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Carlo Gavazzi presents circuit breakers UL489 and UL1077

June 18, 2015 | By Renée Francoeur

June 18, 2015 – 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 circuit protection.

The GMB provide protection for a range of applications, including branch circuit protection of HACR equipment, power supplies, transformers, motors, receptacles and other equipment. One, two and three-pole arrangements are available, ranging from 0.5A to 63A, with short circuit interrupt capacity of 10kA. The GMB series breakers are UL listed and conform to IEC standard EN-60947-2.

The GSB are AC supplementary circuit protectors, which offer overcurrent protection for specific applications where branch circuit protection is already provided by another device or is not required. They are available in one, two, three and four-pole variations, ranging from 1 to 63A and have a short circuit interrupt capacity of 5kA.

The GMB series and GSB series are housed in 17.5mm wide housings (per pole), with DIN-rail mounting and red/green diagnostic trip indicators. C tripping curve is standard, with B & D tripping curves available upon request.


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