Motor starter switch MPX3 32S 2.5-4.0A standard breaking capacity 417307

Motor protection circuit breaker MPX3 – reliable motor protection

The MPX3 motor protection circuit breaker is a device designed to protect electric motors from overload and short circuit. It provides effective circuit protection, and its compact dimensions (94 mm high, 45 mm wide and 75 mm deep) facilitate mounting in switchboards. The device's fixed construction guarantees stability and long-term operation.

Functionality and application

The MPX3 32S circuit breaker with an overload release setting range of 2.5…4 A is ideal for protecting motors up to 0.55 kW at 230 V AC and up to 1.1 kW at 400 V AC. The thermal-magnetic tripping method ensures a quick response to failures, minimizing the risk of damage to connected devices. An integrated auxiliary contact and undervoltage release further increase the functionality and safety of the installation. The lack of phase failure sensitivity allows for flexible use in various electrical network configurations.

Key features and benefits

• High breaking capacity: Rated short-circuit breaking capacity Icu of 100 kA at 400 V AC guarantees effective protection in the event of a short circuit.
• Thermal protection: Built-in thermal protection protects the motor from overheating, which extends its service life.
• Current adjustment: The ability to adjust the overload release setting range (2.5…4 A) allows the circuit breaker to be adapted to specific application needs.
• Solid construction: The device made of high-quality materials ensures durability and reliable operation even in harsh working conditions (IP20 protection degree).
• Easy installation: Frame terminals facilitate wire connection, and the lever actuator provides convenient operation.
• Versatility: The three-pole design means that the circuit breaker can be used in various types of three-phase installations.
• Integrated functions: Built-in auxiliary contact and undervoltage release increase the functionality of the device without the need for additional components.