Motor starter MPE25-4.0 004648008

Motor starter for reliable motor protection

This three-phase motor starter MPE25-4.0 by ETI is a key element in protecting electrical installations powering motors. It provides comprehensive protection against overload, short circuit and phase asymmetry, which translates to a longer lifespan of connected devices and minimizes the risk of failure. The device's design, intended for permanent mounting, guarantees stability and reliable operation in demanding industrial and commercial conditions.

Functionality and application

The MPE25-4.0 starter is designed to start electric motors and protect them. Thanks to the overload release setting range of 2.5…4 A, it is ideal for applications requiring precise adjustment to the load characteristics. The possibility of using it as a main or emergency switch further increases its versatility. The use of a thermal-magnetic release method ensures a quick and effective response to irregularities in the circuit.

• Phase failure protection: This function protects the motor from damage in the event of loss of one of the supply phases – a common cause of failure.
• Thermal protection: Protects the motor from overheating caused by overload, which extends its lifespan.
• High short-circuit capacity: The rated short-circuit breaking capacity of 100 kA at 400 V AC guarantees the safety of the installation even in the event of high short-circuit currents.
• Wide range of operating voltages: Operation in the range of 400…690 V allows the starter to be used in various electrical installations.
• Frame terminals: Allow easy and secure connection of wires, facilitating installation and maintenance.

Parameters for professionals

The MPE25-4.0 is characterized by a solid construction and precise workmanship. The rated continuous current (Iu) is 4 A, and the rated operating power for AC-3 at 230 V is 0.75 kW, and at 400 V – 1.5 kW. The degree of protection IP20 indicates that the device can be used in dry indoor environments. It is worth noting that the short-circuit release setting is fixed at 52 A – this ensures appropriate selectivity with other protective elements of the installation. The device is three-pole (3P) and does not have integrated auxiliary contacts or undervoltage release.