NH1 3P 250A 690VAC fuse disconnect switch, 185 mm busbars, prism terminal V LVSR1VPVK4

Strip fuse disconnect – reliable installation protection

The NH1 strip fuse disconnect is a key element of any electrical installation, providing effective protection against the effects of short circuits and overloads. The 3P model with a rated current of 250A and a voltage of 690VAC, with busbars 185 mm wide and V-type prismatic terminals, is suitable for both industrial applications and public buildings. Its solid construction and high quality of workmanship guarantee long-term and trouble-free operation.

Construction and application

This disconnect is designed to work with NH1 type fuse links, ensuring compatibility with a wide range of available protection devices. The three-pole design allows for comprehensive protection of three-phase circuits. V-type prismatic terminals facilitate the connection of wires with a cross-section of up to 300mm², providing a secure and stable connection. The possibility of mounting on a rail allows for easy integration with existing switchboards.

Advantages and benefits for the installer and user

• High reliability: Provides effective protection against overloads and short circuits, minimizing the risk of failure and downtime in the installation.
• Easy installation: Rail mounting and intuitive V-type prismatic terminals significantly speed up the installation process, saving time and labor costs.
• Versatility: Compatibility with NH1 fuse links and a wide range of operating voltages (up to 690VAC) make the disconnect applicable in many different installations.
• Safety: Provides safe isolation of the circuit in the event of a failure or the need to perform maintenance work.
• Durability: Made of high-quality materials, resistant to mechanical damage and weather conditions, which translates into a long service life of the device.
• Transparency: The lack of a trip indicator does not negatively affect the functionality of the device – its task is to disconnect the circuit when permissible parameters are exceeded.

This disconnect is particularly recommended for use in photovoltaic (PV) installations, where high reliability and safety are required. Thanks to this solution, solar panels and other elements of the PV system can be effectively protected against damage caused by overvoltage or short circuits.