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Terminal Blocks - Accessories - Jumpers

Jumpers are one of the most common accessories in Terminal Blocks. They provide flexibility in wiring and offer several advantages in assembly and operations. Typically, terminals are connected by plugging a jumper into a series of pins, but other types of connectors may also be used when the connection requires a special layout or shape. The following sections outline the applications and the operating principles of jumpers.

Applications

Jumpers are widely used to provide a flexible interconnection between terminal blocks. They can be used to interconnect current, voltage, signal, circuit and power lines. They are also useful for connecting various devices and systems, such as electronic equipment, motors and power supplies.

Jumpers come in many shapes and sizes. Common types of jumpers include open and closed ring connecting pins, joiner bars, connecting pins, and twist-lock pins. Some specialized jumpers are also available, such as those with ferrule-style connectors or RTD sensors.

Jumpers are also used for maintenance purposes. Dual ledge jumpers are useful for isolating wires or systems during servicing or repairs. The use of double sided jumpers allows maintenance personnel to troubleshoot circuits safely, without the need to interrupt the power.

Working Principles

Jumpers are typically wired in a simple ladder style. This style of wiring allows for a quick and easy way to connect several terminal blocks to each other. The ladder-style is usually used for current sensing applications, where a signal or current needs to be passed from one terminal to another.

For connection purposes, the electrical contact points of the jumper need to be properly aligned. If the connection points are not aligned correctly, an electrical short may be created. As a result, the power and signal will flow in the wrong direction, resulting in improper operation of the system.

To prevent this, some jumpers are equipped with special sensors that detect when an improper connection exists. This helps to ensure that all connections are properly made. The sensors can also detect if a cable or wire is disconnected from the terminal block.

Jumpers may also be used in high-voltage applications, where the terminals are insulated from each other. To ensure safe operation, special insulating material is used to insulate the jumpers from each other and from the surrounding environment. This helps to protect the components from damage caused by accidental short circuits and high voltage.

Jumpers are also used in applications where the current must be passed from one terminal to another, such as when connecting two motors, or when connecting several power supplies. In such cases, the jumpers are made with two contact points, allowing current to be passed from the originating terminal to the receive terminal, without interruption.

Jumpers are extremely useful components for both applications and maintenance. They allow for a reliable connection between terminals, as well as providing flexibility and safety for high voltage and current applications. With the right accessories, jumpers can be used to efficiently connect multiple devices and systems.

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