LSYAC1A-4N Equivalent & Substitute Parts

Part Overview

The LSYAC1A-4N 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 adjustable rod actuator with plug-in termination. The product is currently classified as obsolete, making identification of equivalent substitute parts essential for system maintenance, repair, and component sourcing in applications requiring SPDT switching functionality with these electrical specifications.

Substiute Parts

LSYAC1A-4N

Honeywell Sensing and Productivity SolutionsIn Stock: 1183LSYAC1A-4N Datasheet

Current PartRFQ

LSA1A-4M

Honeywell Sensing and Productivity SolutionsIn Stock: 936LSA1A-4M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LSYAC1A-4N is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Parameters:

• Circuit configuration: SPDT (DB/DM)
• Current rating: 10A AC / 800mA DC
• Voltage rating: 120V AC / 115V DC
• Switch function: On-Momentary operation

Mechanical Compatibility Parameters:

• Actuator type: Side rotary with adjustable rod
• Mounting type: Chassis mount
• Termination style: Plug-in connection
• Operating force: 46gfm
• Travel specifications: 15° pretravel, 5° differential travel, 60° overtravel

Environmental & Compliance Parameters:

• Operating temperature range: -12°C to 121°C
• RoHS compliance status
• Moisture sensitivity level: MSL 1

The substitute part LSA1A-4M meets all these criteria and is classified as an active product, providing a direct functional and mechanical replacement for the obsolete LSYAC1A-4N.

Parameter Comparison

Engineering Selection Recommendations

The LSA1A-4M is a direct equivalent substitute for the obsolete LSYAC1A-4N. Both components are manufactured by Honeywell Sensing and Productivity Solutions within the HDLS series and share identical electrical, mechanical, and environmental specifications.

Selection Basis:

The LSA1A-4M provides functional and mechanical interchangeability based on:

• Identical circuit configuration and switching characteristics
• Matching current and voltage ratings for both AC and DC applications
• Identical actuator geometry and mounting interface
• Identical operating force and travel specifications
• Identical operating temperature range
• Equivalent RoHS compliance and moisture sensitivity classification

The primary distinction is product status: the LSYAC1A-4N is obsolete while the LSA1A-4M is active. The LSA1A-4M is available in bulk packaging, supporting production and replacement applications. Both components carry identical ECCN (EAR99) and HTSUS (8536.50.9055) classifications.

Frequently Asked Questions (FAQ)

Q: Can LSA1A-4M directly replace LSYAC1A-4N in existing applications?

A: Yes. The LSA1A-4M is a direct functional and mechanical equivalent. All electrical ratings, actuator specifications, mounting interfaces, and termination styles are identical. No circuit modifications or mechanical adaptations are required.

Q: Are there differences in packaging between these parts?

A: The LSYAC1A-4N packaging is not specified in the available data. The LSA1A-4M is supplied in bulk packaging. Packaging format does not affect electrical or mechanical compatibility.

Q: What is the significance of the product status difference?

A: The LSYAC1A-4N is classified as obsolete, indicating it is no longer manufactured. The LSA1A-4M is active and currently in production. For new designs and ongoing component sourcing, the LSA1A-4M is the appropriate selection.

Q: Are the RoHS and compliance certifications identical?

A: Yes. Both parts are RoHS Compliant with MSL 1 (Unlimited) moisture sensitivity level. Both carry identical ECCN (EAR99) and HTSUS (8536.50.9055) classifications.

Q: What are the critical parameters that define substitution eligibility?

A: Substitution is determined by equivalence in circuit configuration (SPDT), current ratings (10A AC / 800mA DC), voltage ratings (120V AC / 115V DC), actuator type (side rotary adjustable rod), mounting type (chassis mount), termination style (plug-in), operating force (46gfm), and travel specifications (15° pretravel, 5° differential, 60° overtravel).

Q: Is inventory availability a factor in substitution?

A: Inventory status is not a substitution criterion. The LSYAC1A-4N has 1077 pieces in stock; the LSA1A-4M has 895 pieces in stock. Both are available for procurement.