09MS45-02-1-03N

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Introduction

A rotary switch has a circular disc, with a set of contacts distributed around the circumference. As the disc is rotated, different contacts are made. A nine position rotary switch 09MS45-02-1-03N is a Multi-deck switch which has two and four-pole versions available. It provides segmented switching contacts and works as a so-called "make before break" manual application switch.

Configuration

The 09MS45-02-1-03N rotary switch is composed of a plastic case and 6 hands per segment. It has a total of 9-deck positions that provides uniform contact spacing which is recommended for applications such as start-stop switching, light dimming, and fan regulation. Furthermore, this rotary switch is epoxy sealed to provide complete weather and humidity protection.

Application field

Rotary switches such as 09MS45-02-1-03N can be used in circuits where it is necessary to connect multiple conductors either in series or parallel. The main two-pole versions are for connecting and disconnecting electrical loads, and for switching between more than one power supply in the circuits. In addition, the four-pole versions are for changing between multiple voltages, atmospheres and mediums.

Besides this, 09MS45-02-1-03N is frequently used in industrial automation, instrumentation and control, motors, lighting, HVAC systems, and professional broadcast equipment due to its multiple-deck switching capabilities.

Working principle

The working principle of 09MS45-02-1-03N is based on the displacement of the switches’ contacts opened or closed. A dome related with a coil spring is the nuclear structure of the system and moves according to the movement of the rotary switch. The coil spring is compressed every time the switch is rotated; this compressing force creates a tension in the dome which is sufficient to open or close the contacts in one section at each time.

The displacement happens in an oscillatory motion with rhythms and repetitive time gaps that allows the switch to have operational control of the connected objects. By this mechanism, the 09MS45-02-1-03N achieves a fast and precise switching process, which outclasses electromechanical switches due to its low energy consumption, reduced size and high working temperature range.

Conclusion

The 09MS45-02-1-03N is a nine position rotary switch designed to make before break functions. It is composed of six hands per segment and provides uniform contact spacing, which makes it suitable for many industrial applications such as start-stop switching, motor and fan regulation, and light dimming. Since the switching process is based on a oscillatory movement of dome related with a coil spring, the switch achieves a fast and precise process, with a low energy consumption, reduced size and high working temperature range.

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