LSXN4K Equivalent & Substitute Parts Reference

Part Overview

The LSXN4K is a snap action SPDT (Single Pole Double Throw) switch manufactured by Honeywell Sensing and Productivity Solutions. This chassis-mounted switch is rated for 10A AC at 120V and 800mA DC at 115V, featuring a side rotary actuator without lever and screw terminal connections. The LSXN4K is classified as obsolete, making identification of equivalent substitute parts essential for ongoing maintenance, repair, and system continuity in applications requiring SPDT switching functionality with explosion-proof design.

Substiute Parts

LSXN4K

Honeywell Sensing and Productivity SolutionsIn Stock: 990LSXN4K Datasheet

Current PartRFQ

LSXN3K

Honeywell Sensing and Productivity SolutionsIn Stock: 738LSXN3K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LSXN4K is determined by strict equivalence across the following critical parameters:

Electrical Parameters: Circuit configuration (SPDT DB/DM), switch function (On-On), current ratings (10A AC / 800mA DC), and voltage ratings (120V AC / 115V DC) must be identical.

Mechanical Parameters: Actuator type (Side Rotary - No Lever), mounting type (Chassis Mount), and termination style (Screw Terminal) must match exactly.

Operational Parameters: Operating force (46gfm), pretravel (65°), differential travel (30°), and overtravel (20°) must be identical.

Environmental Parameters: Operating temperature range (-1°C to 121°C) and explosion-proof design must be maintained.

Compliance Parameters: RoHS compliance and MSL rating must be equivalent or superior.

The LSXN3K meets all these criteria and is identified as a direct substitute for the obsolete LSXN4K.

Parameter Comparison

Engineering Selection Recommendations

The LSXN3K is a direct functional and electrical equivalent to the obsolete LSXN4K. Both parts are manufactured by Honeywell Sensing and Productivity Solutions within the LSX series and share identical electrical specifications, mechanical configurations, and operational characteristics.

The primary distinction is product status: the LSXN4K is obsolete while the LSXN3K maintains active production status. This makes the LSXN3K the appropriate selection for new designs, replacements, and system continuity applications.

Both parts maintain RoHS compliance and identical MSL ratings, ensuring compatibility with current manufacturing and environmental standards. The LSXN3K is available in bulk packaging, supporting both individual component replacement and larger procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can the LSXN3K directly replace the LSXN4K in existing applications?

A: Yes. The LSXN3K is electrically and mechanically equivalent to the LSXN4K across all specified parameters, including circuit configuration, current and voltage ratings, actuator type, mounting configuration, and operational characteristics. Direct substitution is supported without circuit or mechanical modifications.

Q: What is the primary reason for substituting the LSXN4K?

A: The LSXN4K is classified as obsolete. The LSXN3K is the active equivalent part from the same manufacturer and series, ensuring continued availability and supply chain reliability.

Q: Are there any differences in packaging between these parts?

A: The LSXN4K is specified with "-" packaging notation, while the LSXN3K is supplied in bulk packaging. Both parts are identical in form, fit, and function. Packaging differences do not affect electrical or mechanical performance.

Q: Do both parts meet current compliance standards?

A: Yes. Both the LSXN4K and LSXN3K are RoHS compliant with MSL rating 1 (Unlimited), meeting current environmental and moisture sensitivity requirements.

Q: Are the operating force and travel specifications identical?

A: Yes. Both parts specify identical operating force (46gfm), pretravel (65°), differential travel (30°), and overtravel (20°), ensuring equivalent actuation behavior in all applications.

Q: What is the current availability status of each part?

A: The LSXN4K has 937 pieces in stock as new original inventory but is classified as obsolete. The LSXN3K has 721 pieces in stock and maintains active product status, ensuring continued availability for future orders.