Transformer circuit breaker MS132-KT in screwless push-in spring connection technology with thermal and electromagnetic protection represents the compact and powerful series with high short-circuit breaking capacity for transformer protection up to 25 A with a module width of 45 mm. With this device, the primary-side transformer rated current is thermally monitored by setting the current scale. The short-circuit is triggered when 20 times the device rated current occurs. The temperature-compensated device has a rotary handle operation with a clear switch position indicator I/TRIP/0. MS132-KT also has a short-circuit indicator. The rotary handle can be locked directly in the 0 position using a padlock. Auxiliary, signal and short-circuit signaling contacts as well as undervoltage and shunt current releases can be installed without tools. Push-in spring variants are available for auxiliary and signal contacts; these also fit the transformer circuit breakers with screw technology.
The push-in spring connection terminals allow tool-free and time-saving insertion of the connecting cables for rigid wires and stranded wires with wire end ferrules; stranded wires without wire end ferrules can also be connected. There is no need to readjust the connections later.