Westinghouse FB348MRL Molded Case Circuit Breaker

Description:

The Westinghouse FB348MRL 50A 600V 3P 18K is a molded case circuit breaker used in industrial electrical distribution and branch circuit protection systems. Commonly installed in motor control centers, switchboards, industrial automation panels, and manufacturing equipment requiring dependable three-phase 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 FB348MRL circuit breaker is commonly used in industrial and commercial electrical systems where reliable branch circuit protection is required for medium-amperage three-phase equipment and connected power systems. It is suitable for motor control systems, conveyor equipment, HVAC infrastructure, automation machinery, industrial processing systems, and electrical distribution panels operating on 600-volt electrical networks.

Technical Specifications:

• Brand: Westinghouse
• Part Number: FB348MRL
• Product Type: Molded Case Circuit Breaker
• Current Rating: 50 Amp
• Voltage Rating: 600 Volt
• Number of Poles: 3 Pole
• Interrupt Rating: 18kA
• Phase Compatibility: 3 Phase
• 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
• Frequency Rating: 50/60 Hz

Common Replacements:

• Eaton FB3050
• Siemens HFB3050
• Square D FA3450