Motor starter switch MMS-32S - current 32A MMS-32S 32A

Motor starter switch MMS-32S – reliable motor protection

The MMS-32S motor starter switch is a device designed to effectively protect electric motors against overloads, short circuits and phase imbalance. This ensures not only operational safety but also extends the lifespan of connected devices. It is a key element in automation control circuits and electrical systems, both in professional and domestic applications.

Construction and application

The MMS-32S switch is a complete device in a housing, equipped with an integrated auxiliary contact and undervoltage release. The construction based on magnetic release method guarantees a quick response in case of failure. Designed to operate in AC networks with a voltage of up to 690V, with a rated current of 22-32A, it is ideal for protecting motors with a power of up to 15 kW (for AC-3 at Ue=400V). The connection of the main contacts is made using screw connections, which facilitates installation and ensures a secure electrical connection.

Key features and benefits

• Versatile application: Protection of electric motors against overloads, short circuits and phase imbalance.
• Integrated functions: Has a built-in auxiliary contact and undervoltage release – increases functionality without the need for additional elements.
• High short-circuit breaking capacity: Rated short-circuit breaking capacity Icu at 400 V is 11 kA, which ensures effective protection of the installation.
• Three-pole design (3P): Designed for operation in three-phase circuits.
• Wide rated voltage range: Possibility of operation in AC networks with a voltage of up to 690V.
• Phase failure sensitivity: Additional protection of the motor against damage caused by the absence of one of the supply phases.
• Durability: Both mechanical (10,000 operations) and electrical (10,000 operations) ensure long-lasting and reliable operation of the device.
• Compliance with standards: Meets the requirements of IEC60947-2(-4) standard, which guarantees safety and quality of the product.

The MMS-32S switch is a solid and reliable solution for installers and end-users looking for effective protection of their electric motors. Its compact dimensions (45 × 105 × 75 mm) and weight of 0.32 kg facilitate installation even in tight spaces.