AM51155C43N-A Equivalent & Substitute Parts

Part Overview

The AM51155C43N-A is a snap-action switch manufactured by Panasonic Electric Works, configured as a SPST-NC (Single Pole Single Throw - Normally Closed) device with chassis mount installation. This switch is rated for 11A AC at 125V and 600mA DC at 125V, featuring a lever-roller actuator with quick connect termination. The product is currently obsolete, making identification of functionally equivalent alternatives necessary for system maintenance, repair, and redesign applications.

Substiute Parts

AM51155C43N-A

Panasonic Electric WorksIn Stock: 861AM51155C43N-A Datasheet

Current PartRFQ

83264647

CrouzetIn Stock: 122783264647 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AM51155C43N-A is determined by the following critical parameters:

Circuit Configuration: SPST-NC topology is mandatory. The switch must maintain normally-closed contact configuration to preserve circuit logic in the target application.

Switch Function: On-Mom (momentary) operation is required. The switch must return to its normally-closed state upon release of the actuator.

Actuator Type: Lever-roller actuator configuration must be maintained to ensure mechanical compatibility with existing mounting interfaces and actuation mechanisms.

Mounting Type: Chassis mount installation is required for direct mechanical and electrical integration.

Termination Style: Quick connect 0.187" (4.7mm) termination is mandatory for electrical connection compatibility.

Electrical Ratings: The substitute part must meet or exceed the AC current rating of 11A at 125V. DC ratings and voltage specifications must be compatible with the application requirements.

Physical Dimensions: Operating position, pretravel, differential travel, and overtravel parameters must be within acceptable tolerances to ensure proper mechanical function and actuation feel.

Parameter Comparison

Engineering Selection Recommendations

The Crouzet 83264647 qualifies as a functional substitute for the AM51155C43N-A based on matching circuit configuration (SPST-NC), switch function (On-Mom), actuator type (lever-roller), mounting type (chassis mount), and termination style (quick connect 0.187").

The Crouzet part demonstrates higher AC current capacity (12A at 250V versus 11A at 125V) and an extended upper operating temperature limit (125°C versus 105°C). The mechanical life specification of the Crouzet part (1,000,000 cycles) is lower than the original Panasonic part (10,000,000 cycles), which may impact long-term reliability in high-cycle applications.

The Crouzet 83264647 carries active product status and RoHS compliance certification, supporting long-term availability and regulatory alignment. Both parts share MSL 1 (Unlimited) moisture sensitivity classification and EAR99 export control designation.

Frequently Asked Questions (FAQ)

Q: Can the Crouzet 83264647 directly replace the AM51155C43N-A in all applications?

A: Direct substitution is mechanically and electrically feasible based on matching circuit topology, actuator configuration, mounting type, and termination style. However, the lower mechanical life rating (1,000,000 cycles versus 10,000,000 cycles) requires evaluation against application duty cycle requirements.

Q: What are the key differences in electrical ratings between these parts?

A: The Crouzet part is rated for 12A AC at 250V, compared to the Panasonic part at 11A AC at 125V. The higher voltage rating of the Crouzet part provides greater margin in applications operating at or below 125V AC.

Q: Are the physical dimensions compatible?

A: Operating position measurements are nearly identical (0.815" versus 0.806"), and differential travel and overtravel parameters are within 0.004" to 0.010" variance. These dimensional differences are within typical mechanical tolerances for chassis-mount switch applications.

Q: Does the Crouzet part meet current regulatory requirements?

A: The Crouzet 83264647 is RoHS compliant and REACH unaffected, supporting compliance with current environmental and safety regulations. The original Panasonic part is obsolete and may not meet current procurement standards.

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

A: The Crouzet part operates from -20°C to 125°C, compared to the Panasonic part at -25°C to 105°C. The Crouzet part has a 5°C higher lower temperature limit and a 20°C higher upper temperature limit, which is advantageous for applications in elevated temperature environments.