3211472

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Terminal blocks are ubiquitous items used all over the industrial and domestic world. They come in a variety of shapes, sizes and types and are important for enabling electrical connections in an organized fashion. One type of terminal block is the Din rail mount terminal block found primarily in applications requiring distribution and control. This article looks at the 3211472 terminal block, its application field and working principle.

Terminal Block Construction

The 3211472 terminal block has 32 molded plastic parts with two gates behind them. These parts feature teeth that lock together depending on the electrical load. The terminals have two opposing rows of pins arranged in four rows; two on both sides of the block. The pins measure 2 mm in height while the width is 6 mm.

The block also features a self-aligning clamping arm, a screwless connection, an adjustable locking latch, and a netting cage for ease of handling. The connection spring plate is made of zinc to prevent corrosion and ensure tight connections. The size of the block is 18.5 mm wide, 105 mm high, and 77.5 mm deep.

Application Field

The 3211472 terminal block is primarily used in distribution and control applications. It is suitable for relay and sensor applications, and can also be used for signal lines. It is a reliable connection to power, ground and signal lines, as well as a robust option for special-purpose applications where extra vibration, shock, and mechanical stress can occur.

The block can also be used for applications involving ground fault circuit interrupters, motor control centers, and safety systems. It is also suitable for use in applications that require remote status monitoring or a link between field devices and control panels.

Working Principle

When connecting the wires to the 3211472 terminal block, the spring plate must be opened until the wiring can be threaded through. The spring plate is then closed again, pressing the wiring against the insulation. The clamping arm will then be tightened until a secure connection between the wire and the terminal is made. The wire must then be inserted into the gate behind the terminal and the latch tightened until it is securely fastened.

Once the connection is made, the block can be used for control applications. It is designed to protect the connection from short circuits and open circuits, as well as from environmental hazards. The connection is further protected by the zinc spring plate, which helps to keep the connection tight and secure.

Conclusion

The 3211472 terminal block is a reliable and robust option for distribution and control applications. It has two opposing rows of pins with two gates behind them, a self-aligning clamping arm, a screwless connection, and an adjustable locking latch. It is suitable for a wide range of applications, including relay and sensor applications, motor control centers and safety systems. The zinc spring plate helps to protect the connection from short circuits and open circuits.

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