If a protective device rating is marked on an appliance, the branch-circuit overcurrent device rating shall not exceed ___ % of the protective device rating marked on the appliance. Article 422 covers ...

A. Supplementary overcurrent devices must not be used as the required branch circuit overcurrent device [240.10]. A supplementary overcurrent device isn’t required to be readily accessible ...

This paper discusses about the integrated overcurrent/overvoltage protection device that helps protect telecommunications equipments. With the advancement in ...

I continue to be surprised by how many equipment designers are confused by UL circuit protection standards. In trying to meet conflicting standards, engineers may actually decrease the level of ...

Tyco Electronics announced today a new addition to its popular PolySwitch resettable PPTC (polymeric positive temperature coefficient) devices surface-mount product family. Designed for the latest ...

Often, little things make a big difference in a successful design. When it comes to telecommunications equipment, the incorrect specification of a circuit breaker can lead to unnecessary system ...