3209512

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Terminal Blocks - Din Rail, Channel

Terminal blocks are a variety of components used for electrical connection and distribution, to facilitate the connection between two circuits. Originally designed to minimize the space consumed, the components are now an invaluable source to route electrical connection safely and reliably. The terminal blocks range from those using screws and spring clamps, to more advanced pluggable varieties.

In the terminal block family, the Din Rail and Channel are two of the most popular. Both use screws to join two electrical circuits, however, they operate differently, each with its own benefits and drawbacks. The basic differences are outlined below.

Din Rail
Din Rail terminal blocks are robust metal frame blocks with adjustable clamps, which hold the connection in place. To connect, the two wires must be stripped, the screw must be tightened and the contact tightened further. Din rail blocks come in various sizes, shapes and connections, with some more suitable to low power connections, while others are specifically designed to handle high power applications. These blocks are generally more expensive than their counterpart, the Channel type.

Channel
Channel type blocks are alternative to Din Rail blocks, but are much more compact and straightforward. The striped wires are inserted into the channel and bolted, which relies upon tight slotted screws to secure the connection, thus reducing the requirement for tightening. Channel type blocks tend to be more affordable compared to Din Rail blocks.

3209512 Application Field and Working Principle
The 3209512 application field includes a wide variety of applications, such as terminal boxes, transformers, control panels, motor and broadcast systems. When installed, this terminal block allows for up to 4 x 2mm² electrical connections, rated at 24AN (16A). It also has push-in spring clamps with a rail width of 13mm and a protection level of IP20. Furthermore, the 3209512 is a 3-pole terminal block with a positive bridging feature, which allows for the bridging of 2 electrically circuits which are powered by the same phase. Other features of this terminal block include settings for auto-reset and protection against reverse polarity.

In summarizing, both Din Rail and Channel terminal blocks are reliable for a range of applications. However, they operate differently and come in different varieties, such as the 3209512 terminal block which includes a number of valuable features.

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