AM51166D43N-A Equivalent & Substitute Parts

Part Overview

The AM51166D43N-A is a snap-action switch manufactured by Panasonic Electric Works, configured as a SPST-NO (Single Pole Single Throw - Normally Open) 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 where continued sourcing of the original component is not feasible.

Substiute Parts

AM51166D43N-A

Panasonic Electric WorksIn Stock: 840AM51166D43N-A Datasheet

Current PartRFQ

83264827

CrouzetIn Stock: 122883264827 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AM51166D43N-A is determined by the following critical parameters:

Electrical Compatibility:

• Circuit configuration must remain SPST-NO
• Switch function must be Off-Mom (momentary operation)
• Current rating must meet or exceed 11A AC at the operating voltage
• Voltage rating must support 125V AC minimum operation

Mechanical Compatibility:

• Actuator type must be lever with roller mechanism
• Mounting type must be chassis mount
• Termination style must be quick connect 0.250" (6.3mm)
• Operating position and travel characteristics must be within acceptable mechanical envelope

Environmental & Lifecycle:

• Operating temperature range must encompass -25°C to 105°C
• Electrical life must support 100,000 cycles minimum
• Moisture sensitivity level MSL 1 is acceptable

The Crouzet 83264827 satisfies these substitution criteria through equivalent circuit configuration, compatible mechanical interface, and superior electrical ratings.

Parameter Comparison

Engineering Selection Recommendations

The Crouzet 83264827 is a functionally equivalent substitute for the obsolete AM51166D43N-A based on the following engineering criteria:

Electrical Equivalence: Both switches share identical SPST-NO circuit configuration and Off-Mom function. The Crouzet substitute provides superior electrical ratings (12A AC at 250V versus 11A AC at 125V), ensuring safe operation in the original application envelope.

Mechanical Compatibility: Identical actuator type (lever roller), mounting method (chassis mount), and termination style (quick connect 0.250") enable direct mechanical interchange. Operating position and travel parameters are within acceptable mechanical tolerance for chassis-mounted applications.

Product Availability: The Crouzet 83264827 is currently in active production with 1,144 units in stock, compared to the obsolete status of the original component. This ensures long-term sourcing reliability for maintenance and production requirements.

Compliance Status: The Crouzet substitute is RoHS Compliant and REACH Unaffected, meeting current regulatory requirements for electronic component procurement in regulated industries.

Operational Considerations: The substitute exhibits lower operating force (51gf versus 60gf) and tighter differential travel (0.016" versus 0.040"), which may result in slightly different tactile feedback and switching precision. The mechanical life rating of 1,000,000 cycles is lower than the original 10,000,000 cycles; applications requiring extended mechanical cycling should evaluate this parameter against actual duty cycle requirements.

Frequently Asked Questions (FAQ)

Q: Can the Crouzet 83264827 be used as a direct replacement for the AM51166D43N-A?

A: Yes. Both switches share identical circuit configuration (SPST-NO), switch function (Off-Mom), actuator type (lever roller), mounting method (chassis mount), and termination style (quick connect 0.250"). Mechanical envelope parameters are within acceptable tolerance for chassis-mounted applications.

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

A: The Crouzet substitute provides higher electrical ratings (12A AC at 250V versus 11A AC at 125V), extended temperature range (-20°C to 125°C versus -25°C to 105°C), and RoHS compliance. The substitute has lower operating force (51gf versus 60gf), tighter differential travel (0.016" versus 0.040"), and lower mechanical life rating (1,000,000 versus 10,000,000 cycles).

Q: Will the lower operating force of the Crouzet switch affect my application?

A: The 51gf operating force of the Crouzet substitute is lower than the 60gf of the original, resulting in easier actuation. This is acceptable for most applications but should be evaluated if precise actuation force is a design requirement.

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

A: The Crouzet substitute is rated for 1,000,000 mechanical cycles versus 10,000,000 for the original. For applications with typical duty cycles (manual actuation or infrequent switching), this rating is adequate. Applications requiring continuous or high-frequency switching should evaluate actual cycle requirements against this specification.

Q: Are there any compliance or regulatory differences?

A: The Crouzet 83264827 is RoHS Compliant and REACH Unaffected, meeting current regulatory requirements. The original AM51166D43N-A compliance status is not specified. For regulated industries, the Crouzet substitute provides documented compliance assurance.

Q: Can I use the Crouzet switch in a 125V AC circuit?

A: Yes. The Crouzet 83264827 is rated for 250V AC, which exceeds the 125V AC requirement of the original application. The switch will operate safely at 125V AC.

Q: What is the impact of the tighter differential travel on switch performance?

A: Differential travel (0.016" for Crouzet versus 0.040" for the original) affects the hysteresis between switch closure and opening. The tighter differential of the Crouzet substitute results in more precise switching characteristics, which is generally beneficial for control applications.