The FYH30T4-1 part of QLT Power is a fully-rated 30A, 600 VAC/850 VDC IEC-rated, UL489-compliant molded case circuit breaker. It offers overload protection, circuit protection, and short circuit protection. This device has a 1 Pole, Thermal Magnetic Tripping system, and is offered with a wide range of attributes such as: adjustable/fixed trip settings, test/lock toggle, integral shunt trip, trip-free/holder, and power failure detection. It is suitable for use in both residential and commercial applications, and is rated for a maximum current of 30A.