ABB Transformer circuit breaker

The MS132-T transformer protection switch with thermal and electromagnetic protection represents a compact and powerful series with a high short-circuit breaking capacity for transformer protection up to 25 A, featuring a module width of 45 mm. In this device, the primary side transformer rated current is thermally monitored by adjusting the current scale. The short-circuit tripping occurs when the device's rated current reaches 20 times its nominal value. The temperature-compensated device has a rotary handle operation with a clear switching position indicator I/TRIP/0. Additionally, the MS132-T features a short-circuit indicator. The rotary handle can be directly locked in the 0 position using a padlock. Auxiliary, signal, and short-circuit alarm contacts, as well as undervoltage and operating current triggers, can be mounted without tools. Single-phase feed blocks up to 25 mm² and phase connectors support the wiring of single-phase transformers.