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 ...

Raychem Circuit Protection, a business unit of Tyco Electronics, has announced the introduction of its 2Pro device series that features integrated overcurrent ...

TE Circuit Protection has developed a device that helps protect both cost-sensitive PSTN and VoIP telephony equipments, and the customers themselves. PSTN and VoIP equipments are prone to damage due ...

TYCO ELECTRONICS announced the introduction of a Metal Hybrid PPTC (MHP) technology useful for high-rate-discharge battery applications at ratings above 30VDC/30A such as cordless power tools, e-bikes ...

All questions and answers are based on the 2017 NEC. Q. Per the NEC, overcurrent protection devices must be placed at what location in branch-circuit or feeder conductors? A. Except as permitted by ...

Featuring no moving parts and a resistance switching action that latches immediately following an overcurrent tripping condition, the PolySwitch BD280 bladed contact device provides resettable ...

A transformer protection relay does not replace upstream devices. It defines responsibility. By clearly assigning fault ...

Differential protection is best understood as a fault control philosophy rather than a component category. The relay itself is secondary to the scheme it enforces. Once a zone is defined, the system ...

Subsection 21 “Location in Circuit” is by far the longest subsection in Art. 210 of the NEC. At nearly two and a half pages, it occupies about 85% of Part II. Of the remaining text, half a page ...