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Snap Action, Limit Switches

The 44526-1122 is an example of a snap action, limit switch. Snap actions switches are designed to quickly and reliably switch a circuit on or off when an external force is applied. They are commonly used in a variety of industrial settings, including sensing machines, positioning systems, safety switches and counters. They are also widely used in home appliances, locomotives, and automobiles.

Fundamental Principles

At their core, snap action switches are designed to deliver fast and reliable switching action, mainly due to the mechanical movement and contact construction. At the heart of the 44526-1122 is a movable actuator and contact assembly, which is held in a stationary position by a return spring. When an external force is applied on the actuator, the contact assembly is displaced against the spring force to operate the switch. The force required to operate the switch can range from simple toil to high inertia forces, depending on the design of the switch.

Types of Snap Action Switches

Snap action switches come in a variety of styles and configurations. These include push-button, rocker arm, key operated, door interlock, and paddle lever switches. The 44526-1122 is a push-button switch, which operates when a push button is operated. Key operated switches can be used for additional security and door interlock switches are commonly used on access doors that must remain in the closed position.

Construction of the 44526-1122

The 44526-1122 is constructed of a molded rubber housing with a stainless steel push button. The stainless steel push button is designed to resist corrosion and provide reliable operation. Within the housing is a contact assembly and actuator. The contact assembly consists of two contacts, the normally open (NO) and the normally closed (NC) contact.

The contact assembly is held in place by a return spring and is operated when a physical force is applied on the actuator. The operating force required will depend on the spring strength and the design of the snap switch. The operating force applied to the actuation must be greater than the return spring force. The 44526-1122 has a rated operating force of 2.0 N (200 gf).

Working Principle

The 44526-1122 uses a contact assembly to switch a circuit on or off. When an external force is applied to the actuator, the contact assembly is displaced against the resistance posed by the return spring. This displacement in turn causes the contacts to close, thereby completing an electrical circuit. Once the acting force is removed, the contact assembly returns to its original position and the contacts open, breaking the circuit.

Applications

The 44526-1122 snap action, limit switch provides fast and reliable switching action and is commonly used in a variety of applications. It is often used in control systems, robotics, machine tools, and a variety of consumer and industrial equipment such as elevators, conveyors, and motors.

The 44526-1122 can also be used in safety switching applications and for positioning systems. It can also be used for door interlock switches, push-button switches and a variety of other applications. It is an excellent choice for applications that require fast and reliable switching action.

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