Motor starter MPE25-32 004648014

Motor starter – reliable motor protection

The MPE25-32 motor starter is a device designed to protect electric motors from overload and short circuit. It provides comprehensive protection, combining the functions of a thermal and short-circuit breaker in one device. This is a key element of any electrical installation powering motors, guaranteeing their safe and reliable operation.

Protection and functionality

The starter's thermomagnetic design ensures a quick response to various types of failures. Phase failure sensitivity is an additional function that protects the motor from damage in the event of loss of one of the supply phases – a problematic phenomenon that can lead to serious consequences. The rated short-circuit breaking capacity of 50 kA at 400 V AC demonstrates high effectiveness in the event of a short circuit in the motor circuit.

The MPE25-32 starter allows for precise adjustment of parameters to the needs of a specific application. Overload release setting range from 25 to 32 A allows adaptation to the load characteristics, and the short-circuit release setting range set to 416 A provides effective protection against sudden current increases. The device is designed to operate in networks with a rated voltage from 400 to 690 V AC.

Mounting and application

The MPE25-32 is characterized by a fixed-mounted device construction, which facilitates its integration with existing installations. Frame terminals ensure a secure and durable connection of wires. The degree of protection IP20 indicates protection against contact, which is important for safety. The device is three-pole, which means it protects all three phases of the motor power supply.

The starter finds application in a wide range of industrial and commercial applications:

• Protection of pump motors
• Protection of fan motors
• Protection of conveyor motors
• Protection of other devices powered by electric motors

The rated operating power for AC-3 is 15 kW at 400 V, making it a suitable choice for medium-sized motors. The lack of an integrated auxiliary contact and undervoltage release should be taken into account when designing the control and protection system.