LSYAB1A3 Equivalent & Substitute Parts Reference

Part Overview

The LSYAB1A3 is a snap action SPDT (Single Pole Double Throw) switch manufactured by Honeywell Sensing and Productivity Solutions, designed for chassis mount applications with side rotary actuation. This component operates at 10A AC (120V) and 800mA DC (115V), featuring plug-in termination and right-side actuator mounting.

The LSYAB1A3 carries an Obsolete product status. Identifying equivalent substitute parts is necessary to maintain system functionality and ensure continued availability for maintenance, repair, and new production applications where this switch specification is required.

Substiute Parts

LSYAB1A3

Honeywell Sensing and Productivity SolutionsIn Stock: 778LSYAB1A3 Datasheet

Current PartRFQ

LSA1A3

Honeywell Sensing and Productivity SolutionsIn Stock: 1094LSA1A3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LSYAB1A3 are identified based on strict electrical and mechanical parameter matching within the HDLS series. The following parameters determine substitution eligibility:

Critical 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: Plug In
• Operating force: 46gfm
• Travel specifications: Pretravel 15°, Differential Travel 5°, Overtravel 60°

Substitute parts must maintain identical electrical performance characteristics and mechanical interface specifications to ensure direct functional replacement without circuit redesign or mechanical modification.

Parameter Comparison

Engineering Selection Recommendations

The LSA1A3 is a direct functional equivalent to the obsolete LSYAB1A3 within the HDLS series. Both components share identical electrical ratings, circuit configuration, mechanical interface specifications, and compliance certifications.

Selection Basis:

The LSA1A3 maintains Active product status with current manufacturing support from Honeywell Sensing and Productivity Solutions, providing supply chain continuity for applications previously using the LSYAB1A3. Both parts are RoHS Compliant and carry identical Moisture Sensitivity Level (MSL) ratings.

The operating temperature range difference (-40°C to 121°C for LSYAB1A3 versus -12°C to 121°C for LSA1A3) represents the only parameter variance. Applications requiring operation below -12°C must evaluate this specification against system requirements.

All electrical performance parameters, mechanical actuation characteristics, and termination specifications are identical, supporting direct substitution in existing circuit designs and mechanical assemblies.

Frequently Asked Questions (FAQ)

Q: Can the LSA1A3 directly replace the LSYAB1A3 in existing applications?

A: Yes. The LSA1A3 provides identical electrical ratings (10A AC at 120V, 800mA DC at 115V), circuit configuration (SPDT), switch function (On-Momentary), actuator type (Side Rotary - No Lever), mounting type (Chassis Mount), and termination style (Plug In). No circuit redesign or mechanical modification is required.

Q: What is the significance of the operating temperature range difference?

A: The LSYAB1A3 operates from -40°C to 121°C, while the LSA1A3 operates from -12°C to 121°C. Applications requiring operation below -12°C must confirm that the LSA1A3 meets system temperature requirements before substitution.

Q: Are both parts RoHS Compliant?

A: Yes. Both the LSYAB1A3 and LSA1A3 are RoHS Compliant with identical Moisture Sensitivity Level (MSL) ratings of 1 (Unlimited).

Q: Why is the LSYAB1A3 listed as Obsolete?

A: The LSYAB1A3 carries Obsolete product status, indicating discontinued manufacturing. The LSA1A3 is the current production equivalent within the HDLS series, providing continued availability and supply chain support.

Q: Are the mechanical actuation characteristics identical?

A: Yes. Both parts share identical operating force (46gfm), pretravel (15°), differential travel (5°), and overtravel (60°) specifications.

Q: What is the plug-in termination style?

A: Both components use plug-in termination for chassis mount applications, enabling tool-free installation and removal without soldering or permanent connection methods.