In combination with CIBANO 500, the CB MC2 main contact module increases convenience and safety during testing. It also expands the scope of testing by adding the dynamic contact resistance test, which detects wear-related problems with main and arcing contacts.

The innovative and clearly structured connection concept means that all tests can be carried out without the need for rewiring. The circuit breaker can be grounded on both sides to prevent dangerous voltages on the equipment.

One or more CB MC2 main contact modules are directly attached to the interrupter units. This keeps the high-current cables as short as possible minimizing the test set-up time. Interference is considerably reduced thanks to the digital connection to CIBANO 500.