AM51143C43N-A Equivalent & Substitute Parts

Part Overview

The AM51143C43N-A is a snap action switch manufactured by Panasonic Electric Works, configured as a single-pole double-throw (SPDT) device with on-momentary function. This chassis-mounted switch is rated for 11A AC at 125V and 600mA DC at 125V, featuring a straight lever actuator with quick connect termination. The product is classified as obsolete, making identification of functionally equivalent alternatives necessary for system maintenance, repair, and redesign applications where continued supply cannot be guaranteed.

Substiute Parts

AM51143C43N-A

Panasonic Electric WorksIn Stock: 876AM51143C43N-A Datasheet

Current PartRFQ

83264043

CrouzetIn Stock: 82983264043 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AM51143C43N-A is determined by the following critical parameters:

• Circuit Configuration: Must be SPDT to maintain electrical functionality
• Switch Function: Must be On-Momentary to preserve operational behavior
• Actuator Type: Must be Lever, Straight for mechanical compatibility
• Mounting Type: Must be Chassis Mount for installation compatibility
• Termination Style: Must be Quick Connect - 0.187" (4.7mm) for electrical connection compatibility
• Current and Voltage Ratings: Substitute must meet or exceed the 11A AC @ 125V requirement
• Operating Temperature Range: Substitute must cover the operational envelope or be suitable for the intended application temperature range

The Crouzet 83264043 satisfies these substitution criteria across all mandatory parameters while providing enhanced voltage rating (250V AC) and comparable mechanical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The Crouzet 83264043 is a functionally equivalent substitute for the obsolete AM51143C43N-A. Selection should be based on the following factors:

Product Availability: The Crouzet 83264043 maintains active product status with current manufacturing support, ensuring long-term availability and supply chain reliability compared to the obsolete Panasonic part.

Regulatory Compliance: The Crouzet substitute is RoHS Compliant and REACH Unaffected, meeting modern environmental and regulatory requirements. The original Panasonic part does not specify these certifications.

Electrical Performance: The Crouzet part exceeds the original specifications with 12A AC current capacity at 250V, providing margin above the 11A @ 125V requirement of the AM51143C43N-A. This enhanced rating supports applications with higher voltage or current demands.

Mechanical Compatibility: Both parts share identical termination style (Quick Connect - 0.187"), mounting type (Chassis Mount), and actuator configuration (Lever, Straight), ensuring direct mechanical and electrical interchangeability in existing installations.

Operational Characteristics: Operating force differential (25gf vs. 30gf) and mechanical life variation (1,000,000 vs. 10,000,000 cycles) should be evaluated against specific application requirements. The Crouzet part operates across a wider temperature range (-20°C to 125°C vs. -25°C to 105°C).

Frequently Asked Questions (FAQ)

Q: Can the Crouzet 83264043 directly replace the AM51143C43N-A in existing applications?

A: Yes, the Crouzet 83264043 is mechanically and electrically compatible. Both parts feature identical quick connect termination (0.187"), chassis mount configuration, and SPDT on-momentary function. No circuit modifications or mechanical redesign is required.

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

A: The primary differences are voltage rating (250V vs. 125V), current capacity (12A vs. 11A), operating force (25gf vs. 30gf), and mechanical life rating (1,000,000 vs. 10,000,000 cycles). The Crouzet part also provides RoHS compliance and active product status.

Q: Is the lower mechanical life rating of the Crouzet part a concern?

A: Mechanical life suitability depends on application duty cycle. The 1,000,000-cycle rating of the Crouzet part is adequate for most industrial control and switching applications. Applications requiring higher cycle counts should be evaluated against specific operational requirements.

Q: Are there any temperature range limitations with the Crouzet substitute?

A: The Crouzet 83264043 operates from -20°C to 125°C, compared to the original -25°C to 105°C range. For applications operating below -20°C, the original specification should be verified. For applications above 105°C, the Crouzet part provides extended capability to 125°C.

Q: What is the significance of RoHS compliance on the Crouzet part?

A: RoHS compliance indicates the Crouzet part meets Restriction of Hazardous Substances regulations, restricting lead, cadmium, mercury, and other hazardous materials. This is relevant for applications subject to environmental regulations or customer requirements mandating RoHS-compliant components.

Q: Are there additional Crouzet part numbers that provide equivalent functionality?

A: The Crouzet 83264043 cross-references to V15T16-EZ200A06-K, V15H22-CZ300A02-K, V15T16-EZ200A02-K, and V15T16-CZ300A02-K within the Crouzet product family. These variants may offer different actuator styles or electrical configurations and should be evaluated for specific application requirements.