Honeywell 201LS501 Snap Action Switch - Equivalent & Substitute Parts

Part Overview

The Honeywell 201LS501 is a snap action switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 10A AC at 120V. This component features a side rotary roller actuator, chassis mount installation, and plug-in termination style. The switch is designed for applications requiring reliable on-momentary switching with IP67 ingress protection.

The 201LS501 is classified as obsolete. 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 component.

Substiute Parts

201LS501

Honeywell Sensing and Productivity SolutionsIn Stock: 1132201LS501 Datasheet

Current PartRFQ

LSA5A

Honeywell Sensing and Productivity SolutionsIn Stock: 1034LSA5A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 201LS501 is evaluated based on the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Circuit configuration: SPDT (DB/DM) required
• Switch function: On-Mom operation
• Current rating: Minimum 10A AC capability
• Voltage rating: Minimum 120V AC compatibility

Mechanical Compatibility Criteria:

• Actuator type: Side rotary configuration
• Mounting type: Chassis mount
• Termination style: Plug-in connection
• Ingress protection: IP67 or equivalent environmental sealing

Regulatory & Compliance Criteria:

• RoHS compliance status
• Moisture sensitivity level (MSL)

The substitute part LSA5A meets the core electrical requirements (SPDT circuit, 10A AC at 120V, on-momentary function) and mechanical requirements (side rotary actuator, chassis mount, plug-in termination). Both parts are manufactured by Honeywell and maintain RoHS compliance with MSL 1 rating.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: LSA5A

The LSA5A is the designated substitute for the obsolete 201LS501. Both components share identical electrical specifications (SPDT circuit, 10A AC at 120V, on-momentary function) and compatible mechanical interfaces (side rotary actuator, chassis mount, plug-in termination).

The LSA5A is currently in active production status, ensuring long-term availability and supply chain continuity. Both parts maintain RoHS compliance and MSL 1 rating, satisfying regulatory requirements for new designs and legacy system support.

Operational Differences:

The LSA5A exhibits lower operating force (46 gfm versus 51 gfm) and reduced pretravel (15° versus 20°), resulting in lighter actuation requirements. The LSA5A provides extended overtravel (60° versus 30°), offering greater mechanical tolerance in applications with variable actuator engagement. The LSA5A supports an expanded operating temperature range (-12°C to 93°C versus -29°C to 71°C), providing improved performance in elevated temperature environments.

Compliance Status:

Both components are RoHS compliant and carry MSL 1 (unlimited moisture sensitivity) classification, suitable for standard storage and handling conditions without desiccant requirements.

Frequently Asked Questions (FAQ)

Q: Can the LSA5A directly replace the 201LS501 in existing applications?

A: The LSA5A is electrically and mechanically compatible with the 201LS501 for SPDT switching applications at 10A AC and 120V. Both components feature identical circuit configuration, current rating, voltage rating, actuator type (side rotary), mounting method (chassis mount), and termination style (plug-in). Physical installation and electrical connection are compatible.

Q: What are the key differences between these two parts?

A: The primary differences are operating force (46 gfm for LSA5A versus 51 gfm for 201LS501), pretravel angle (15° versus 20°), differential travel (5° versus 12°), overtravel (60° versus 30°), and operating temperature range (-12°C to 93°C versus -29°C to 71°C). The LSA5A includes a status indicator feature not present in the 201LS501.

Q: Why is the 201LS501 listed as obsolete?

A: The 201LS501 has been discontinued by Honeywell. The LSA5A represents the active production equivalent, offering improved specifications and extended availability.

Q: Are there packaging differences between these parts?

A: The 201LS501 is supplied with standard packaging, while the LSA5A is supplied in bulk packaging. Both are suitable for component integration into assemblies.

Q: Do both parts meet RoHS compliance requirements?

A: Yes. Both the 201LS501 and LSA5A are RoHS compliant and carry MSL 1 (unlimited) moisture sensitivity level ratings.

Q: What is the impact of different operating force specifications?

A: The LSA5A requires 5 gfm less operating force than the 201LS501. This difference may affect actuator design in applications with force-sensitive mechanical linkages. System-level validation is necessary to confirm compatibility with existing actuator mechanisms.

Q: How do the temperature ranges affect part selection?

A: The LSA5A supports operation from -12°C to 93°C, compared to -29°C to 71°C for the 201LS501. The LSA5A provides superior high-temperature performance but reduced low-temperature capability. Application operating conditions determine which part is appropriate.