302SZQE

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The proposed 302SZQE switch is a type of pushbutton switch, which can be used for different purpose, such as controlling electro-mechanical devices.This type of switch has some different features and advantages compared to other pushbutton switches. For example, it has a rating of 15A 125/250VAC and can be used in many different applications.

The 302SZQE switch is a momentary switch, which means that it will remain in the same state it is pressed until manually released. It is also a self-locking switch which can remain in a given state even when the power is turned off due to its internal spring. This makes it particularly useful in power or safety-sensitive applications.

The switch has three different operating positions. Position 0 is the off position, where the switch is not in use. Position 1 is a momentary on position, where the switch is manually pushed to activate it. Position 2 is the sustained on position, where the switch is pressed and held in order to maintain the on state.

The 302SZQE switch is designed with a plastic housing to ensure its high insulation and environmental protection. The housing uses a three-rayed black finish which makes it easily visible in low-light conditions. The base of the switch is made of a die-cast zinc alloy which provides excellent thermal and mechanical strength.

The application field of the 302SZQE switch includes control circuits of household electric appliances, such as washing machines, ovens, refrigerators, microwave ovens, and electric heaters. It is also widely used in aerospace and military fields due to its high reliability and performance.

The working principle of the 302SZQE switch is based on the push-pull principle. When the switch is not pressed, the two poles are isolated; when the switch is pressed, the two poles will be connected, thus completing the circuit.

The electromechanical characteristics of the 302SZQE switch are excellent, with a rated current of 15A and a rated voltage of 125/250V. The contact resistance is less than 10mΩ when a 125V voltage is applied. The switch can withstand a temperature range of −20°C to +85°C and can be used in environments with a relative humidity range between 5 and 95%. The long life of the switch is up to 10 million cycles.

In summary, the 302SZQE pushbutton switches is a reliable, high quality switch suitable for controlling electro-mechanical devices and wide applications. It has a momentary on and sustained on states, which can remain on when the power is off. It has a die-cast zinc alloy base, which provide excellent thermal and mechanical strength. It has an excellent electromechanical characteristics and a long life of 10 million cycles, which makes it ideal for different application.

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