127-F-P10-H-KF-1A

Circuit Breakers: 127-F-P10-H-KF-1A Application Field and Working Principle

Circuit breakers are electrical devices designed to protect circuits from overloading or short circuit conditions. Specifically, the127-F-P10-H-KF-1A is a three-phase miniature circuit breaker designed for use in residential and commercial electrical installations. The breaker has two trip settings, one for overloads, and the other for short circuits.

Applications of the 127-F-P10-H-KF-1A Circuit Breaker

The 127-F-P10-H-KF-1A circuit breaker offers protection and control of many circuits, including those used in air conditioning systems, in HVAC systems, and in medical equipment applications. This breaker is also suitable for use in wet basement and bathroom installations, and can be utilized to power motor circuits and lighting systems.

The 127-F-P10-H-KF-1A is particularly suitable for residential circuit breakers and is UL listed for use in the United States. This makes it compliant with the UL 489 for the protection of personnel and property. It is designed for protection against overloading, extends coil life and is lockable for additional safety.

Working Principle of the 127-F-P10-H-KF-1A Circuit Breaker

The working principle of the 127-F-P10-H-KF-1A circuit breaker relies on a thermal-magnetic tripping system. When an over current condition is detected, the thermal element senses the heat generated by the overload and reacts by tripping the circuit breaker. On the other hand, the overload tripping system uses a magnetic field to detect short circuit conditions and trips the breaker when the magnetic force is exceeded.

To ensure that the device operates optimally, it is important to ensure that the magnetic trip unit has the correct rating. The rating should be equal to or greater than the current load on the circuit, as this will reduce the possibility of nuisance tripping. The magnetic trip unit should also be checked for correct installation, as this will optimize its operation.

Conclusion

The 127-F-P10-H-KF-1A is a three-phase miniature circuit breaker designed for use in a wide range of residential and commercial installations. The breaker utilizes a thermal-magnetic tripping system to protect against overloads and short circuit conditions. It is suitable for use in air conditioning systems, HVAC systems, motor circuits, lighting systems and medical equipment applications. To ensure optimal operation, the magnetic trip unit must have a rating equal to or greater than the current load on the circuit, and must be correctly installed.