Siemens LGB3B050B — 50A 3-Pole 600V Bolt-On Molded Case Circuit Breaker (MCCB)

The Siemens LGB3B050B is a 50-amp, 3-pole, 600V thermal magnetic molded case circuit breaker (MCCB) with bolt-on mounting. Part of Siemens' LGB frame series, this breaker provides reliable three-phase overcurrent protection for industrial and commercial distribution systems requiring robust performance at up to 600VAC.

Key Specifications

• Part Number: LGB3B050B
• Brand: Siemens
• Amperage: 50A
• Poles: 3-Pole
• Voltage Rating: 600VAC
• Frame: LGB Frame
• Mounting: Bolt-On
• Trip Type: Thermal Magnetic
• Standards: UL Listed, CSA Certified

Features & Benefits

• Bolt-on mounting for a secure, vibration-resistant installation in Siemens panelboard enclosures
• Thermal magnetic trip provides accurate overload and short-circuit protection
• 3-pole configuration for complete three-phase protection at 600VAC
• LGB frame construction engineered for reliable performance in industrial environments
• Siemens quality manufacturing for long service life and consistent trip accuracy

Common Applications

The LGB3B050B is used as a feeder or branch circuit breaker in industrial plants, manufacturing facilities, and commercial buildings requiring 50A three-phase overcurrent protection at 600V in bolt-on panelboard configurations.