Westinghouse NP28328-F Circuit Breaker Instantaneous Magnetic Trip

Description:

The Westinghouse NP28328-F Circuit Breaker Instantaneous Magnetic Trip 400A is used in industrial power distribution and motor protection systems. Commonly installed in switchgear assemblies, motor control centers, manufacturing equipment, and industrial distribution panels. Maintenance teams and system integrators use this circuit breaker for replacement, retrofit projects, preventive maintenance, and high-capacity electrical protection upgrades.

Applications:

The Westinghouse NP28328-F circuit breaker is commonly used in manufacturing facilities, industrial automation systems, HVAC equipment, power distribution systems, and motor control applications where reliable instantaneous magnetic trip protection and dependable fault interruption are critical for safe and continuous electrical operation.

Technical Specifications:

• Brand: Westinghouse
• Part Number: NP28328-F
• Product Type: Circuit Breaker
• Trip Type: Instantaneous Magnetic Trip
• Current Rating: 400 Amp
• Protection Type: Magnetic Circuit Protection
• Frame Type: Molded Case Circuit Breaker
• Mounting Type: Panel / Fixed Mount
• Application: Motor and Power Distribution Protection
• Frequency Rating: 50/60 Hz
• Phase Compatibility: Three Phase Systems
• Industrial Duty Rated: Yes
• Compatible Installations: Switchgear, MCCs, and Distribution Panels
• Terminal Type: Mechanical Lug Connections
• Operating Function: Short Circuit and Fault Protection
• Typical Use: Industrial Power and Motor Protection Applications

Common Replacements:

• Eaton HMCP400U4C
• Allen-Bradley 140M-C2E-B400
• Square D FA34400