Eaton Specialty Breaker - Direct Current
Eaton Direct Current Circuit Breakers
Product Description
DC (direct current) systems and applications are becoming commonplaceas alternative energy sourceshave expanded and the number of DC devices and data centers using DC power has swelled.
Eaton offers molded case circuit breakers and switches to meet circuit protection and switching requirements for a host of different DC end user requirements. Applications include UPS battery supply circuits, solar systems and electric vehicle charging, as well as commercial and industrial distribution.
Current ratings are available from 15 to 3000A, with a full scale of voltage and interrupting ratings to address needs ranging from standard to the highest performance. Optional internal accessories provide remote tripping and indication of breaker status
The DC breaker family is UL 489 listed and exceeds the requirements in UL 489 Supplement SC for UPS applications. Eaton breakers may be applied in both ungrounded and select grounded applications, with poles connected in series to operate at the maximum voltages.
To use DC circuit breakers on 600V grounded systems, three poles in series must be connected on the ungrounded leg.
All DC breakers use the same internal and external accessories as their corresponding Series C and Series G AC frame equivalents, except for the NBDC breaker, which uses the same internal and external accessories as the standard NB frame.
The HFDDC through HMDLDC and EG to RG DC breakers use the same internal and external accessories as their corresponding Series C and Series G AC Frame equivalents. NBDC uses the same internal and external accessories as standard NB breakers.
Many of the Eaton AC molded case circuit breakers carry 250 Vdc ratings for ungrounded systems.