The CIR BRK MAG-HYD 240VAC/80VDC LVR is a type of circuit breaker that utilizes magnetic and hydraulic delay mechanisms. It has a rating of 3 amps and can operate at both 240 volts alternating current (AC) and 80 volts direct current (DC). This device is designed for installation on DIN rail and provides a level of protection against electrical faults or other issues.