09MS45-09-1-08N

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Rotary switches are a type of switch that utilize a rotating actuator to enable users to select one or more positions of the switch. The 09MS45-09-1-08N rotary switch is a variant that provides both single and multiple pole and throw (SPST, SPDT, and DPDT) switching capabilities. This article will discuss the application field and working principle of the 09MS45-09-1-08N switch.

Application Field of 09MS45-09-1-08N Rotary Switches

The 09MS45-09-1-08N rotary switch is professional grade switching device, and is suitable for high voltage and power applications. It is commonly found in industrial control systems, automation and robotics, medical equipment, and other applications where multiple poles and throws, or high voltage and current ratings, are needed. Due to its sealed construction, it can also be used in higher temperature environments, both indoors and in harsh outdoor conditions.

Working Principle of 09MS45-09-1-08N Rotary Switches

The 09MS45-09-1-08N rotary switch is an electromechanical switching device. When the actuator, a rotatable shaft or knob, is rotated, the electrical contacts of the switch are either opened or closed. Depending on the configuration, this creates a single pole single throw (SPST) connection (opening or closing a single contact), a single pole double throw (SPDT) connection (opening one contact and closing another) or a double pole double throw (DPDT) connection (opening and closing two sets of contacts). The switch is also available with either screw or solder type terminals.

Mechanical and Electrical Characteristics of 09MS45-09-1-08N Rotary Switches

The 09MS45-09-1-08N rotary switch has a rotating actuator with a travel of 90° (2 positions) or 270° (6 positions). It can be ordered with a key-actuated locking feature to prevent accidental operation. The switch housing is made of corrosion-resistant stainless steel, and utilizes a dust-proof construction. The contacts are gold-plated copper alloy, rated for up to 0.1A at 250V AC and 0.2A at 125V AC. The maximum carrying current is 1.0A and the insulation resistance is 1000 Megohms minimum at 500V.

Environmental Considerations of 09MS45-09-1-08N Rotary Switches

The 09MS45-09-1-08N rotary switch is designed for use in moderate environments. The operating temperature range is limited to -4°F (-20°C) to +130°F (55°C) and the storage temperature is limited to -4°F (-20°C) to +176°F (80°C). The housing is sealed to protect against dust or dirt, however it rating is not rated for use in hazardous locations. The minimum insulation requirements are VDE 0110 or UL 1061, and the switch should be mounted at least 0.12” (3mm) away from magnetically active components.

Conclusion

The 09MS45-09-1-08N rotary switch is a professional grade switching device designed for high voltage and current applications. It is sealed for use in harsher environments and offers multiple pole and throw (SPST, SPDT, and DPDT) switching capabilities. The switch is also rated for use with up to 0.1A at 250v AC and 0.2A at 125V AC, and is suitable for moderate environmental conditions. For applications requiring higher voltages and current ratings, alternative rotary switches should be considered.

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