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Rotary Switches

Rotary switches are manual devices operated by a rotary action to establish and break electrical contacts. A rotary switch consists of a spindle or rotor, sometimes called an actuator, that has a number of contact positions which are operated by rotating the spindle. The 51A22-01-1-14S is a 4-position rotary switch made of advanced polyester plastic and brass.

Application Field

The 51A22-01-1-14S is a reliable, versatile and durable rotary switch used in a variety of industries. As a 4-position rotary switch, it is typically used as a selector switch, connection switch, operating switch, adjustment switch, as well as in systems that require a number of electrical circuits and corresponding contacts to be switched.

Common applications include audio equipment, home appliances, lighting fixtures, test and measurement equipment, office machines, vending machines, pedestrian control, kiosks, control systems, control panels and automotive aftermarket products.

Working Principle

The 51A22-01-1-14S rotary switch employs a mechanism using a master cam and follower to transfer rotary movement into linear travel of the switch contacts. When the actuator spindle is rotated in a clockwise direction, the master cam mounted on the spindle engages the follower arm and the follower arm is pushed downwards, causing linear movement of the switch contacts. Once the spindle reaches the next detent position, the return springs act to move the contact springs into the next contact position.

The isolation between the contacts is provided by an insulated pin that avoids direct contact between the two connector blocks. This provides sufficient insulation between successive positions, ensuring that the current/voltage/propulsion remains intact as the switch transitions between positions.

Conclusion

The 51A22-01-1-14S is a reliable, versatile and durable four-position rotary switch used across a variety of industries. Its mechanism uses a master cam and follower to transfer rotary movement into linear travel of the switch contacts, and its insulated pin provides sufficient insulation between successive positions. It is a great choice for applications including audio equipment, home appliances, lighting fixtures, test and measurement equipment, office machines, vending machines, pedestrian control, kiosks, control systems, control panels, and automotive aftermarket products.

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