Power switch 3-pole 800A selective NZMN4-VE800 265769

Power switch – reliable protection of electrical installations

This three-pole power switch with a rated current of 800A is a solid solution for protecting electrical installations in demanding conditions. Designed by Eaton, it provides effective protection against overloads and short circuits, guaranteeing safety and continuity of power supply. Its selective characteristic allows for coordinated operation with other protective elements in the network, minimizing the risk of unnecessary shutdown of the entire installation in the event of a failure on its fragment.

Functionality and application

The NZMN4-VE800 switch is designed for permanent installation and is characterized by its versatility – it will work both in industrial applications and in public buildings. Thanks to the wide range of overload (400…800A) and short-circuit (1600…9600A) release settings, it can be precisely adapted to the specifics of the protected installation. The lever design ensures convenient operation, and the screw connection guarantees reliable and durable electrical connections. The rated short-circuit breaking capacity of 37kA at 400V, 50Hz provides a high level of safety.

Key features and benefits

• Wide range of settings: Possibility of precise adjustment of the switch parameters to the needs of a specific installation.
• Selectivity: Ensures coordinated operation with other protection devices, minimizing downtime.
• High short-circuit breaking capacity: Guarantees effective protection against the effects of short circuits.
• Solid construction: Device designed to operate in harsh industrial conditions.
• Installation flexibility: Possibility of expansion with additional accessories, such as remote drives or auxiliary contacts.
• Accessory compatibility: Common accessories with LZM/LN and NZM/N series facilitate servicing and reduce storage costs.
• Adjustable settings: Possibility of adjusting the time delay tr (2-20s at 6xIr) and the time delay tsd (steps: 0, 20, 60, 100, 200, 300, 500, 750, 1000ms) for optimal protection.
• i2t-constant function: Switchable function for additional control over the switching characteristic.

Thanks to this, the switch not only protects the installation from damage, but also helps maintain the continuity of production processes and minimize losses caused by failures. It is an investment in the safety and reliability of the electrical system.