MRA112-BC

Rotary Switches

Rotary switches have been used for decades for commercial, industrial, and medical applications. Many medical applications require multiple high levels of safety and reliability. The MRA112-BC rotary switch is one such device designed to provide superior performance in demanding applications. This article discusses the application field and working principle of the MRA112-BC switch.

Applications

The MRA112-BC rotary switch is designed to provide robust, reliable switching operations in a variety of medical and commercial applications. Examples include controlling medical equipment, test and measurement systems, motor controls, and industrial and commercial equipment. The switch is designed to provide superior switching reliability and performance in a compact, lightweight package.

The MRA112-BC switch is capable of switching up to 250 VAC or 30 VDC, with a maximum current rating of 10 amps. The switch is temperature-resistant from -40°C to 105°C, and is immune to radio frequency interference (RFI) and electrostatic discharge (ESD).

The MRA112-BC switch is also available with optional output terminals, allowing for multiple output circuits to be triggered by a single switch action. This makes it ideal for use in applications requiring multiple levels of safety and reliability.

Design

The MRA112-BC switch is designed with a cam-activated rotary switch, with a total of 16 positions. Each position is controlled by a pair of contacts that are separately bridged and connected to the output and input circuits. The switch’s cam design ensures reliable switching performance and helps reduce the risk of switch failure due to mechanical wear and tear.

The switching contacts of the MRA112-BC are constructed of silver-plated copper and are gold-plated for enhanced durability and corrosion resistance. This construction also helps to reduce the risk of electrical arcing or fire due to contact degradation. The switch is also designed with a thermal fuse, which helps reduce the risk of fire or electrical shock due to overheating.

The MRA112-BC is available in various mounting configurations to meet specific applications. The switch is UL and UL-C approved for safety, and is rated for use in hazardous locations, making it suitable for use in commercial, industrial, and medical applications.

Conclusion

The MRA112-BC rotary switch is designed to provide reliable switching performance in commercial, industrial, and medical applications. The switch is designed with a cam-activated mechanism, silver coated contacts, and an integrated thermal fuse to provide enhanced reliability. The switch is also available with multiple output terminals, allowing for multiple output circuits to be triggered with a single switch action.

The MRA112-BC is UL and UL-C approved, and is rated for use in hazardous locations. This makes it an ideal choice for applications where high levels of safety and reliability are required.