Westinghouse FB4020 Molded Case Circuit Breaker

Description:

The Westinghouse FB4020 is a molded case circuit breaker used in industrial electrical distribution and branch circuit protection systems. Commonly installed in switchboards, motor control centers, industrial automation panels, and manufacturing equipment requiring reliable four-pole overcurrent protection. Maintenance teams, OEMs, and electrical integrators use this breaker for replacement, retrofit upgrades, and maintenance of existing industrial electrical infrastructure.

Applications:

The Westinghouse FB4020 circuit breaker is commonly used in industrial and commercial electrical systems where dependable multi-pole branch circuit protection is required for power distribution and connected equipment. It is suitable for motor control systems, HVAC infrastructure, industrial processing equipment, automation systems, and switchgear assemblies operating in demanding industrial environments.

Technical Specifications:

• Brand: Westinghouse
• Part Number: FB4020
• Product Type: Molded Case Circuit Breaker
• Current Rating: 20 Amp
• Number of Poles: 4 Pole
• Breaker Series: FB Frame
• Protection Type: Thermal Magnetic
• Application: Branch circuit and equipment protection
• Mounting Style: Panel or switchboard mounted
• Function: Overcurrent and short-circuit protection
• Industrial Use: Power distribution and motor control systems
• Phase Compatibility: Three-phase systems with neutral protection
• Frequency Rating: 50/60 Hz
• Typical Installation: MCCs, switchgear, industrial control panels

Common Replacements:

• Eaton FB4020
• Siemens HFB4020
• Square D FA3420