38720-3211

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Terminal blocks, or barrier blocks, form a large part of electrical engineering infrastructure. They are also known as jumper blocks or current blocks. They are the joints between electrical components, and form an important part in ensuring electrical connections are made safely and reliably. This article will discuss the 38720-3211 terminal block, its application field and its working principle.

Background

The 38720-3211 terminal block is a widely used terminal block. It provides a safe and reliable way to terminate wires, create electrical connections between components, and also provides for the insulation of the current paths. The block has an overall length of 88.9mm and width of 17.8mm. It supports a maximum current of 32A, and has given voltage rating of 630V. It is rated to UL94V-0, and is a three pole terminal block.

Application Field

The 38720-3211 terminal block is frequently used for protection and powering of motor drives, as well as in electrical equipment such as switch gear, lighting, transformers, and other low to medium power applications including industrial automation, power distribution and process control. It is also used for control panel wiring and equipment within harsh environments where a high degree of durability is required. The block resists external stress due to its robust material construction.

Working Principle

The 38720-3211 terminal block connects electrical components together via insulated physical contacts. The contacts provide electrical connections between different components via metal-to-metal contact. It also provides a barrier to the flow of electricity through it, thereby increasing the safety of the system by preventing electrical shock. The metal to metal contact also ensures an efficient electrical connection between components, allowing for minimal current drop across the connection.

The terminal block also provides for the insulation of the current paths, protecting the components from short-circuiting. It also has an electromagnetic interference (EMI) shield, which reduces the amount of external EMI entering the system. The block is further secured by its self-locking flanges.

Conclusion

The 38720-3211 terminal block is a widely used terminal block that serves a variety of electrical engineering applications. It is easily maintained and provides a safe and reliable way to terminate wires, create electrical connections between components, and also provides for the insulation of the current paths. Its high current rating, UL94V-0 rating and three pole design make it an ideal choice for many applications in industrial automation, power distribution and process control.

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