Siemens 3WL1225-2EB32-1GA4-Z

The 3WL1225-2EB32-1GA4-Z is a withdrawable air circuit breaker from Siemens SENTRON 3WL series, frame size II, rated at 2500A and 690V AC for low voltage main power distribution. This 3WL1225-2EB32-1GA4-Z is fitted with electronic trip unit supporting adjustable LSIG protection including overload, short-circuit and earth fault protection, which protects busbars, transformers and heavy feeder circuits. The 3WL1225-2EB32-1GA4-Z adopts rear horizontal connection design and comes with integrated safety shutters and mechanical interlock, preventing accidental contact with live parts during racking in and out operation.

This 3WL1225-2EB32-1GA4-Z supports communication expansion modules for Modbus, enabling remote status monitoring, power metering and fault log upload to SCADA and energy management systems. The 3WL1225-2EB32-1GA4-Z includes spring charging operating mechanism, supporting local manual operation and remote electrical closing and tripping. Built-in diagnostic functions record trip events and fault codes, helping maintenance teams speed up troubleshooting after electrical faults. The Z suffix stands for custom optional accessories configured according to the order specification.

The 3WL1225-2EB32-1GA4-Z is widely used as main incoming or bus tie breaker in industrial substations, power plants, data centers and large commercial distribution switchboards. The SENTRON 3WL platform has been superseded by the newer 3WA series, and original production of this 3WL1225-2EB32-1GA4-Z is discontinued. Most available units are tested surplus spare parts for retrofit and emergency replacement of existing SIVACON and custom low voltage panels.