Transformer circuit breaker MS132-T 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 on 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. In addition, MS132-T has a short-circuit indicator. The rotary handle can be directly locked 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. 1-phase feed-in blocks up to 25 mm² and phase connectors support the wiring of 1-phase transformers.
| Property | Value |
| Rated continuous current Iu: | 12 A |
| Connection type main circuit: | Screw connection |
| Number of poles: | 3 |
| Device design: | Complete device in housing |
| Position of connection for main circuit: | front |
| Protection class (IP): | IP20 |
| Overload release current setting: | 8 to 12 A |
| Setting range of the instantaneous short-circuit release: | 240 A |
| Rated voltage: | 690 V |
| Rated short-circuit breaking current Icu at 400 V, 50 Hz: | 100 kA |
| Suitable for DIN rail mounting: | yes |
| Design of the actuating element: | Rotary knob |
| With undervoltage release: | no |
| Integrated earth fault protection: | no |
| Motor drive integrated: | no |
| Motor drive optional: | no |
| With trip detector: | yes |
| Complete device with protection unit: | yes |
| DIN rail mounting optional: | yes |
