BR2D3UC

Circuit Breakers

A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit. Its basic function is to detect a fault condition and, by interrupting continuity, to immediately discontinue electrical flow. It is usually a type of switch that has the ability to be reset and reused multiple times.

BR2D3UC application field and working principle

The BR2D3UC Circuit Breaker is an advanced residual current circuit breaker used primarily for the protection of people from electrical shock. The BR2D3UC is a 2-pole, 2-curve device operating with a high set point on the short-circuit protective curve and a lower set point on the overload protective curve. It is used in applications such as swimming pools, spas, and hot tubs that have continuous-duty motors and elevated water temperatures present.

The BR2D3UC\'s protective technology utilizes a thermal magnetic trip mechanism, which helps protect against both thermal and sudden current overloads, by sensing the difference between the current passing through and the current returning from the load. This helps to identify and correctly identify both overloading and faulty conditions, making the detection of faults much easier and more accurate.

The BR2D3UC has two forward-acting current curves, Type C and Type D. Type C has a long time delay and is suitable for general purpose and protection of motors. Type D has a very short time delay characteristic and is suitable for protection against unbalanced current faults. In addition, it can also be used in conjunction with vibration monitors for further safety measures.

The BR2D3UC has two adjustable set-points, one for thermal overload protection and one for short-circuit protection. It typically trips at temperatures of 110C and currents of up to 1.5 times its rating. This is done through a combination of a bimetallic element, a tripping flag, and a trip coil. Both the bimetallic element and the tripping flag respond to rapid temperature changes and interrupt the electrical circuit. The trip coil detects low-level current changes and trips when the combined current rises above the set-point.

The BR2D3UC is designed for the protection of people, equipment, and property from electrical shocks, overloads, and faults. It is suitable for the installation in industrial, commercial, and residential installations, including swimming pools and spas. It is a reliable and affordable solution to electrical protection and common cause of electrical accidents. With its advanced technology and safety features, the BR2D3UC is a great solution for providing reliable protection against dangerous electrical conditions.