Honeywell 11SM244 Snap Action Switch SPDT Equivalent & Substitute Parts

Part Overview

The Honeywell 11SM244 is an active-status snap action switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 5A AC at 250V and 300mA DC at 125V. This chassis-mounted 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 rated for 10,000,000 mechanical cycles across an operating temperature range of -55°C to 125°C. Equivalent substitute parts are available from E-Switch with comparable electrical ratings and mechanical specifications, offering alternative sourcing options for applications where the primary part may have supply constraints or where specific operating force characteristics are required.

Substiute Parts

11SM244

Honeywell Sensing and Productivity SolutionsIn Stock: 104311SM244 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 of the Honeywell 11SM244 with E-Switch MS series snap action switches is based on the following alignment of critical electrical and mechanical parameters:

Electrical Compatibility: All substitute parts maintain the SPDT circuit configuration and 5A AC current rating. The substitute parts are rated for 125V AC, which represents a lower voltage specification compared to the main part's 250V AC rating. Substitution is valid only for applications operating at or below 125V AC.

Mechanical Compatibility: All substitute parts feature identical actuator type (round pin plunger), mounting type (chassis mount), and termination style (solder lug). Operating position measurements are comparable (0.335" versus 0.330"), and pretravel specifications are provided for all substitutes.

Operating Force Variants: The E-Switch MS0850500 series offers three operating force options (60gf, 80gf, and 250gf) compared to the main part's 141gf. Selection among substitutes depends on the specific actuation force requirement of the application.

Temperature and Lifecycle Considerations: Substitute parts operate within -25°C to 85°C, which is narrower than the main part's -55°C to 125°C range. Mechanical life ratings for substitutes are 1,000,000 cycles, significantly lower than the main part's 10,000,000 cycles.

Compliance Status: All substitute parts are ROHS3 compliant and REACH unaffected, meeting modern regulatory requirements.

Parameter Comparison

Engineering Selection Recommendations

Voltage Constraint: The Honeywell 11SM244 operates at 250V AC, while all E-Switch substitutes are rated for 125V AC maximum. Substitution is permissible only in applications where the circuit voltage does not exceed 125V AC.

Mechanical Cycle Life: The main part is rated for 10,000,000 mechanical cycles, while E-Switch substitutes are rated for 1,000,000 cycles. Applications requiring extended cycle life should retain the original Honeywell part.

Temperature Operating Range: The Honeywell 11SM244 supports -55°C to 125°C operation. E-Switch substitutes operate within -25°C to 85°C. Applications requiring operation outside this narrower range require the original part.

Operating Force Selection: E-Switch offers three force variants. The MS0850500F080S1A (80gf) provides the closest match to the main part's 141gf operating force. The MS0850500F060S1A (60gf) is suitable for applications requiring lighter actuation, while the MS0850500F250S1A (250gf) is for applications requiring higher actuation force.

Regulatory Compliance: All parts maintain active product status and meet current RoHS and REACH requirements, supporting modern manufacturing and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can the E-Switch MS0850500 series parts directly replace the Honeywell 11SM244 in all applications?

A: No. Substitution is valid only when the application operates at 125V AC or lower. Applications requiring 250V AC operation must use the original Honeywell 11SM244. Additionally, applications requiring mechanical cycle life exceeding 1,000,000 cycles or operating temperatures below -25°C or above 85°C require the original part.

Q: What is the significance of the different operating force ratings among the E-Switch substitutes?

A: The three E-Switch variants offer different actuation forces: 60gf (MS0850500F060S1A), 80gf (MS0850500F080S1A), and 250gf (MS0850500F250S1A). The 80gf variant provides the closest approximation to the main part's 141gf. Selection depends on the specific actuation force requirement of the application circuit.

Q: Are all substitute parts RoHS compliant?

A: Yes. The Honeywell 11SM244 is RoHS compliant, and all E-Switch substitutes are ROHS3 compliant. All parts are REACH unaffected, meeting current environmental and regulatory standards.

Q: What are the key mechanical differences between the main part and substitutes?

A: Operating position differs slightly (0.330" versus 0.335"), and pretravel is greater in substitutes (0.020" versus 0.043"). The main part specifies differential travel and overtravel values not provided for substitutes. These differences may affect circuit timing and should be evaluated for the specific application.

Q: Can E-Switch substitutes be used in high-temperature applications?

A: No. E-Switch substitutes operate to a maximum of 85°C, while the Honeywell 11SM244 operates to 125°C. Applications requiring operation above 85°C require the original Honeywell part.

Q: What is the packaging configuration for these parts?

A: All parts are supplied in bulk packaging. Current inventory levels are: Honeywell 11SM244 (1009 pcs), MS0850500F060S1A (997 pcs), MS0850500F080S1A (1250 pcs), and MS0850500F250S1A (1404 pcs).