W31-X1007-10

Circuit breakers, such as the W31-X1007-10 model, are defined as an assembly composed of contacts, an arc-extinguishing medium, and a housing. These devices are designed to automatically react to and interrupt fault currents of sufficient magnitude, thus protecting electrical circuits from dangerous overload currents and short-circuits. This article will discuss the application field and working principle of the W31-X1007-10 circuit breakers.

Application Field

The W31-X1007-10 circuit breaker is designed for use in industrial motor control systems and motor branch circuits with ratings of 208 to 600 VAC and up to 100A for three-phase circuits. It is specifically designed for use in environments with significant levels of vibration and mechanical shock, making it a suitable choice for applications that involve hazardous locations, severe industrial conditions, or potentially explosive atmospheres. It also features instantaneous tripping, which helps protect motors and other sensitive equipment during fault conditions.

Working Principle

The W31-X1007-10 circuit breaker is built around a thermal-magnetic tripping system, which utilizes both a bimetallic strip and an electromagnet in order to rapidly and reliably detect fault conditions. The bimetallic strip acts as a heat sensor, responding to increases in current through the circuit by bending in response to the rise in temperature. Once the current reaches a certain threshold, the strip triggers the electromagnet, which in turn shuts off the power to the circuit.

At the same time, the circuit breaker is designed to also respond to sudden increases in current, such as those caused by short circuits. To detect these conditions, the W31-X1007-10 utilizes an instantaneous trip system, which utilizes an internal capacitor that is charged up when the power is first turned on. If a sudden increase in current is detected, this capacitor discharges through the coil of the electromagnet, which quickly de-energizes and opens the contacts, thus shutting off the power to the circuit before the bimetallic strip even has a chance to respond.

Overall, the W31-X1007-10 circuit breaker is designed to provide a reliable and effective solution for motor control systems and motor branch circuits in environments with hazardous locations, severe industrial conditions, or potentially explosive atmospheres. Its thermal-magnetic tripping system and instantaneous trip capabilities combine to provide quick and accurate response to any fault conditions, thus protecting motors and other sensitive equipment from dangerous overload currents and short-circuits.