NH2 fuse disconnect switch 3P 400A 690VAC busbars 60 mm supply/drain screw M10 LT253

Fuse disconnect switch – reliable installation protection

This three-pole fuse disconnect switch, designed to work with NH2 fuses with a current of 400A, is a key element of electrical protection. It provides effective protection against the effects of short circuits and overloads in installations with a voltage of up to 690VAC. Screw M10 power/outlet connection and 60mm busbars facilitate integration with existing systems.

Construction and application

This disconnect switch finds application in electrical switchboards, control cabinets and other installations requiring reliable protection against overloads and short circuits. Its solid construction and high quality workmanship guarantee long-lasting and trouble-free operation. Designed for busbar mounting, which greatly simplifies the installation process. It can function as a main switch in the circuit.

Key features and benefits

• High resistance to surge currents: Rated short-circuit current Iq is as high as 80kA, providing effective protection even in the event of sudden current surges.
• Versatility: Compatible with NH2 fuse links of various current values (up to 400A), allowing adaptation to specific installation needs.
• Solid connections: Power/outlet on M10 screw and 60mm busbars ensure secure and stable cable connections.
• Safety: IP3X protection degree protects against access to hazardous live parts.
• Mechanical durability: Designed for a large number of switching cycles (800 mechanical cycles).
• Compliance with standards: Meets the requirements of IEC 60947-3 and EN 60947-3 standards, confirming its safety and reliability.

The disconnect switch is characterized by a rated operating current of 400A, and its maximum AC operating voltage is 690V. The rated insulation voltage is 1000V, which ensures a high level of safety. It is designed to work with NH2 type fuse links and has an IP3X degree of protection. Its dimensions are 210 mm wide, 130 mm deep and 306 mm high.

This disconnect switch is made of high-quality materials, which translates into its durability and resistance to environmental conditions. Its compact dimensions allow for easy integration even in limited space. This makes it an optimal solution for both professional installers and end-users looking for reliable electrical protection.