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71ASF30-07-2-03S Application Field and Working Principle in Rotary Switches

Rotary switches are widely used in various applications, most notably in electronics, telecommunications, industrial and automotive engineering. They are an integral part of a larger system, used to control electric currents and signals, and are essential for the proper functioning of almost any machine or device. Typically, rotary switches are designed to be used in either simple or complex electrical systems, depending upon their complexities.

The 71ASF30-07-2-03S is a rotary switch designed for maximum reliability and minimum size. It is made of corrosion-resistant, non-sparking bronze alloy housing and features a high-quality stainless steel rotor with a tapered spline to ensure maximum contact life. The switch also features broad disconnect blades and heavy-duty wiring terminals that can handle a wide range of voltage and current.

In terms of its application field, the 71ASF30-07-2-03S is ideal for controlling motors, lamps, transformers, computers, and various industrial and automotive systems. It is also suitable for manual or remote switching in industrial environments, where contact bounce may occur due to vibration and switching contact time may be short. This switch is also suitable for low-power and high-frequency applications.

Working Principle

The 71ASF30-07-2-03S rotary switch is a typical closed-type, six-pole contact design. This means that each pair of contact blades is mechanically operated by rotating the shaft. The other four contact blades are connected to the rotor, so when a selection is made, the corresponding blade is connected to its opposite terminal. At this point, an electrical signal can pass through the contact, completing the circuit.

When the user rotates the shaft, the keypad and rotor assembly will move, allowing the blades to rotate, connecting one pair of contacts with another. When the user releases the shaft, the rotor and keypad assembly will remain in place, holding the contact blades in the selected position. This ensures that the same selection will be kept until the user makes another.

The 71ASF30-07-2-03S switch also features an Idler lever and contact block assembly, which prevents accidental disengagement of the contacts during the switch operation. The anti-rotation feature also allows for adjustable contact life, helping to ensure that the contacts will remain in their respective positions for longer periods of time.

The 71ASF30-07-2-03S rotary switch is an ideal choice for controlling various electric components and signals. Its robust design, corrosion-resistant housing and adjustable contact life combine to provide a reliable and durable solution to users\' needs.

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