The BR-DC175 and BR-DC250 are the same DC breakers installed in the MP (Magnum Panel) and MMP (Mini Magnum Panel) system enclosures, and included with the MPX extensions. These breakers function as the inverter’s DC disconnect switch and can be used as the battery-to-inverter circuit protection in most installations. These breakers were specifically designed and tested to work with Magnum inverters to provide the delay time needed to minimize nuisance breaker tripping.
Depending on the part number, the circuit breaker is either a 175 amp (PN: BR-DC175) or a 250 amp (PN: BR-DC250), high interruption capacity, magnetic-hydraulic, DC circuit breaker. These breakers have front-accessible connections, each provided with a 3/8-16 captive nut. Each breaker includes two 3/8-16 Hex head bolts with washers, and a back mount kit for installing this breaker inside MP enclosures. This kit consists of two mounting straps and two #10-32 x 3.5” Torx screws to attach the DC breaker to a mounting panel.
CAUTION: These breakers must be mounted in a vertical position to meet the specified trip current and trip delay curve.