Westinghouse FB4100L Shunt Trip Circuit Breaker

Description:

The Westinghouse FB4100L 4 Pole 100 Amp Shunt Trip Circuit Breaker is a molded case circuit breaker used in industrial electrical distribution and emergency disconnect systems. Commonly installed in motor control centers, switchboards, industrial automation panels, and critical power systems requiring remote trip capability and four-pole overcurrent protection. Maintenance teams, OEMs, and electrical integrators use this breaker for replacement, retrofit upgrades, and maintenance of industrial electrical safety and power distribution infrastructure.

Applications:

The Westinghouse FB4100L shunt trip circuit breaker is commonly used in industrial and commercial electrical systems where remote emergency shutdown and branch circuit protection are required. It is suitable for fire safety systems, motor control systems, conveyor equipment, HVAC infrastructure, automation machinery, industrial processing equipment, and electrical distribution panels utilizing remote disconnect functionality.

Technical Specifications:

• Brand: Westinghouse
• Part Number: FB4100L
• Product Type: Shunt Trip Molded Case Circuit Breaker
• Current Rating: 100 Amp
• Number of Poles: 4 Pole
• Breaker Series: FB Frame
• Feature: Shunt Trip
• Protection Type: Thermal Magnetic
• Application: Branch circuit protection and remote emergency disconnect
• Mounting Style: Panel or switchboard mounted
• Function: Overcurrent, short-circuit, and remote trip protection
• Industrial Use: Power distribution and safety shutdown systems
• Phase Compatibility: Three-phase systems with neutral protection
• Frequency Rating: 50/60 Hz
• Typical Installation: MCCs, switchgear, industrial control panels

Common Replacements:

• Eaton FB4100L
• Siemens HFB4100
• Square D FA36100