Air Circuit Breaker is used for low voltage system protection. It trips if any short-circuit fault or overcurrent fault will take place. The fire extinguishing medium is used for ACB is Air and it depends on the contact resistance of the breaker. If the contact resistance is higher, then it might cause fire. Moreover, the trip mechanism failure can lead to damage of the equipment. So, as per NFPA 70B ACB should be tested and maintained for proper functioning. Edge Engineering can provide the below testing facilities.