LSXU3K Snap Action Switch - Equivalent & Substitute Parts

Part Overview

The LSXU3K is a snap action switch manufactured by Honeywell Sensing and Productivity Solutions, classified as a Single Pole Double Throw (SPDT) switch with chassis mount configuration. This component is rated for 10A AC at 120V and 800mA DC at 115V, featuring a side rotary actuator without lever and screw terminal connections.

The LSXU3K has reached obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this switch configuration.

Substiute Parts

LSXU3K

Honeywell Sensing and Productivity SolutionsIn Stock: 825LSXU3K Datasheet

Current PartRFQ

LSU3K

Honeywell Sensing and Productivity SolutionsIn Stock: 871LSU3K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LSXU3K is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Circuit configuration: SPDT (DB/DM)
• Switch function: On-Momentary
• Current rating: 10A AC / 800mA DC
• Voltage rating: 120V AC / 115V DC
• Actuator type: Side Rotary - No Lever
• Mounting type: Chassis Mount
• Termination style: Screw Terminal
• Operating force: 46gfm
• Pretravel: 5°
• Overtravel: 70°

The LSU3K meets all mandatory substitution criteria and is classified as a direct equivalent. Both components are manufactured by Honeywell Sensing and Productivity Solutions and share identical electrical and mechanical specifications within the parameters provided.

Parameter Comparison

Engineering Selection Recommendations

The LSU3K is a direct functional equivalent to the obsolete LSXU3K. Both components are RoHS compliant and carry identical MSL ratings, ensuring regulatory and environmental compliance consistency.

The LSU3K maintains active product status with Honeywell Sensing and Productivity Solutions, providing assured supply chain availability compared to the obsolete LSXU3K. Current inventory of LSU3K is documented at 797 pieces in new original condition.

All critical electrical parameters—current ratings, voltage ratings, circuit configuration, and switch function—are identical between the two parts. Mechanical parameters including actuator type, mounting configuration, operating force, pretravel, and overtravel are equivalent.

A minor variation exists in differential travel specification: LSXU3K specifies 5° while LSU3K specifies 3°. This parameter difference does not affect substitution eligibility for applications where the LSXU3K was originally specified, as the LSU3K's differential travel remains within functional tolerance for SPDT snap action switch operation.

Frequently Asked Questions (FAQ)

Q: Can LSU3K directly replace LSXU3K in existing designs?

A: Yes. The LSU3K meets all mandatory electrical and mechanical specifications of the LSXU3K. Both components share identical circuit configuration (SPDT), current ratings (10A AC / 800mA DC), voltage ratings (120V AC / 115V DC), actuator type, mounting method, and termination style. Physical and functional compatibility is established.

Q: What is the significance of the differential travel difference between these parts?

A: Differential travel is the distance the actuator travels between the point of switch closure and the point of switch opening. LSXU3K specifies 5° differential travel while LSU3K specifies 3°. This variation does not prevent substitution, as both values fall within acceptable operating parameters for SPDT snap action switches. The LSU3K's reduced differential travel indicates a tighter switching response characteristic.

Q: Why is LSXU3K classified as obsolete?

A: Product obsolescence is determined by manufacturer discontinuation. The LSXU3K has been discontinued by Honeywell Sensing and Productivity Solutions. The LSU3K represents the active equivalent product line, ensuring continued availability and support.

Q: Are there compliance differences between LSXU3K and LSU3K?

A: No. Both components carry identical RoHS compliance status and MSL 1 (Unlimited) moisture sensitivity ratings. Regulatory and environmental compliance requirements are equivalent.

Q: What packaging differences exist between these parts?

A: LSXU3K is supplied in standard packaging configuration. LSU3K is supplied in bulk packaging. Packaging format does not affect electrical or mechanical performance; selection depends on procurement and inventory management requirements.

Q: Is operating temperature specification available for comparison?

A: Operating temperature data is not provided for LSXU3K. LSU3K specifies an operating temperature range of -12°C to 121°C. For applications requiring temperature specification confirmation, consult detailed product datasheets or contact the manufacturer directly.