NHFS2B

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Disconnect switch components such as NHFS2B are designed to provide reliable service and safety of operations. These components are mainly used for the primary disconnection of electrical equipment, motor system overloading, overload protection, emergency stop, and ground fault protection.

NHFS2B is a two-pole fire safety switch with current rating of 480A in UL98 application. It is suitable for outdoor use as it is both dust and waterproof. The housing is constructed from UL94V-0 flame retardant thermoplastic and is rated for IP67 requirements. Its has two switches which are integrated together with one being a manual switch and the other one an emergency stop button. This design ensures that the manual switch is always open, thus providing extra safety when disengaging from the electrical equipment.]

The working principle of the NHFS2B is that when the manual switch is turned to the "off" position, it will simultaneously cut off electricity to two poles, thus preventing the overload of the system. When the emergency stop button is pressed, it will cut off electricity to both of the poles instantly, and it cannot be reset until the manual switch is opened and rearmed. Furthermore, the switch also has a ground fault interrupter which will cut off power instantly if the circuit is grounded.

In conclusion, NHFS2B is a two-pole fire safety switch that provides reliable service and safety of operations. It is suitable for outdoor applications as it is dust and waterproof. The switch has two switches, the manual switch and the emergency stop button, which can be used to cut off electricity to two poles and ensure safety when disconnecting from electrical equipment. Moreover, the switch also has a ground fault interrupter which will cut off power instantly if the circuit is grounded.

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