ER4X-40N6SR

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Disconnect switch components have been used to safely separate electrical circuits for many years. Among these components, the ER4X-40N6SR is one of the most reliable and efficient. It is an industrial-grade single-pole self-resetting, over-current protection switch which provides a simple, cost-effective solution to over-current protection.

The ER4X-40N6SR is designed to detect and prevent over-current conditions in power supply circuits. The switch will trip earlier than most other conventional protection devices, thereby preventing a surge or spike in current which might damage or destroy associated equipment. For this reason, it is ideal for applications such as power distribution units, monitoring systems, server and telecom equipment, process control systems, as well as other complex and potentially hazardous applications.

The construction of the ER4X-40N6SR is robust and compliant to all applicable safety standards, making it one of the safest and most reliable self-resetting, over-current protection switches available. Its single-pole design also makes the switch easy to install, while its built-in self-test facility ensures it is always working properly.

The working principle of the ER4X-40N6SR is based on a thermal-mechanical technology. The device features two differently sized bimetal discs made from an alloy of copper and nickel. The discs are connected by a metal bridging member. When the current exceeds the maximum rating of the switch, the larger of the two discs heats up, which in turn deforms the metal bridging member, causing the switch to trip.

When the over-current condition has been detected and the device has tripped, the bimetallic discs cool rapidly, allowing the switch to reset itself automatically. This feature significantly reduces the need for costly manual switching operations, and makes it ideal for applications where frequent, or even continuous operation is required.

The ER4X-40N6SR is a robust, reliable and cost-effective over-current protection switch, and its single-pole, self-resetting design makes it ideal for a wide range of industrial, commercial and domestic applications.

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