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Combined Switch With Rated Voltage
- Sep 21, 2017 -


In the electric control circuit, a switch which is often introduced as a power supply can be used to directly start or stop a small power motor or turn the motor forward or backward. Local lighting circuits are also used for control. Combination switch has a unipolar, bipolar, three-pole, four-pole, rated continuous current has 10, 25, 60, 100A and many other.

The combination switch is installed three layer switch components along the hinge 4, Combination Switch each layer has a dynamic contact Head 8, a pair of static contact 9 and a pair of wiring column 1, each layer control one branch of the pass and break respectively, form the combination switch three poles. When the handle 3 is rotated to a certain angle, the three moving contacts in the three-layer switch assembly fixed on the hinge are rotated to a new position, and the static contacts of each layer are connected or disconnected in the new position respectively.

According to the combination switch model can refer to more technical parameters, Combination Switch the main technical parameters of the performance of the composite switch are:

1 Rated Voltage

Rated voltage refers to the maximum voltage that a switch can withstand in a long-term operation under specified conditions.

2 rated current

Combination Switch Rated current is the maximum working current that is allowed to pass through the switch at the closing position under specified conditions.

3) break-through ability

Combination Switch The On-off ability refers to the maximum current value that can be reliably connected and broken under the rated voltage under specified conditions.

4 Mechanical Life

The number of operating times that can be sustained before a mechanical part needs to be repaired or replaced.

5 Electrical Life

Combination Switch The number of times a load operation is carried out without the need to repair or replace parts under normal working conditions.

When the combination switch is used as the isolating switch, the rated current shall be the sum of the load current in the isolated circuit and the rated current of the motor is generally 1.5 ~ 2.5 times times the rated current of the electric machine.

According to the actual needs of the electrical control circuit, the combination switch wiring method is determined, and the combination switch specification which meets the wiring requirements is selected correctly.

Combination switch, suitable for AC 50Hz or 60Hz, rated operating voltage to 500V circuit for cutting and switching power supply, but also directly open and close the motor and high inductance load,

Combination switch has base type, padlock type, lock type, interlock type and so on. Each type has the urgent stop type and the common type two kinds respectively, Combination Switch the common type uses the black panel, the Black Knob, the urgent stop type with the yellow panel, the Red Knob makes the urgent stop sign. The base type combination switch is suitable for the common circuit.