Website: www.GavazziOnline.com
E-Mail: sales@carlogavazzi.com
FOR IMMEDIATE RELEASE:
Mini Circuit Breakers
- UL489 and UL1077 Type June 5, 2015 - Buffalo Grove, IL – 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 Series are UL489, AC miniature molded circuit breakers, which provide reliable protection for a
wide range of applications including branch circuit protection of HACR equipment, power supplies,
transformers, motors, receptacles and other equipment. 1, 2 and 3 pole arrangements are available, ranging
from 0.5A to 63A, with short circuit interrupt capacity of 10kA. The GMB Series circuit breakers are UL
listed and conform to IEC standard EN-60947-2.
The GSB Series are UL1077 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 1, 2, 3 and 4-pole variations, ranging from 1 to 63Amps and have a short
circuit interrupt capacity of 5kA. The GSB Series are UL recognized components.
The new GMB Series UL489 branch circuit protectors and GSB Series UL1077 supplementary protectors
are housed in compact 17.5mm wide housings (per pole), with robust DIN-rail mounting and red/green
diagnostic trip indicators. C tripping curve is standard, with B & D tripping curves available upon request.
GMB Series UL489 Branch Circuit Protectors
GSB Series UL1077 Supplementary Circuit Protectors
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1, 2 and 3 Pole from 0.5 to 63Amp
480Y / 277VAC maximum voltage rating
10kA short circuit rating
UL listed
1, 2, 3 and 4 Pole from 1 to 63Amp
480Y / 277VAC maximum voltage rating
5kA short circuit rating
 UL recognized
The GMB and GSB Series are available from Carlo Gavazzi’s North American network of sales offices
and distributors, or at www.GavazziOnline.com.
Questions regarding this press release should be directed to: info@carlogavazzi.com
CARLO GAVAZZI Inc., 750 Hastings Lane, Buffalo Grove, IL 60089
Phone: 847.465.6100 Fax: 800.222.2659 Email: Sales@CarloGavazzi.com,
CARLO GAVAZZI (Canada) Inc., 2660 Meadowvale Blvd., Mississauga, ON L5N 6M6
Phone: 888.575.2275 Fax: 905.542.2248 Email: Gavazzi@CarloGavazzi.com
CARLO GAVAZZI Mexico S.A. de C.V., Calle La Montaña no. 18, Fracc. Los Pastores, Naucalpan de Juárez, EDOMEX CP 53340
Phone/Fax: 55.5373.7042 Email: MexicoSales@CarloGavazzi.com