3-pole power switch 100A motor protection NZMN1-M100 265722

Power switch for motor and installation protection

This three-pole power switch with a rated current of 100A is a reliable solution for protecting electrical circuits, especially those powering motors. Equipped with a thermal-magnetic trip unit, it effectively protects against the effects of overloads and short circuits, ensuring the safety of the installation and connected devices. The device's design allows for permanent mounting, making it easy to integrate with existing systems.

Characteristics and application

The NZMN1-M100 switch belongs to the NZM..-M series from Eaton, known for its compact size and flexible mounting. The use of a thermal-magnetic trip unit makes it ideal for motor protection – characteristic C allows it to react more slowly to short current surges, therefore tolerating the starting of devices with a motor well. Additional phase failure sensitivity increases work safety, minimizing the risk of damage caused by the absence of one of the phases. The rated operating power for AC-3 is 55 kW at 400V and 30 kW at 230V.

Key features and benefits

• High short-circuit breaking capacity: The rated short-circuit breaking capacity Icu is as high as 35 kA at 400 V AC, which guarantees effective protection in the event of serious overvoltages.
• Wide range of overload trip unit adjustment: Adjustment in the range of 80-100A allows precise adjustment of the switch's sensitivity to the specifics of the protected circuit.
• Thermal protection: Built-in thermal protection protects against overheating of the installation and devices.
• Phase failure sensitivity: This function detects the absence of one of the phases and disconnects the circuit, preventing damage to the motor.
• Compact dimensions: Height 145 mm, width 90 mm and depth 88 mm make it easy to mount even in tight spaces.
• Durable construction: The device is made of high-quality materials, which ensures long life and reliable operation.
• Versatility: NZM series switches are compatible with a wide range of Eaton accessories (remote drives, additional trip units, auxiliary contacts), which increases system flexibility.
• Power losses: Low power losses of 23.9 W translate into energy savings during operation.

This switch finds application both in industrial installations and in public buildings and in single-family homes – everywhere where reliable protection of motors and electrical circuits against overloads and short circuits is required.