D4B-4A16NNPT

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Snap action, limit switches are typically applied in a range of electrical control and safety applications, such as electric motors, power supplies, heating elements and some other machine tools. The D4B-4A16NPT is a versatile and comprehensive range of snap action, limit switches, suitable for a wide range of applications and designed for reliable long life performance, including applications for close proximity switches, power components and other high-power applications.

The D4B-4A16NPT features high efficiency and extended operating lifetime. This range of snap action, limit switches has several unique features, such as high temperature, low contact resistance and resistance to shock and vibration. Also, snap action, limit switches from this range come with pluggable terminals and are designed for panel mounting.

The D4B-4A16NPT range of snap action, limit switches come with two models of actuators, both tactile and non-contact (NC). The tactile model is designed for long life and is suitable for applications requiring long life performance in harsh environments. The NC model is designed for applications requiring high precision and performance.

The switch mechanism of a snap action, limit switch comprises of two metallic plates, called "stoppers". The stoppers are connected to each other via an internal spring, which allows the switch to move freely when the actuator is operated. When the actuator is actuated, the spring is compressed and the two stoppers move closer together, creating a resistance. The resistance created serves as the mechanism for stopping the switch when the actuator is released.

The switching element of the snap action, limit switch is the contact arm. When actuated, the contact arm is pressed against the stationary plates and creates an electrical contact. This contact is responsible for opening and closing the circuit, and is the mechanism responsible for controlling the flow of electrical current.

In terms of working principle, when the actuator is in its "open" (unactuated) position, the switch is in its "off" position. When the actuator is actuated, the switch moves to its "on" position, closing the electrical contacts in the contact arm. This allows the electrical current to flow through the circuit, allowing the connected apparatus to be switched on.

The D4B-4A16NPT snap action, limit switch is designed for versatile applications, such as industrial control and applications requiring reliable, long-life performance. The range provides excellent resistance to shock, vibration and temperature, whilst optimizing performance and providing improved flexibility and functionality. With its compact size and pluggable terminals, the switches are also suitable for panel mounting, leading to a more versatile and efficient solution.

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