1170-21-25A

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Circuit breakers are devices used to open and close electrical circuits, interrupting currents when activated. Circuit breakers can be found in various sizes and configurations and serve various applications and come in a variety of designs and styles. The 1170-21-25A circuit breaker is a specific type that is designed for use in industrial locations where the environment is potentially hazardous, with the safety of personnel or equipment in mind at all times. This article will explain the application field, design, and working principle of the 1170-21-25A circuit breaker.

Application Field of the 1170-21-25A Circuit Breaker

The 1170-21-25A circuit breaker is a magnetically operated trip-free type circuit breaker which is suitable for industrial-rated high voltage applications, particularly on electric utility systems. It is designed for both indoor and outdoor use in hazardous areas, such as chemical plants, refineries, and wherever potentially explosive atmospheres exist. These breakers are designed with the intention of breaking short-circuits and overloads, preventing damage to equipment or personnel in the event of a fault or overload.

Design of the 1170-21-25A Circuit Breaker

The 1170-21-25A circuit breaker is designed to meet the requirements of global standards including UL489, IEC 60947-2, and CE mark. The breaker’s compact design fits standard electric power distribution enclosures and includes a manual reset (open/close) switch. The breaker also features a trip-free design to prevent it from being tripped accidentally, which is ideal for electric utility systems. Additionally, the 1170-21-25A is available in both open and enclosed styles, and can be mounted either in an enclosure or directly into the equipment.

Working Principle of the 1170-21-25A Circuit Breaker

At the heart of the 1170-21-25A circuit breaker is an electromagnetic trip unit. When an over-current is detected, the trip unit activates a set of contacts that open to break the electricity flow, interrupting power to the circuit. The breaker will also trip in the event of a short circuit. After the breaker has been tripped, it can be reset manually, allowing power to flow again. This resetting can only be done after the cause of the fault has been addressed and resolved.

The 1170-21-25A circuit breaker is designed to protect personnel and equipment from hazardous environments and short-circuits or overloads, while at the same time offering convenience and reliability in controlling and monitoring the electrical power systems. This breaker combines proven technology with modern design features in an economical package. It is a reliable, cost-effective solution for high voltage applications in potentially hazardous environments. The 1170-21-25A circuit breaker is the perfect choice for industrial-grade power distribution applications.

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