Manufacturer recommendation - DC contactor Ue - for sale

This article mainly introduces the commonly used DC contactor Ue. Firstly, introduce the function of relays. Secondly, it introduces which type of universal relay to use and the types of universal relays. Later, it explained how to choose a relay. The DC contactor Ue is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit). Usually used in automatic control circuits. In fact, it uses a smaller current to control a larger current "automatic switch". Therefore, it plays a role in automatic adjustment, safety protection, and circuit conversion in the circuit.

The FR75-1 solid-state relay uses power FET switches to prevent short circuits and overload currents. The short-circuit protection function provides protection in the event of a short circuit or overload when the relay is turned on, as well as when the relay switches to a short circuit. FR75-1 is packaged in a low profit micro immersion metal package.

The DC contactor Ue is usually composed of iron core, coil, armature, contact spring, etc. As long as a certain voltage is applied to both ends of the coil, a certain current will flow in the coil, thereby generating electromagnetic effects. The armature will absorb the tension of the reset spring on the iron core under the action of the coil. Electromagnetic force attracts and drives the armature. The moving contact is in contact with the stationary contact (normally open contact). When the coil is powered off, the electromagnetic attraction also disappears, and the armature returns to its original position under the reaction force of the spring, thereby releasing the movable contact and the original static contact (normally closed contact). It is attracted and released, thus achieving the purpose of conducting and turning off in the circuit. For the "normally open" and "normally closed" contacts of relays, they can be distinguished as follows: static contacts that are in a disconnected state when the relay coil is not powered are called "normally open contacts"; The static contact in the connected state is a "normally closed contact".

According to different classification methods, there are several commonly used types of relays.

(1) According to the working principle: electromagnetic, inductive, electrical, and transistor relays.

(2) According to the measured parameters: current type, voltage type, power type, impedance type and other power relays, as well as temperature type, pressure type and other non electrical appliances.

(3) According to functions: intermediate relay, time relay, and signal relay.

Reed relays can improve packaging size, density, and speed, but their robustness is poor in situations where surge currents may exist.