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Terminal blocks are connection components used for electrically connecting two or more conductor cables, conductors and other electrical components in electrical systems. With their simple, user-friendly design, terminal blocks make it easy to wire up electrical control panels, generator control panels, and other low-voltage applications.

1546967-7 Application field and working principle – these type of terminal block, also known as Barrier Blocks, are a connective method used in electrical controls and power distribution systems. Typically used in applications with higher power levels, terminal blocks are often found in control panels, generator enclosures, and other high current applications.

When utilizing barrier blocks, the connection requires two conductor connections per wire – one connection is made to the conductor and another connection is made to the terminal block. The connection is made with pins, screws, or other means of attachment. Barrier blocks also feature a removable barrier wall that prevents cross-connecting of conductors, ensures correct wiring, and provides complete insulation between the terminals.

In most cases, barrier blocks are made from some type of insulating material such as plastic, composite material, or even hardwood. The metal components of the block are usually copper, though stainless steel, brass, or other metal alloys are sometimes used as well. The current rating of barrier blocks can vary greatly depending on the type used, but are typically designed to handle up to 20 amperes.

The main advantages of using barrier blocks in electrical control panels are easy wiring, a higher current rating, and greater insulation between connected wires. They also provide cost efficiency since these connection blocks are inexpensive and can be used with minimal wire connections. Additionally, the barrier wall can be easily removed to access terminals in order to rewire, replace, and troubleshoot electrical control circuits.