LSYAC4L4 Equivalent & Substitute Parts Reference

Part Overview

The LSYAC4L4 is a snap action DPDT (double pole double throw) switch manufactured by Honeywell Sensing and Productivity Solutions, designed for chassis mount applications with screw terminal connections. This switch is rated for 10A AC at 120V and 800mA DC at 115V, featuring a side rotary actuator without lever and left-side mounting configuration.

The LSYAC4L4 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain system functionality, ensure continued availability for maintenance and repair operations, and support long-term product lifecycle management.

Substiute Parts

LSYAC4L4

Honeywell Sensing and Productivity SolutionsIn Stock: 1172LSYAC4L4 Datasheet

Current PartRFQ

LSA4L4

Honeywell Sensing and Productivity SolutionsIn Stock: 794LSA4L4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LSYAC4L4 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Circuit configuration: DPDT (DB/DM)
• Switch function: On-Mom
• Current rating: 10A AC minimum, 800mA DC minimum
• Voltage rating: 120V AC minimum, 115V DC minimum

Mechanical Equivalence Requirements:

• Actuator type: Side Rotary - No Lever
• Mounting type: Chassis Mount
• Termination style: Screw Terminal
• Actuator position: Left Side mounted

Environmental & Compliance Requirements:

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

The LSA4L4 meets all substitution criteria across electrical, mechanical, and environmental parameters, establishing it as a direct equivalent for the obsolete LSYAC4L4.

Parameter Comparison

Engineering Selection Recommendations

The LSA4L4 is the direct equivalent substitute for the obsolete LSYAC4L4. Both parts are manufactured by Honeywell Sensing and Productivity Solutions within the HDLS series and share identical electrical, mechanical, and environmental specifications.

Selection Basis:

The LSA4L4 maintains active product status, ensuring ongoing availability and supply chain continuity. Both parts carry RoHS compliance certification and MSL 1 moisture sensitivity rating, meeting regulatory and environmental requirements.

All critical parameters—circuit configuration, current and voltage ratings, actuator type, mounting configuration, termination style, operating temperature range, and mechanical characteristics—are identical between the main part and substitute.

The LSA4L4 is available in bulk packaging with 782 units in current inventory, supporting both immediate replacement needs and long-term stock planning.

Frequently Asked Questions (FAQ)

Q: Can LSA4L4 be used as a direct replacement for LSYAC4L4?

A: Yes. The LSA4L4 is a direct equivalent substitute. Both parts share identical electrical ratings (10A AC at 120V, 800mA DC at 115V), circuit configuration (DPDT), actuator type (side rotary without lever), mounting type (chassis mount), and termination style (screw terminal). All mechanical parameters including operating force, pretravel, differential travel, and overtravel are identical.

Q: What is the primary difference between LSYAC4L4 and LSA4L4?

A: The primary difference is product status. LSYAC4L4 is obsolete, while LSA4L4 is active. Both parts are functionally and mechanically equivalent. LSA4L4 is available in bulk packaging with current inventory support.

Q: Are there any compatibility concerns when substituting LSA4L4 for LSYAC4L4?

A: No compatibility concerns exist. Both parts are manufactured by Honeywell Sensing and Productivity Solutions within the same HDLS series. Electrical specifications, mechanical dimensions, mounting interfaces, and termination connections are identical. Direct substitution is supported without circuit or mechanical modifications.

Q: What packaging options are available for the substitute part?

A: LSA4L4 is supplied in bulk packaging. LSYAC4L4 packaging information was not specified in the original documentation.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both LSYAC4L4 and LSA4L4 are RoHS compliant and carry MSL 1 (Unlimited) moisture sensitivity rating. Both are classified under ECCN EAR99 for export control purposes.

Q: What is the operating temperature range for both parts?

A: Both parts operate across the identical temperature range of -12°C to 121°C, supporting applications across industrial and commercial environments.