2016061625

Terminal Blocks - Specialized

Terminal blocks are an integral part of many electrical systems. They play a critical role in the safe and efficient distribution and connection of electricity, especially in environments where fast electrical connection and modification are necessary. The latest generation of terminal blocks, however, offer even more features and capabilities for specialized applications.

Applications and Benefits of Specialized Terminal Blocks

Unlike field-standard devices, specialized terminal blocks offer enhanced capabilities for specific application types. For example, DIN-rail mounted terminal blocks are designed for installations in enclosed control cabinets where they are mounted to a DIN-rail, typically made of steel or aluminum.

Typically these blocks are insulated for use in medium-voltage applications up to 690 VAC or 250 VDC. Some even offer a holding capacity of up to 63 times their rated current, which is considerably more than standard terminal blocks. In addition, they provide a two-layer design with a securing contact in the first layer and a clamp terminal in the second layer for added safety. This dual-layer design ensures that the circuit won’t open even when exposed to high thermal loads, shock, or vibrations.

These kinds of specialized terminal blocks are particularly suited to hi-tech applications such as in robotics and electronic manufacturing. The presence of a clamp terminal prevents accidental contact with live parts, while the dual-layer design more securely keeps the circuit closed even under harsh conditions.

Working Principle

The working principle of a specialized terminal block depends on the specific technology used in its construction, but generally speaking they all work on the same general principle. The block contains an embedded latch system, which allows terminals to be easily and securely connected and disconnected. The latch system is operated by a movable lever or button that releases the connection when pressed. This not only makes connection much faster and easier than with conventional terminal blocks, but is also much safer as the operator\'s hands never have to come in contact with live parts or the clamp terminal.

In addition, many specialized terminal blocks have additional features such as the ability to reverse polarity. This allows the terminals to be connected in two different configurations, with the terminals in either an off-state or an on-state. This is important for applications such as robotics, where directionality of the circuit needs to be changed quickly and easily.

Conclusion

Specialized terminal blocks offer extended capabilities for specific applications, providing greater safety, reliability and ease of connection. Whether it’s for applications in the hi-tech field or in harsh environments where protection from shock and vibration is needed, specialized terminal blocks have an edge over conventional blocks.