AM51155D43N-A Equivalent & Substitute Parts

Part Overview

The AM51155D43N-A is a snap-action switch manufactured by Panasonic Electric Works, configured as a SPST-NC (Single Pole Single Throw - Normally Closed) chassis mount component with lever and roller actuator options. This part is rated for 11A AC at 125V and 600mA DC at 125V, with quick connect 0.250" (6.3mm) termination. The product is currently obsolete, making identification of equivalent and substitute parts essential for system maintenance, repair, and redesign applications.

Substiute Parts

AM51155D43N-A

Panasonic Electric WorksIn Stock: 994AM51155D43N-A Datasheet

Current PartRFQ

83264843

CrouzetIn Stock: 92683264843 Datasheet

SimilarRFQ

V7-6B39D8-348-1

Honeywell Sensing and Productivity SolutionsIn Stock: 831V7-6B39D8-348-1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AM51155D43N-A is determined by the following critical parameters:

• Circuit Configuration: SPST-NC topology defines the electrical switching behavior
• Current and Voltage Ratings: AC/DC current capacity and voltage withstand requirements
• Mounting Interface: Chassis mount form factor and physical envelope
• Termination Compatibility: Quick connect terminal type and size
• Operating Temperature Range: Environmental operating limits
• Mechanical and Electrical Life: Cycle durability specifications

The substitute parts identified below are grouped based on compatibility with these parameters. Parts with different circuit configurations (SPST-NO vs. SPST-NC) or significantly different electrical ratings represent functional alternatives rather than direct equivalents and require circuit-level evaluation.

Parameter Comparison

Engineering Selection Recommendations

Crouzet 83264843: This part is currently active and RoHS compliant. However, it is configured as SPST-NO (Normally Open) rather than SPST-NC, representing a different circuit topology. The current rating is higher (12A AC at 250V), and the termination connector size differs (0.187" vs. 0.250"). The mechanical life specification is significantly lower (1,000,000 cycles vs. 10,000,000 cycles). Selection of this part requires verification that the circuit topology change and connector size difference are acceptable for the target application.

Honeywell V7-6B39D8-348-1: This part is currently active and RoHS compliant. Detailed electrical and mechanical specifications are not provided in the available data, limiting direct parameter comparison. The part is listed as a substitute in the original AM51155D43N-A documentation. Selection of this part requires confirmation of circuit configuration, current/voltage ratings, and termination compatibility with the application requirements.

Frequently Asked Questions (FAQ)

Q: Can the Crouzet 83264843 be used as a direct replacement for the AM51155D43N-A?

A: No. The Crouzet part has a different circuit configuration (SPST-NO vs. SPST-NC), different termination connector size (0.187" vs. 0.250"), and lower mechanical life (1,000,000 vs. 10,000,000 cycles). Circuit-level redesign and connector adaptation would be required.

Q: What is the significance of the SPST-NC vs. SPST-NO difference?

A: SPST-NC (Normally Closed) means the switch contacts are closed when not actuated and open when pressed. SPST-NO (Normally Open) means the contacts are open when not actuated and closed when pressed. These represent opposite switching behaviors and cannot be interchanged without circuit modification.

Q: Is the Honeywell V7-6B39D8-348-1 a suitable alternative?

A: The Honeywell part is listed as a documented substitute for the AM51155D43N-A. However, complete electrical and mechanical specifications are not provided. Verification of circuit configuration, current/voltage ratings, and termination compatibility is necessary before selection.

Q: What are the key parameters that determine substitutability?

A: Circuit configuration (SPST-NC/SPST-NO), current and voltage ratings, actuator type, mounting interface, termination connector type and size, operating temperature range, and mechanical/electrical life specifications are the primary determinants of substitutability.

Q: Why is the AM51155D43N-A obsolete?

A: Product obsolescence is determined by the manufacturer. The Panasonic Electric Works AM5 series snap-action switch has been discontinued. Active alternatives from other manufacturers are available for new designs or system replacements.

Q: Are there compliance differences between the main part and substitutes?

A: The Crouzet 83264843 and Honeywell V7-6B39D8-348-1 are both RoHS compliant and carry EAR99 ECCN classification. The original AM51155D43N-A is cadmium-free but does not specify RoHS compliance status. Compliance verification with system-level requirements is recommended.