Electrical Components for Solar PV, Battery Energy Storage

Power Relays for Circuit Control
Power relays open or close a circuit by using an electromagnetic coil for seamless power flow. These cost-efficient relays are manufactured with an armature, spring, and one or several contacts. If the relay is meant to be normally open (NO), when power is applied the electromagnet attracts the armature. It is pulled in the coil’s direction until it reaches a contact, resulting in closing the circuit. Similarly, if the relay is meant to be normally closed (NC), the electromagnetic coil pulls the armature away from the contact, resulting in opening the circuit.

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