A11203RNCQE

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Rotary switches are widely used as input devices in avionics and other applications. They provide a convenient way to select multiple options in a single device. The A11203RNCQE is a 4-position rotary switch that features two independent circuits with two poles each. It is commonly used in aircraft to provide user interface control for avionics, communications, navigation, and autopilot functions.

The A11203RNCQE is unique in that it provides two individual circuits with two poles each, each capable of handling up to 25 Amps at 28 VDC. Each pole can be brought into contact with one of the four contacts, or left open, creating a total of 16 possible contact configurations. The two independent circuits are housed within a single plastic housing. The switch is commonly mounted on a panel, with a handle accessible to the operator.

The A11203RNCQE can be used in a variety of ways, depending on the application. In the most basic operation, the switch can be used to select between two different circuits. This is typically used to control a multiplicity of functions. For example, switching between frequencies during radio operation, or selecting between NAV, GPS, and autopilot modes. The switch can also operate in a dual-poled, quad-circuit configuration, allowing it to control more complex systems.

The operating principle of the A11203RNCQE is based on mechanical contact. The two independent poles are connected to two contacts for each position of the switch – one for the common contact (COM) and one for the selected contact (SEL). The contacts open and close when the switch is moved from one position to another. The poles of the switch are arranged in a circle and when one of the contacts is selected, the other closes automatically.

The A11203RNCQE is a robust and reliable rotary switch that is suitable for a range of applications. With its two independent circuits, the switch can make 16 possible contact arrangements, depending on the application. Its rugged construction and ability to handle up to 25 Amps at 28 VDC make it an attractive switch for avionics, navigation systems, and autopilot use.

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