WESTINGHOUSE HMA34000TM 3 Pole Type MA HMA 2000-4000 Trip Unit 457D455G26

Description:

The Westinghouse 457D455G26 Trip Unit is used in industrial circuit breaker protection and power distribution systems. Commonly installed in HMA series molded case circuit breakers, switchgear assemblies, and heavy-duty electrical distribution equipment in industrial facilities. Maintenance teams, OEM operators, and system integrators use this Westinghouse trip unit for breaker maintenance, overload protection replacement, and electrical retrofit projects.

Applications:

The Westinghouse 457D455G26 Trip Unit is designed for industrial electrical protection applications requiring adjustable overload and short-circuit interruption control. Common applications include motor control centers, industrial switchgear systems, heavy machinery electrical panels, and large-scale power distribution equipment used in manufacturing plants, utility operations, and processing facilities.

Technical Specifications:

• Manufacturer Part Number (MPN): 457D455G26
• Product Type: Trip Unit
• Brand: Westinghouse
• Breaker Type Compatibility: Type MA HMA
• Pole Configuration: 3 Pole
• Ampere Range: 2000-4000A
• Function: Overload and short-circuit protection control
• Application Type: Industrial circuit breaker systems
• Mounting Type: Breaker-mounted protection assembly
• Industrial Compatibility: HMA breaker systems, switchgear, MCC equipment
• Construction Type: Industrial-duty protection component

Common Replacements:

• Eaton Digitrip RMS 1150 Trip Unit
• Westinghouse 457D455G28 Trip Unit
• Cutler-Hammer 1232C90G02 Trip Unit