ER3R-80N3PB

As the disconnect switch components go, the ER3R-80N3PB has a unique design and application field due to its work principle that sets it apart from other components. In this article, we’ll be discussing the application field and working principle of this particular component.

ER3R-80N3PB Application Field

The ER3R-80N3PB is a miniature three-phase plunger line open disconnect switch. It’s suitable for use in main back-up applications for Ring Main Unit systems in medium voltage up to 12KV. Its advantages include a minimum of wiring, no enclosure needed, it’s easy to commission, its simple arcing for excellent wear, and it’s suitable for use within tight spaces.

ER3R-80N3PB Working Principle

The ER3R-80N3PB is comprised of a plunger that is operated by an electric spring return mechanism and has an adjustable contact force. This allows it to reliably perform the breaking and making operation of a circuit. It then stores its position during a short-term interruption. The plunger has been designed to prevent any sideway displacement which assure the reliable breaking and making operations.

The ER3R-80N3PB also features an opening and closing device. This device has a mechanical device on one side and another device that remains stationary on the other side. Every operation is provided with a hand wheel, which allows it to alternately disconnect and connect the terminals. When the switch is in the closed state, the spring returns to its original position. This ensures that the current flow is continuous and the switch does not open. In addition, this switch also has a tunnel to protect against accidental touches.

The ER3R-80N3PB also contains a contactor that enables the switch to operate as a safety switch. This contactor acts as an emergency current interruption and trips when the circuit is overloaded. When an overload is detected, the controller is powered up, and the plunger is opened. This causes the contactor to trip, thus disconnecting the electrical circuit.

Conclusion

The ER3R-80N3PB is a disconnect switch component that has a unique design and application field due to its working principle. It is suitable for use in main back-up applications and for Ring Main Unit systems in medium voltage up to 12KV. It features a plunger operated by an electric spring return mechanism, an opening and closing device, and a contactor for overload protection. All of these features allow it to perform the breaking and making operation of a circuit with reliability and ease.