Description

The MBN363A is a 3-pole, 63A MCB with a B-type tripping curve and a 6kA short-circuit breaking capacity, rated for three-phase circuit protection in commercial and industrial distribution. The 63A per pole rating makes it suitable for protecting larger three-phase sub-circuits or sub-main feeders.
The 3-module DIN rail form factor provides simultaneous three-phase disconnection. Terminal connections accept flexible conductors up to 25mm² and rigid conductors up to 35mm², with a total power loss of 19.9W at rated current. The B-type curve is appropriate for resistive and lightly inductive three-phase loads.
IP20 rated, RoHS compliant, and operational from -25°C to +70°C, the MBN363A is compatible with standard MCB auxiliary accessories. It occupies 3 DIN rail modules measuring 83mm high, 52.5mm wide, and 70mm deep.