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2.5KGS TERCA 8537 Retarder Controller Relayblock

The high-quality TERCA 8537 weighs 2.5 kgs. Relay is a kind of electric control device, is when the change of the input quantity to meet the specified requirements, in the electrical output circuit to make the controlled quantity of a predetermined step change of an electrical appliance. Relay has control system and controlled system, usually used in the automatic control circuit, in the circuit plays the role of automatic regulation, safety protection, conversion circuit and so on.
It is an electronic control device, which has a control system (also known as an input circuit) and a controlled system (also known as an output circuit), and is usually used in an automatic control circuit. It actually uses a smaller current to control a larger current A kind of “automatic switch”.

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