Motor protection circuit breaker MMS-32S - current 1A MMS-32S 1A

Professional protection for electric motors in a compact housing

The MMS-32S motor circuit breaker is a reliable solution for the comprehensive protection of electric motors with a rated current up to 1A. The device has been designed for installers and end users who require effective protection against overload and short circuits in a compact form.

Operating parameters and application possibilities

The device operates in a wide voltage range of 230-690V, making it a universal solution for various types of electrical installations. The rated power at AC-3 and a voltage of 400V is 0.25 kW, allowing for the safe operation of smaller industrial motors and machine tools.

The overload trip setting range is adjustable within the 0.63-1A interval, enabling precise adjustment to the characteristics of a specific motor. The instantaneous short-circuit trip has a setting of 13A, ensuring an immediate response in the event of a dangerous short circuit.

Construction and protection system

The MMS-32S circuit breaker is equipped with a thermomagnetic tripping system, which effectively protects against the two most common causes of motor damage - overload (thermal protection) and short circuit (magnetic protection). The device features 3 poles and a screw connection for the main circuit, guaranteeing solid and durable electrical connections.

The IP20 protection rating provides basic resistance to finger contact and access by solid objects larger than 12.5mm. The design provides for fixed mounting, which eliminates the risk of accidental disconnection during machine operation.

Performance and operational safety

A key feature of the device is its rated short-circuit breaking capacity Icu of 100 kA at a voltage of 400V AC. This high value guarantees the safe interruption of even very large short-circuit currents, thereby protecting the entire installation from serious damage.

The circuit breaker meets the requirements of European standards regarding the safety of electrical devices, and its design has been adapted for long-term continuous operation at a rated current of 1A. Thanks to the precise regulation system, it is possible to optimally adjust the protection parameters to the characteristics of a specific electric drive.