BR/SUxxxUC Series Weidmuller Your partner in Industrial Connectivity UL 489 and UL 1077 AC/DC Rated As experienced experts we support our customers and partners around the world with products, solutions and services in the industrial environment of power, Miniature Circuit Breakers signal and data. We are at home in their industries and markets and know the technological challenges of tomorrow. We are therefore continuously developing innovative, sustainable and useful solutions for their individual needs. Together we set standards in Industrial Connectivity. Visit our BR/SUxxxUC Series Circuit Breakers website page for more information: www.weidmuller.com/BRSUxxxUCSeries Weidmuller, Canada Weidmuller, Mexico Weidmuller, United States 10 Spy Court Blvd. Hermanos Serdn 698, 821 Southlake Blvd. Markham, Ontario L3R 5H6 Col. San Rafael Oriente Richmond, Virginia 23236 Telephone: (800) 268-4080 Puebla, Puebla, Mexico Telephone: (800) 849-9343 Facsimile: (877) 300-5635 C.P. 72029 Facsimile: (804) 379-2593 Email: info1 weidmuller.ca Telephone: 01 222 2686267 Email: info weidmuller.com Website: www.weidmuller.ca Facsimile: 01 222 2686219 Website: www.weidmuller.com Email: clientes weidmuller.com.mx Website: www.weidmuller.com.mx www.weidmuller.com 08/17 LIT1617BR and SU Series Thermal Magnetic Miniature Circuit Breakers Application Schematic G L1 L2 L3 Power Circuit UL489 BR2xxUC UL489 BR3xxUC Power Circuit UL489 Power BR2xxUC Transformer Control Circuit Control Transformer UL489 BR2xxUC Power Transformer UL1077 UL489 SU1xxUC UL1077 BR1xxUC UL489 SU2xxUC BR1xxUC UL489 BR3xxUC UL1077 SU1xxUC UL489 BR1xxUC M M Outlet Fixed mounted cabinet /panel heater (resistive loads) Sizing of main branch circuit protector according to table 430.52 in NEC Dual Element (Time Delay) Fuse Maximum fuse = largest motor FLA x 175% + FLA of all other motors and general loads in group Inverse Time Breaker Maximum circuit breaker = largest motor FLA x 250% + FLA of all other motors and general loads in group (for other fuse/breaker types see table 430.52)