A20405RNCQK

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Rotary Switches

A rotary switch is a switch in which the contacts are changed when the rotation is actuated by a knob, lever or wheel. The A20405RNCQK is designed as a commercial 4-pole rotary switch specially designed for motor control. The switch allows for easy connection of the motor parts, saving time and energy that would otherwise be spent on soldering.

Application Field

The A20405RNCQK is used extensively in a variety of motor control applications, including in industrial machinery, automotive, home appliance, medical and defense industries. It is often used in conjunction with other components, such as relay and contactor, in order to maximize the efficiency and safety of the motor control circuit. It is designed with multiple security features to ensure reliable operation.

Working Principle

The A20405RNCQK is a four-pole commutator, which controls the movement of a motor\'s stator and rotor. The four poles are arranged in a cross shape. When the switch is turned, one of the Poles changes its position, and in turn the rotor is energized. As the rotor turns, the current flows from an energized pole to the second pole. The current will then cause the rotor to turn further, thus providing rotational power.

The switch is designed with a series of contacts, and a stepped rotor is used to independently switch the contacts. As the rotor moves, the contact points move to the next position, and the corresponding contact will be energized and the motor will rotate. By changing the positions of the contacts, the direction of the motor rotation can be changed.

Additionally, the switch can be used to energize only some of the contact points. For example, when the switch is set to a certain position, only two of the contacts get energized, while the other two remain off, thus providing rotor rotation with a reduced torque and current.

The A20405RNCQK allows for flexibility and is often used under extreme conditions when accuracy and durability are necessary. It is an effective and reliable solution for use in many applications.

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