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Power Circuit Breaker for DC Power System

Power Circuit Breaker for DC Power System

ENTEC’s DC Power Circuit Breaker can meet the increasing demand of DC power generation and distribution technology in the field of renewable energy solution and other DC power systems.

ENTEC’S DC ACB can perform reliable overcurrent and short-circuit current protection to avoid damage in the DC distribution line equipment, and to ensure operator’s safety.

The DC ACB is designed to cover DC power protection requirements up to DC1500V/5000A, being applicable to various customer applications. ENTEC offers wide range of products and solutions to meet not only the installation requirements but also the customer’s needs.

Advanced Convenience
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  • Maintenance free
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  • Convenient operation
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  • Compact size
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  • Flexible configuration
Various Applications
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  • Renewable energy [Solar, wind, hydro etc.] power plant equipment
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  • Railway application
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  • DC power supply and distribution equipment and others
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  • Building, Vessel, other Industrial facilities
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  • Large-scale energy storage system
Other Technical Feature
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  • Wide range of selection
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  • High short-circuit capacity
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  • High operational reliability
Electrical ratings
Description
Rated service voltage Ue
Vdc
500 1000 1500
Rated insulation voltage Ui
kVdc
3.82 3.82 3.82
Rated impulse withstand
voltage Uimp
kV
12 12 12
Number of poles
P
2~3 3~4 *3~4 4 4 3~4 *4
Frame size
AF
1600 2500 1600 2500 3200 5000 1600 2500 3200 5000
Rated uninterrupted
current [at 40℃] Iu
A
630 2000 630 2000 3200 4000 630 2000 3200 4000
1000 2500 1000 2500 - 5000 1000 2500 - 5000
1600 - 1600 - - - 1600 - - -
Rated service short-circuit
breaking current Ics [%Icu]
kA
100% 100% 100%
Rated service short-time
withstand current Icw [1sec]
kA
50 65 40 45 50 65 40 45 50 65
Rated short-circuit making current Icm [%Icu]
kA
100% 100% 100%
Category of use
[According to IEC 60947-2]
B B B
Overcurrent protection
[Digital trip units for DC applications]
Long-time, Short-time, Instantaneous
Closing time
ms
≤60 ≤60 ≤60
Breaking time for Icm
ms
≤60 ≤60 ≤60
Operating temperature
-25 ~ +70
Versions Fixed - Withdrawable
According to the type of DC network Insulated / Network with earthed negative polarity
/ Network with the mid-point earthed
Rated control voltage
V
DC 24, 48, 110, 125 / AC 220
Mechanical life (k=1000)
times
25k 20k 25k 20k 20k 12k 25k 20k 20k 12k
Applied standard IEC 60947-1, 60947-2 & IEEE C37.14

* At this rating, 2 poles are connected in parallel.