substitutes
• Operating Force: Varies by substitute (60 gf to 295 gf); selection depends on application requirements

Regulatory Compliance:

• RoHS Status: All substitutes are RoHS3 Compliant or RoHS Compliant
• Moisture Sensitivity Level: All substitutes rated MSL 1 (Unlimited)

Substitutes are divided into two manufacturer groups: APEM Inc. (MBZ series) and E-Switch (MS series). APEM substitutes provide higher current ratings (10A) with extended mechanical life. E-Switch substitutes maintain the 5A current rating with variable operating force options.

Parameter Comparison

Engineering Selection Recommendations

APEM MBZ101 Series (MBZ101A01C01X01, MBZ101A01C02X01):

The APEM MBZ101 substitutes are active products with ROHS3 compliance and REACH unaffected status. These parts provide 10A current rating at 250V AC, exceeding the 1SM282 electrical specifications. The MBZ101 series offers significantly extended mechanical life (10,000,000 cycles versus 80,000 cycles) and electrical life rating (10,000 cycles). Operating temperature range is reduced to -40°C to 85°C compared to the 1SM282 range of -55°C to 125°C. Operating force is doubled at 285 gf. These substitutes are suitable for applications where higher current capacity and extended mechanical durability are beneficial and where the reduced temperature range is acceptable.

E-Switch MS0850500 Series (MS0850500F060S1A, MS0850500F080S1A, MS0850500F250S1A, MS0850500F295S1A):

The E-Switch MS0850500 substitutes are active products with ROHS3 compliance and REACH unaffected status. These parts maintain the 5A current rating but operate at 125V AC, which is lower than the 1SM282 250V AC rating. Operating temperature range is reduced to -25°C to 85°C. The MS series offers variable operating force options (60 gf, 80 gf, 250 gf, 295 gf) to match specific application requirements. Mechanical life is 1,000,000 cycles with electrical life of 50,000 cycles. These substitutes are suitable for applications operating at 125V AC where the specific operating force characteristic is a design requirement.

Selection Criteria:

For applications requiring 250V AC operation, APEM MBZ101 substitutes are the appropriate choice. For applications operating at 125V AC with specific operating force requirements, E-Switch MS0850500 substitutes provide multiple options. All substitutes maintain SPDT circuit configuration, on-momentary function, round pin plunger actuator, chassis mount, and solder lug termination. All substitutes are active products with current regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can the APEM MBZ101 series substitute for the 1SM282 in all applications?

A: The APEM MBZ101 series maintains SPDT circuit configuration, on-momentary function, and 250V AC voltage rating. However, the operating temperature range is reduced from -55°C to 125°C to -40°C to 85°C. Applications requiring operation below -40°C or above 85°C require evaluation of the specific operating conditions. The higher current rating (10A versus 5A) and extended mechanical life are compatible with 1SM282 applications.

Q: Why do E-Switch MS0850500 parts have lower voltage ratings than the 1SM282?

A: The E-Switch MS0850500 series is rated for 125V AC operation, which is lower than the 1SM282 250V AC rating. These substitutes are suitable only for applications operating at 125V AC or lower. Applications requiring 250V AC operation must use APEM MBZ101 substitutes or equivalent parts rated for 250V AC.

Q: What is the significance of different operating force values in the E-Switch MS0850500 series?

A: Operating force determines the mechanical effort required to actuate the switch. The MS0850500 series offers four options: 60 gf, 80 gf, 250 gf, and 295 gf. The 1SM282 operates at 141 gf. Selection of the appropriate operating force depends on the specific application actuator mechanism and required actuation characteristics. Higher operating force values provide greater resistance to unintended actuation.

Q: Are all substitute parts RoHS compliant?

A: Yes. The 1SM282 is RoHS Compliant. All APEM MBZ101 substitutes are ROHS3 Compliant. All E-Switch MS0850500 substitutes are ROHS3 Compliant. All parts maintain Moisture Sensitivity Level 1 (Unlimited).

Q: What is the difference between the two APEM MBZ101 part numbers?

A: MBZ101A01C01X01 and MBZ101A01C02X01 are both APEM MBZ101 series parts with identical electrical and mechanical specifications. Both are rated 10A at 250V AC, feature SPDT configuration, on-momentary function, and 10,000,000 cycle mechanical life. The difference is in packaging: MBZ101A01C01X01 is supplied in Tray packaging with 640 pieces in stock, while MBZ101A01C02X01 is supplied in Tray packaging with 743 pieces in stock.

Q: Can E-Switch MS0850500 parts be used in applications originally designed for 250V AC operation?

A: No. E-Switch MS0850500 parts are rated for 125V AC maximum. Using these parts in 250V AC applications exceeds the voltage rating and creates a safety hazard. Applications requiring 250V AC operation must use parts rated for 250V AC, such as the APEM MBZ101 series.

Q: What is the mechanical life difference between the 1SM282 and substitute parts?

A: The 1SM282 has 80,000 cycles mechanical life. APEM MBZ101 substitutes have 10,000,000 cycles mechanical life. E-Switch MS0850500 substitutes have 1,000,000 cycles mechanical life. All substitutes exceed or significantly exceed the original part's mechanical life rating.

Q: Are the operating positions identical across all parts?

A: The 1SM282 and APEM MBZ101 series have operating position of 0.330" (8.4mm). E-Switch MS0850500 series has operating position of 0.335" (8.5mm). This 0.005" difference is minimal and typically does not affect mechanical compatibility in chassis mount applications.