44M45-01-2-04N

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Rotary switches are some of the oldest and most reliable of electrical control devices. Though their physical appearance and construction have changed a lot over the ages, their basic operational principles remain the same. The 44M45-01-2-04N rotary switch is a perfect example – a high quality switch designed for specific application fields and using simple but effective working principles.This device is a 4 pole, 4 position rotary switch with 4 leads and a single pole. Four of the four leads act as common terminals, while the fourth terminal is switched. It has a 7/16” diameter brass shaft with a white knob, a black knob and black base. The 44M45-01-2-04N is designed for use in medical equipment, emergency lighting, consumer products, irrigation controls, and security systems. All the materials used meet UL or CSA requirements.The 44M45-01-2-04N has a straightforward operation. When the knob is rotated, a cam inside the switch is rotated along with it. As the cam rotates, it moves a spring loaded sliding contact along a range of contact points. The first contact position connects the common terminals, while the second connects one of the other terminals to the common terminal. The third and fourth positions connect the other two terminals to the common terminal. When the switch is set to its fourth position, all the contacts are disconnected.The 44M45-01-2-04N uses a mechanism known as “make before break” to switch the contacts. This means that when the knob is rotated, the new contact position is made before the previous one is broken. This results in smoother switching and reduces the risk of electrical arcs being created.The 44M45-01-2-04N rotary switch is a reliable, robust and cost effective device for controlling a wide range of applications. It has a long service life, requires minimal maintenance and is relatively simple to install. Overall, it is an excellent choice for many applications, making it a popular choice for manufacturers and consumers alike.

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