1 Pole
250V DCFor lower-voltage DC circuits where the selected wiring and isolation method is suitable.
CSB6-63 · Solar DC Protection
Solar DC Miniature
Circuit Breaker
A compact thermal-magnetic DC MCB for photovoltaic and DC distribution applications. Select the pole configuration by system voltage and verify project compliance before procurement.
Rated current10–63A
Working voltage250–1000V DC*
Breaking capacity6kA
Trip curveB / C
✓
Engineering note: *Working voltage depends on pole count: 1P 250V, 2P 600V, 3P 800V and 4P 1000V DC. Certification marks in supplied material are document references only; current model coverage must be confirmed.
1P–4PConfigurations
DINRail mounting
IP40Device body
6kVUimp
AI
Engineering Summary
For a solar DC circuit breaker, start with maximum continuous DC voltage, prospective current and fault level—not nominal module voltage alone. CSB6-63 provides model-dependent 250–1000V DC coverage, 10–63A current options, B/C trip curves and 6kA Icu/Ics. Australia and UAE projects require market- and authority-specific document review before approval.
Pole–voltage coordination
Choose the configuration by DC system voltage
Verified from the supplied CSB6-63 datasheet. Do not treat all pole options as interchangeable at 1000V DC.
2 Pole
600V DCTwo-pole configuration for model-matched photovoltaic and DC distribution circuits.
3 Pole
800V DCThree-pole configuration; confirm wiring topology and polarity documentation.
4 Pole
1000V DCHighest listed working-voltage option in the supplied CSB6-63 reference table.
Technical data
CSB6-63 reference specifications
| Rated current In | 10, 16, 20, 25, 32, 40, 50, 63A |
|---|---|
| Rated insulation voltage Ui | 1000V |
| Impulse withstand Uimp | 6kV |
| Tripping type / curve | Thermal magnetic · B / C |
| Icu / Ics | 6kA / 6kA |
| Terminal capacity | 2.5–35mm² |
| Terminal torque | 2.0–3.5N·m |
| Ambient temperature | −30°C to +70°C |
| Ingress protection | IP40 body · IP20 wiring port |
| Installation | DIN rail |
| Dimensions | 72 × 87.5 × 81mm reference |
Engineering workflow
Select before you specify
01
Establish maximum DC voltage
Calculate array maximum open-circuit voltage at the minimum site temperature and select the required pole configuration.
02
Determine continuous and reverse current
Review string current, parallel-string backfeed and equipment limits before choosing the rated current and trip curve.
03
Verify prospective fault current
Confirm the installation fault level does not exceed the selected device breaking capacity.
04
Coordinate conductor and terminals
Check conductor size, terminal capacity, tightening torque, enclosure heat rise and cable termination practice.
05
Confirm standards and market documents
Request model-specific reports, declarations, markings and authority evidence for the destination market.
Certification evidence ledger
Certification & Compliance Documents
Marks visible in supplied product material are displayed as document references—not as verified certification claims.
CE
CE Documentation
CE marking is visible in the supplied CSB6-63 catalogue material.
Document numberPending verification
Model coveragePending verification
ValidityPending verification
RoHS
RoHS Documentation
RoHS marking is visible in the supplied CSB6-63 catalogue material.
Report numberPending verification
Model coveragePending verification
Issue datePending verification
CB
CB Scheme Reference
CB mark is visible in the supplied CSB6-63 catalogue material.
Certificate numberPending verification
Issuing bodyPending verification
Standard / scopePending verification
Evidence rule: a logo alone does not confirm the certificate number, current validity, manufacturing-site scope or inclusion of every current and pole configuration. Request the exact model-specific document set before specification.
Application boundary
Where a DC MCB fits in a PV protection design
Final suitability depends on system topology, available fault current, coordination and model-specific evidence.
PV String Circuits
String overcurrent protection where the calculated reverse-current condition requires a protective device.
Combiner Boxes
Compact DIN-rail protection for segregated DC branches and maintenance-friendly circuit organization. Review the complete PV combiner box selection guide for enclosure-level coordination.
Inverter DC Feeders
Feeder protection only after checking inverter limits, DC voltage, isolation strategy and fault level.
DC Distribution
General DC branch protection within the verified ratings and environmental conditions of the selected model.
⚠Battery systems: do not assume suitability for the main battery protection device. Battery fault current can be high; verify DC breaking capacity and the exact application before selection.
Regional engineering & SEO
Built for Australian and UAE project decisions
Regional search terms are integrated into useful technical content—not repeated as keyword stuffing.
Primary market
Australia
For EPCs and distributors sourcing a solar DC circuit breaker in Australia, the product rating is only the first screen. The evidence path must match the device scope, installation and local electrical equipment requirements.
solar DC circuit breaker AustraliaDC MCB AustraliaPV DC circuit breaker1000V DC circuit breaker Australia
✓Review AS/NZS 5033 project requirements for PV array design and protection.
✓Check whether the product scope requires RCM/EESS evidence and supplier registration.
✓Verify the applicable circuit-breaker standard and model test evidence; the listed high DC voltages are outside the lower-voltage scope of AS/NZS 60898.2.
✓Confirm conductor derating, enclosure temperature, fault current and pole-to-voltage coordination.
Project verification: RCM, EESS classification, SAA installer requirements and standards evidence are not claimed by this page. Request current model-specific documents.
Primary market
United Arab Emirates
A solar DC MCB supplier in the UAE should support engineering review for high ambient temperature, dust, UV and authority-specific project documentation—not only quote a 1000V DC label.
solar DC MCB supplier UAEDC circuit breaker Dubai1000V DC MCB UAEPV string overcurrent protection UAE
✓For Dubai projects, review the current DEWA distributed renewable resource and connection requirements.
✓For Abu Dhabi, follow the applicable Department of Energy and project authority documentation path.
✓Design for high ambient temperature and verify enclosure heat rise, derating, UV, dust and salt exposure.
✓Do not confuse an overcurrent circuit breaker with a DC switch-disconnector; verify the required function.
Project verification: this page does not claim DEWA approval, ECAS certification or authority acceptance. Current model-specific evidence is required.
قاطع تيار مستمر للطاقة الشمسية الإمارات
Protection-device comparison
DC MCB, MCCB, gPV fuse or isolator?
| Decision factor | DC MCB | DC MCCB | gPV Fuse | DC Isolator |
|---|---|---|---|---|
| Primary function | Branch overcurrent protection | Higher-current feeder protection | PV string overcurrent protection | Manual isolation |
| Resettable | Yes | Yes | No — replace fuse-link | Not an overcurrent device |
| Typical selection focus | Curve, current, voltage, poles, kA | Frame, trip unit, coordination, kA | gPV class, current, voltage, holder | Utilization category, poles, voltage |
| Engineering caution | Verify DC pole wiring | Check setting and discrimination | Confirm thermal derating | Do not use as overload protection |
Installation & maintenance
Protect the rating through correct workmanship
Isolate and verify
De-energize the DC circuit, apply the approved isolation process and confirm absence of voltage before work begins.
Terminate to specification
Use compatible conductors and ferrules where applicable. Tighten within the listed 2.0–3.5N·m reference range and follow the exact device instruction.
Inspect under service
Check for heat discoloration, loose terminations, contamination, enclosure temperature and signs of abnormal operation during scheduled maintenance.
Technical FAQ
Questions procurement teams ask before quotation
Can every CSB6-63 pole option be used at 1000V DC?
No. The supplied reference table lists 1P at 250V DC, 2P at 600V DC, 3P at 800V DC and 4P at 1000V DC. Select by maximum system voltage and the verified wiring configuration.
Is the CSB6-63 approved for Australia?
No Australian approval claim is made on this page. Request the current model-specific test reports, declarations, markings, RCM or EESS evidence and supplier information, then confirm the applicable project and regulatory path.
Is the CSB6-63 a DEWA-approved DC circuit breaker?
No DEWA approval claim is made on this page. Dubai projects should be checked against current DEWA requirements and the exact project equipment-acceptance process.
What information is needed for a CSB6-63 quotation?
Provide maximum DC voltage, required pole count, continuous current, trip curve, prospective fault current, conductor size, quantity, destination market, enclosure conditions and required compliance documents.
Engineering document request
Need a model-specific datasheet or project quote?
Send your voltage, current, pole count, destination market and documentation checklist. WILLING Electric will match the request to the available product evidence.