CB-1 is a powerful power latch breaker for 100A which is used externally to the meter as an add-on unit, using meter's power barrier for connecting the device.

CB-1 includes an isolated optocoupler for sensing breaker action by NTR's and reporting faults to the central MDM system.

For use on sites where meters are not mounted in protected cabinets, the device includes an optional safety logic that disconnects usage supply in the event of wire or enclosure tampering.