DC Miniature Circuit Breakers (DC MCB)
Compare the published VIOX VOB3-63DC, VOB6-63DC and VOB2-125DC series for direct-current circuit protection in solar PV, battery, telecom and industrial DC systems.
직류DC-specific interruption
Series configurationVerify poles and polarity
63A / 125APublished current platforms
250V–1200V classesConfirm exact series data
DC MCB란 무엇입니까?
A DC miniature circuit breaker is designed to interrupt overload and short-circuit current in a direct-current circuit within its published voltage, pole, polarity and breaking characteristics.
DC arcs do not pass through a natural current zero in the same way as AC arcs. The breaker construction and required series-pole arrangement must therefore be selected from explicit DC ratings rather than inferred from an AC device.
DC MCB Series Overview
Three published VIOX series for compact and higher-current DC protection. Open each product page for exact voltage, pole and interruption data.
How to choose a DC MCB
Start with maximum system voltage and fault conditions, then verify poles, polarity and circuit coordination.
Maximum DC voltage
Confirm the worst-case circuit voltage and the required pole arrangement from the exact datasheet.
Current and breaking capacity
Coordinate rated current with conductor capacity and verify prospective DC fault current.
Poles and polarity
Follow the approved wiring diagram, including any series-pole or polarity requirements.
Application coordination
Check source behavior, upstream and downstream protection, isolation and environmental conditions.
Treat DC interruption as a system decision
A matching current number is not enough; voltage, pole arrangement, polarity and available fault current determine suitability.
Compare published DC MCB series
빈 셀은 현재 제품 요약에서 해당 값을 사용할 수 없음을 의미합니다. 사양을 확인하기 전에 모델 페이지를 열거나 데이터시트를 요청하십시오.
| 시리즈 | Current platform | 시스템 | 폴란드 | DC 전압 |
|---|---|---|---|---|
| VIOX VOB3-63DC | 63A | 직류 | — | — |
| VIOX VOB6-63DC | 63A | 직류 | — | — |
| VIOX VOB2-125DC | 125A | 직류 | — | — |
DC MCB Applications
정확한 제품 사양 확인이 필요한 일반적인 환경.
DC MCB Selection Questions
상세 회로 검증 전 제품군 비교를 위한 빠른 답변.
Can an AC MCB be used in a DC circuit?
Only if the manufacturer explicitly publishes the required DC voltage, pole and wiring configuration for that exact device. Do not infer DC suitability from an AC rating.
Why can multiple poles be connected in series?
Approved series-pole arrangements can divide the DC voltage and support arc interruption, but only the wiring shown for the exact model may be used.
극성이 중요합니까?
Some DC breakers are polarity-sensitive and others publish polarity-independent arrangements. Follow the selected model markings and diagram.
How is rated current selected?
Coordinate continuous load, conductor capacity, ambient conditions and protective characteristics, then verify the exact datasheet.
Which details are needed for selection?
Provide maximum DC voltage, load current, source and battery or PV details, available fault current, poles, wiring arrangement, quantity and target market.
Need the Right DC MCB?
Let’s Verify the DC Circuit.
Send the maximum DC voltage, load current, source type, available fault current, poles, wiring arrangement, quantity and target market.
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