IEC Supplementary Protector: 2 A Amps, 7.5kA at 480V AC, Screw Clamp, NDB2-63, 480V AC, B

B-curve two-pole supplementary protectors trip instantaneously when the current load exceeds three to five times the rating of the device. These breakers mount on standard 35mm DIN rail and are UL1077 listed for use as supplementary protection from damage caused by overcurrents and short circuits. They protect two circuits at the same time and are used when protection against low-level short circuit faults is desired, such as in PLC wiring, lighting, and appliances.