AM1734F Snap Action Switch - Equivalent & Substitute Parts

Part Overview

The AM1734F is a snap action switch manufactured by Panasonic Electric Works, classified as SPDT (Single Pole Double Throw) with a 10A AC / 500mA DC rating at 125V. This component features a lever with roller actuator, chassis mount configuration, and screw terminal termination. The product is currently obsolete, making equivalent substitutes necessary for ongoing maintenance and repair applications where this switch was originally specified.

Key Parameters

Parameter	AM1734F Value
Manufacturer	Panasonic Electric Works
Circuit Configuration	SPDT
Switch Function	On-Mom
Current Rating (AC)	10A
Current Rating (DC)	500mA
Voltage Rating (AC)	125V
Voltage Rating (DC)	125V
Actuator Type	Lever, Roller
Mounting Type	Chassis Mount
Termination Style	Screw Terminal
Operating Temperature	-25°C to 80°C
Electrical Life	500,000 Cycles
Mechanical Life	5,000,000 Cycles
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the AM1734F is determined by the following critical parameters:

Mandatory Matching Criteria:

Circuit configuration: SPDT
Switch function: On-Mom
Voltage rating: 125V AC minimum
Mounting type: Chassis Mount
Termination style: Screw Terminal
Actuator type: Lever with Roller

Current Rating Consideration: The AM1734F operates at 10A AC / 500mA DC. Substitute parts with equal or higher current ratings are acceptable for direct replacement. Parts rated at 20A AC exceed the original specification but remain compatible for this application.

Mechanical and Electrical Life: Substitute parts must maintain minimum electrical life of 500,000 cycles and mechanical life of 1,000,000 cycles to ensure equivalent operational reliability.

Temperature Operating Range: The AM1734F operates from -25°C to 80°C. Substitutes with equal or extended temperature ranges are acceptable.

Parameter Comparison

Part Number	Manufacturer	Circuit	Function	Current (AC)	Current (DC)	Voltage (AC)	Voltage (DC)	Actuator	Mount Type	Termination	Temp Range	Status
AM1734F	Panasonic	SPDT	On-Mom	10A	500mA	125V	125V	Lever, Roller	Chassis	Screw	-25 to 80°C	Obsolete
A-20GV22-B	Omron	SPDT	On-Mom	20A	6A	125V	30V	Lever, Roller	Chassis	Screw	-25 to 80°C	Active
BA-2RV22-A2	Honeywell	SPDT	On-Mom	20A	500mA	125V	125V	Lever, Roller	Chassis	Screw	-55 to 85°C	Active
BA-2RB-A4	Honeywell	SPDT	On-Mom	20A	500mA	125V	125V	Overtravel Plunger	Chassis	Screw	-55 to 85°C	Active

Engineering Selection Recommendations

Primary Substitute: A-20GV22-B (Omron Automation and Safety)

The A-20GV22-B is the closest functional equivalent to the AM1734F. It maintains identical circuit configuration (SPDT), switch function (On-Mom), voltage rating (125V AC), mounting type (Chassis Mount), termination style (Screw Terminal), and actuator type (Lever, Roller). The part is currently in active production status with ROHS3 compliance and REACH affected designation. Current rating is upgraded to 20A AC / 6A DC, providing enhanced capacity for the same application envelope. Operating temperature range matches the original specification (-25°C to 80°C).

Secondary Substitute: BA-2RV22-A2 (Honeywell Sensing and Productivity Solutions)

The BA-2RV22-A2 provides an alternative from an established manufacturer with active product status and RoHS compliance. This part matches all critical parameters including SPDT circuit, On-Mom function, 125V AC/DC voltage, Chassis Mount configuration, Screw Terminal termination, and Lever Roller actuator. Current rating is 20A AC / 500mA DC, matching the original DC specification exactly. Operating temperature range extends to -55°C to 85°C, exceeding the original specification. Mechanical life reaches 20,000,000 cycles, significantly surpassing the original 5,000,000 cycle rating.

Tertiary Substitute: BA-2RB-A4 (Honeywell Sensing and Productivity Solutions)

The BA-2RB-A4 is functionally compatible with identical electrical specifications (SPDT, On-Mom, 125V AC/DC, 20A AC / 500mA DC). The primary distinction is the actuator type (Overtravel Plunger versus Lever Roller), which may affect mechanical interface compatibility depending on the original equipment design. This part is active production status with RoHS compliance and extended temperature range (-55°C to 85°C). Mechanical life is 20,000,000 cycles.

Non-Recommended Substitutes:

The 6BS1-B (Honeywell) features Off-Mom-Mom switch function, which is incompatible with the On-Mom specification of the AM1734F. The A-20G-B, A-20GD-B, and A-20GQ21-B have mounting type or actuator type variations that deviate from the original specification. The BA-2R-A2 and BA-2RB-A2 feature different mounting configurations (Panel Mount for BA-2RB-A2) that may not align with the original chassis mount requirement.

Frequently Asked Questions (FAQ)

Q: Can the A-20GV22-B directly replace the AM1734F in existing equipment?

A: Yes. The A-20GV22-B maintains identical circuit configuration (SPDT), switch function (On-Mom), voltage rating (125V AC), mounting type (Chassis Mount), termination style (Screw Terminal), and actuator type (Lever, Roller). The upgraded current rating (20A AC versus 10A AC) is compatible with applications originally designed for the AM1734F. Physical dimensions and terminal spacing should be verified against the original equipment schematic before installation.

Q: What is the difference between the A-20GV22-B and BA-2RV22-A2?

A: Both parts are functionally equivalent with SPDT circuit, On-Mom function, 125V AC voltage, Chassis Mount, Screw Terminal, and Lever Roller actuator. The primary differences are manufacturer (Omron versus Honeywell), current rating (A-20GV22-B: 20A AC / 6A DC; BA-2RV22-A2: 20A AC / 500mA DC), and operating temperature range (A-20GV22-B: -25 to 80°C; BA-2RV22-A2: -55 to 85°C). The BA-2RV22-A2 matches the original 500mA DC specification exactly and provides extended temperature capability.

Q: Why is the BA-2RB-A4 listed as a substitute if the actuator type differs?

A: The BA-2RB-A4 maintains all critical electrical parameters (SPDT, On-Mom, 125V AC/DC, 20A AC / 500mA DC, Screw Terminal, Chassis Mount). The actuator type difference (Overtravel Plunger versus Lever Roller) affects mechanical interface compatibility. This part is listed as a potential substitute only if the original equipment design can accommodate the different actuator geometry. Physical verification is required before substitution.

Q: Is the 6BS1-B compatible with the AM1734F?

A: No. The 6BS1-B features Off-Mom-Mom switch function, which is incompatible with the AM1734F's On-Mom specification. Switch function determines the electrical behavior and cannot be interchanged without circuit redesign.

Q: What compliance certifications should I verify for substitute parts?

A: The A-20GV22-B carries ROHS3 compliance and REACH affected designation. The BA-2RV22-A2 and BA-2RB-A4 carry RoHS compliance and REACH unaffected or unaffected designations. Verify that the selected substitute meets the compliance requirements of your target application and regulatory jurisdiction before procurement.

Q: Can I use a substitute part with a higher current rating?

A: Yes. The AM1734F is rated at 10A AC / 500mA DC. Substitute parts with 20A AC / 6A DC or 20A AC / 500mA DC ratings are acceptable for direct replacement in applications originally designed for the lower-rated part. The higher current capacity does not affect compatibility or performance in lower-current applications.

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