AM51112C43N-A Equivalent & Substitute Parts

Part Overview

The AM51112C43N-A is a snap action SPDT switch manufactured by Panasonic Electric Works, designed for chassis mount applications with quick connect termination. This component operates at 11A AC and 125V, featuring a straight lever actuator and on-momentary switch function. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing maintenance, repair, and new design implementations where similar electrical and mechanical characteristics are required.

Substiute Parts

AM51112C43N-A

Panasonic Electric WorksIn Stock: 1068AM51112C43N-A Datasheet

Current PartRFQ

83264042

CrouzetIn Stock: 82483264042 Datasheet

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LS0851502F120C1A

E-SwitchIn Stock: 1016LS0851502F120C1A Datasheet

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TFS10ST2040C

C&KIn Stock: 1266TFS10ST2040C Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AM51112C43N-A are selected based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Circuit configuration: SPDT (Single Pole Double Throw)
• Switch function: On-Mom (On-Momentary)
• Actuator type: Lever, Straight
• Mounting type: Chassis Mount
• Termination style: Quick Connect - 0.187" (4.7mm)
• Operating position tolerance: Within 0.591" to 0.610" (15.0mm to 15.5mm)

Electrical Compatibility Considerations:

• Current rating: Minimum 10A AC (substitute parts rated 10A, 12A, or 15A AC are acceptable)
• Voltage rating: Minimum 125V AC (substitute parts rated 125V or 250V AC are acceptable)
• Operating temperature: Minimum -25°C to 85°C overlap required

The three substitute parts listed below meet these criteria while maintaining active product status and current availability.

Parameter Comparison

Engineering Selection Recommendations

LS0851502F120C1A (E-Switch) is the primary substitute for the AM51112C43N-A. This part maintains identical voltage rating (125V AC), exceeds current capacity (15A vs. 11A), and shares the same operating temperature minimum (-25°C). The part is ROHS3 compliant and REACH unaffected, meeting modern regulatory requirements. Mechanical life of 1,000,000 cycles is lower than the original but remains suitable for most applications.

TFS10ST2040C (C&K) is an alternative substitute with equivalent voltage and actuator specifications. This part offers superior mechanical life (10,000,000 cycles, matching the original) and extended low-temperature operation (-40°C). Current rating is 10A AC, which is marginally lower than the original 11A but remains within acceptable tolerance for most circuit designs. ROHS3 compliance and IP40 ingress protection are additional benefits.

83264042 (Crouzet) is suitable for applications requiring higher voltage tolerance (250V AC). This part exceeds the current requirement (12A vs. 11A) and extends the upper operating temperature to 125°C. However, mechanical life is reduced to 1,000,000 cycles. This substitute is recommended only when elevated voltage rating is a design requirement.

All three substitutes are currently active products with confirmed inventory availability and meet the core functional requirements of SPDT on-momentary operation with straight lever actuation and quick connect termination.

Frequently Asked Questions (FAQ)

Q: Can LS0851502F120C1A directly replace AM51112C43N-A in existing designs?

A: Yes. Both parts share identical circuit configuration (SPDT), switch function (On-Mom), actuator type (Lever, Straight), mounting type (Chassis Mount), and termination style (Quick Connect - 0.187"). Operating position variance is 0.008" (0.2mm), which is within typical mechanical tolerance. The higher current rating (15A vs. 11A) and voltage rating (125V) ensure compatibility.

Q: What is the primary difference between TFS10ST2040C and LS0851502F120C1A?

A: TFS10ST2040C offers superior mechanical life (10,000,000 cycles vs. 1,000,000 cycles) and extended low-temperature operation (-40°C vs. -25°C). Current rating is 10A AC versus 15A AC. Both maintain 125V AC voltage rating and identical mechanical interfaces. Selection depends on whether mechanical cycle durability or current headroom is prioritized.

Q: Why is 83264042 rated for 250V AC when the original is 125V AC?

A: Higher voltage rating indicates the component can safely operate at elevated voltages. A 250V-rated switch can be used in 125V applications without performance degradation. This substitute is beneficial for designs requiring future voltage flexibility or when component inventory consolidation across multiple voltage platforms is desired.

Q: Are all substitute parts RoHS compliant?

A: Yes. LS0851502F120C1A is ROHS3 compliant, TFS10ST2040C is ROHS3 compliant, and 83264042 is RoHS compliant. All three meet current environmental and regulatory standards.

Q: What is the impact of reduced mechanical life in LS0851502F120C1A compared to the original?

A: The original AM51112C43N-A specifies 10,000,000 mechanical cycles, while LS0851502F120C1A specifies 1,000,000 cycles. For applications with moderate actuation frequency (typical industrial control), 1,000,000 cycles represents approximately 10 years of operation at 100 actuations per day. Applications requiring higher cycle counts should consider TFS10ST2040C, which matches the original 10,000,000 cycle specification.

Q: Can these substitutes be used interchangeably in the same circuit?

A: Yes, provided the circuit design accommodates the parameter variations listed in the comparison table. All three substitutes maintain SPDT configuration, on-momentary function, and quick connect termination. Verify that the application circuit can tolerate the current and voltage rating differences before implementation.