SIEMENS 3VL5763-2AA36-0AA0 SENTRON VL630H 3-POLE MOLDED CASE CIRCUIT BREAKER (MCCB)

SIEMENS 3VL5763-2AA36-0AA0 is a 3-pole high breaking capacity MCCB from Siemens Sentron VL630H series, frame size 630A, configured with 500A rated electronic trip unit, Icu=70kA@415V AC, operational voltage up to 690V AC, designed for low voltage main switchboard and feeder protection in marine and industrial power distribution systems. The 3-pole circuit breaker provides overload, phase imbalance and short-circuit protection for generators, large motor feeders and main power busbars. The 3-pole circuit breaker supports optional accessories including auxiliary contact, fault alarm contact, shunt trip coil, undervoltage release and motor operator, which can transmit breaker status and trip signals to ship automation and alarm systems. The 3-pole circuit breaker adopts screw terminal connection for cable or busbar wiring, and requires matching ETU electronic trip unit for protection function. The 3-pole circuit breaker can visually display trip state after fault occurrence and stores fault records for maintenance diagnosis.

SIEMENS 3VL5763-2AA36-0AA0 is IP40 front protection when installed inside switchboard compartment. The power distribution MCCB complies with IEC 60947-2 standard, high mechanical and electrical endurance performance. The power distribution MCCB is built to withstand vibration, humidity and temperature fluctuation onboard vessels; marine type approved versions are available for shipboard electrical panel applications. The power distribution MCCB is a discontinued legacy model, and its replacement series is Siemens 3VA molded case circuit breaker.

SIEMENS 3VL5763-2AA36-0AA0 is widely deployed on cargo ships, tankers and offshore platforms for main switchboard, generator feeder and large auxiliary motor branch protection systems. The industrial spare part can replace faulty MCCBs to restore low voltage power distribution overload and short-circuit protection rapidly. The industrial spare part matches original mechanical mounting dimensions and busbar/wiring specifications for direct cabinet installation replacement. The industrial spare part has clear part marking for fast identification and stock management. The industrial spare part reduces vessel downtime during switchboard overhaul and marine survey inspection.