Brass Stamping Parts Electrical Contact for Relay Switch

The role of the intermediate relay is small current to control large current, or weak current to control strong electricity. Intermediate relay is essentially a kind of voltage relay, which operates according to the presence or absence of input voltage. Generally, there are many contact logarithms, and the rated current of contact capacity is about 5A~10A.Because of its small size and high sensitivity, the intermediate relay is not generally used to directly control the load of the circuit, but when the load current of the circuit is below 5A~10A, it can also replace the contactor to control the load. There are many contacts of intermediate relays, there are 8-pin, 11-pin, 14-pin relays, different pin number is actually divided into two open and two closed, three open and three close, four open and four close type, you can see the pin diagram on the product. Time relay is a very important component in electrical control system. In many control systems, it is necessary to use time relay to achieve delay control, which can delay closing or disconnecting in the circuit. Time relay is a kind of automatic control apparatus which uses electromagnetic principle or mechanical action principle to delay contact closing or breaking, which is characterized by a delay from the signal obtained by the attraction coil to the contact action. We can also say that a time relay is an electrical component that is used in circuits with lower voltage or lower current to turn on or off circuits with higher voltage and higher current.

Time relay is generally used to control the starting process of motor with time as a function. There are many kinds of time relays, which can be divided into electromagnetic type, air damping type, electric type and electronic type according to their action principle, and can be divided into power-on delay type and power-off delay type according to delay mode. Let's take a look at the power-on delay timer. There are coils, normally open and normally closed contacts in the pins of the relays, which can be turned on according to the instructions marked on the pins on the product. Give the working coil of the relay a control current, and the relays will pull in and the corresponding contacts will be turned on or off. Current relay. The input of the current relay is the current, which operates according to the input current. The coil of the current relay is connected in series into the circuit to reflect the change of the circuit current.

The coil has less turns, the wire is thick and the impedance is small. Current relays can be divided into undercurrent relays and overcurrent relays. Undercurrent relays are used for undercurrent protection or control, undercurrent protection in electromagnetic sucker, resistance switching control of wound asynchronous motor during starting, etc., and overcurrent relays are used for overcurrent protection or control, such as overcurrent protection in crane circuits. The input of the voltage relay is the voltage of the circuit, which acts according to the input voltage. Similar to current relays, voltage relays are also divided into undervoltage relays and overvoltage relays. The voltage relay works in parallel in the circuit, so the coil has many turns, thin wire and large impedance, which reflects the change of voltage in the circuit and is used for voltage protection of the circuit. Voltage relays are commonly used in power system relay protection, but are rarely used in low voltage control circuits. SOOT can produce relevant stamping parts that meet customer requirements according to customer needs and drawings.