A typical low-voltage variable-frequency drive. Industrial facilities commonly use variable-frequency drives (VFDs) to control the speed at which alternating current motors operate. Let’s examine a ...

Generally, the Art. 210 requirements for branch circuits are prerequisites for applying requirements found elsewhere. This fact is exemplified by the overcurrent protection requirements [Sec. 210.20].

Said to be ideal for applications requiring branch circuit protection that comply with UL and CSA standards, the Bulletin 1492-MC circuit breakers may be used to protect wiring and associated ...

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 ...

The new line of Allen-Bradley Bulletin 1492-MC circuit breakers meet North American electrical standards and conserve panel space to provide advanced branch circuit protection. The 1492-MC circuit ...

The usual way of preventing a small motor from drawing too much current is to install overcurrent protection in the form of a circuit breaker or some other kind of limiter. But installations that ...

Middletown, Pa. — Touch-safe fuse terminal blocks from Phoenix Contact accept Class CC and Class J fuses to meet National Electrical Code requirements for branch circuit protection. UL-Listed for ...

CARLO GAVAZZI has launched a new range of Miniature Circuit Breakers for up to 480Y/277VAC systems: GMB Series UL489 MCBs for Branch Circuit Protection and GSB Series UL1077 MCBs for Supplementary ...

TO BE READ BY ALL ELECTROSCHEMATICS ENTHUSIASTS! Much needs to be said about this oft neglected subject. We would never even think of connecting the utility mains to our house without proper circuit ...

Point-of-Sale equipment, ATMs, and kiosks are subject to costly failures often traced to power disruptions. To help combat this growing problem, Chloride offers its ONEAC brand ONePlus Series Power ...