Equivalent & Substitute Parts for Honeywell 2LS111 Snap Action Switch

Part Overview

The Honeywell 2LS111 is an SPDT snap action switch designed for chassis mount applications requiring 10A AC at 120V operation. This switch features a round pin plunger actuator with screw terminal connections and IP67 ingress protection. The product is currently active in production with RoHS compliance certification. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design requirements necessitate evaluation of functionally equivalent components.

Substiute Parts

2LS111

Honeywell Sensing and Productivity SolutionsIn Stock: 7182LS111 Datasheet

Current PartRFQ

D4B-4170N-NPT

Omron Automation and SafetyIn Stock: 1081D4B-4170N-NPT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The Omron D4B-4170N-NPT is identified as a functionally equivalent substitute based on the following alignment of critical parameters:

Matching Core Specifications:

• Circuit configuration: SPDT (DB/DM) topology identical
• AC current rating: 10A (AC) matches primary specification
• AC voltage rating: 120V matches primary specification
• Actuator type: Round pin plunger provides mechanical compatibility
• Mounting type: Chassis mount installation method identical
• Termination style: Screw terminal connection method identical
• Ingress protection: IP67 rating matches environmental sealing requirement

Extended Capabilities: The D4B-4170N-NPT provides additional DC ratings (6A at 30V) and extended operating temperature range (-40°C to 80°C) beyond the 2LS111 specification. These represent enhanced performance margins rather than deviations from the primary specification.

Mechanical Differences: Operating force (1900gf vs. 1020gf), release force (200gf vs. 227gf), and travel distances differ between the two parts. These variations remain within acceptable ranges for SPDT snap action switch applications and do not preclude substitution in standard switching circuits.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (Honeywell 2LS111): Select the 2LS111 when RoHS compliance is a mandatory requirement and the application operates within the specified temperature range of -29°C to 71°C. This part carries active product status and RoHS certification, making it suitable for regulated markets requiring lead-free component documentation.

Substitute Part Selection (Omron D4B-4170N-NPT): The D4B-4170N-NPT serves as a functional equivalent when the 2LS111 is unavailable or when the application requires extended operating temperature range (-40°C to 80°C) or DC voltage capability (30V at 6A). This part is active in production and carries EAR99 export classification identical to the primary part. The higher operating force (1900gf) must be evaluated against the mechanical actuation system to confirm compatibility.

Compliance Considerations: Both parts carry identical ECCN (EAR99) and HTSUS (8536.50.7000) classifications. The 2LS111 provides explicit RoHS compliance certification; the D4B-4170N-NPT RoHS status is listed as not applicable, requiring verification if RoHS compliance documentation is contractually required.

Frequently Asked Questions (FAQ)

Q: Can the Omron D4B-4170N-NPT directly replace the Honeywell 2LS111 in an existing circuit?

A: The D4B-4170N-NPT is electrically compatible for AC circuits operating at 10A and 120V. Physical compatibility requires verification of mounting clearance due to the 0.050" (1.2mm) difference in operating position. The higher operating force (1900gf vs. 1020gf) must be confirmed as acceptable for the mechanical actuation mechanism.

Q: What are the key differences between these two switches?

A: The primary differences are: (1) Operating force is 880gf higher on the D4B-4170N-NPT; (2) The D4B-4170N-NPT provides DC voltage capability (30V at 6A) while the 2LS111 does not; (3) Operating temperature range is extended on the D4B-4170N-NPT (-40°C to 80°C vs. -29°C to 71°C); (4) The D4B-4170N-NPT provides rated electrical and mechanical life specifications (500,000 and 30,000,000 cycles respectively).

Q: Are both switches suitable for IP67 applications?

A: Yes. Both the 2LS111 and D4B-4170N-NPT carry IP67 ingress protection ratings, indicating dust-tight and waterproof sealing suitable for harsh environmental conditions.

Q: What is the impact of the different operating forces?

A: The D4B-4170N-NPT requires 880gf additional force to actuate compared to the 2LS111. This difference affects the mechanical design of the actuation system. Applications using manual pushbuttons, solenoid actuators, or mechanical linkages must confirm that the actuation mechanism can reliably deliver the higher force required by the D4B-4170N-NPT.

Q: Does the D4B-4170N-NPT meet RoHS requirements?

A: The D4B-4170N-NPT RoHS status is listed as not applicable. If RoHS compliance documentation is required for your application, the Honeywell 2LS111 with explicit RoHS Compliant certification is the appropriate selection.

Q: Can these switches be used in DC circuits?

A: The 2LS111 specifications do not include DC ratings. The D4B-4170N-NPT is rated for 6A DC at 30V maximum. For DC applications, the D4B-4170N-NPT is the suitable choice between these two parts.

Q: What mounting considerations apply to substitution?

A: Both switches use chassis mount installation with screw terminals. The operating position difference (1.330" vs. 1.380") requires verification that the enclosure mounting hole and internal clearances accommodate the D4B-4170N-NPT without interference.