39HM165

Snap Action, Limit Switches

Snap action, limit switches are electromechanical devices used to detect the opening and closing of a circuit, usually working in a single-pole, single-throw (SPST) or single-pole double-throw (SPDT) configuration. They are most often used in applications where an electrical contact needs to be made or broken quickly, such as controlling a motor or activating a relay. There are several types of limit mechanisms including momentary, adjustable, and onboard.

39HM165 Application Field and Working Principle

The 39HM165 is an SPDT snap action, limit switch from the 39HM series. This switch is typically used for DC motor applications and offers a high-density on-board construction for quick assembly. The 39HM165 is rated for 15A/400VAC, 10A/750VDC, and offers a mechanical life of 5 million cycles. This switch uses a plunger actuator which can be actuated by either a lever, roller, or straight actuator.

The 39HM165 works by using a mechanical linkage to open or close the contacts when the actuator is engaged, allowing electricity to pass through the circuit. As the actuator is released, the mechanical linkage causes the contacts to return to their original position and break the circuit. The 39HM165’s adjustable angle limiter can be configured to open the contacts at a predetermined angle, making it ideal for applications such as motor control where precision control is needed.

The 39HM165 is most commonly used for motor control applications such as activating a motor\'s start/stop switches. This switch can also be used in a variety of other applications, such as automation tasks involving push-button control or automatic door operation. In addition, the 39HM165’s ability to open and close circuits quickly can be useful for ensuring product quality in manufacturing processes.

In conclusion, the 39HM165 snap action, limit switch is a versatile and reliable switch that can be used in a variety of industrial and automotive applications. Its adjustable angle limiter makes it ideal for controlling motors, while its on-board construction makes it quick and easy to assemble. With its robust construction and long service life, the 39HM165 is an excellent choice for controlling circuits with precision and accuracy.