주소
304 북쪽 추기경
세인트 도체스터 센터, MA 02124
근무 시간
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Explore Our DC Circuit Breaker Range
Reliable circuit protection for solar PV, ESS, and industrial DC systems up to 1500V — designed for performance, safety, and durability.
기술 하이라이트
Reliable DC Circuit Breakers for 250V–1000V Applications
Sinobreaker DC 회로 차단기 are purpose-built for solar PV, ESS, and DC distribution systems. Available in 63A 그리고 125A ratings, with 1P–4P configurations covering 250V to 1000V DC protection needs.
Comprehensive Voltage & Pole Options
- 1P – 250V DC : Single-string or low-voltage DC systems.
- 2P – 500V DC : Compact design for mid-range PV or ESS circuits.
- 3P – 750V DC : Suitable for small industrial or EV charging cabinets.
- 4P – 1000V DC : Ideal for higher voltage PV combiner and inverter protection.
Both 63A 그리고 125A series share identical pole-to-voltage mapping.
High Breaking Capacity & Arc Control
Each breaker uses magnetic blow-out and arc-chute technology to safely interrupt DC faults. Breaking capacity up to 10kA ensures reliable isolation even under full load conditions.
Built for consistent performance in solar, ESS, and DC distribution environments.
Certified Protection & Compliance
Designed and tested according to IEC 60947-2 그리고 UL 489 standards for DC circuit protection. High dielectric strength, thermal stability, and mechanical endurance guarantee long-term reliability.
Modular & User-Friendly Design
- DIN-rail mounting and front wiring for easy installation.
- Clear ON/OFF indicators with optional auxiliary contacts.
- Compact footprint fits within standard combiner or control enclosures.
Learn more about our OEM options at DC circuit breaker manufacturer.
비즈니스 가치
Increase System Safety, Reduce Failures, and Protect ROI
Deploying the right DC circuit breaker ensures safe isolation, over-current protection, and fault interruption across 250V–1000V DC systems. Reliable switching and protection reduce downtime, safeguard equipment, and stabilize long-term project returns.
O&M 비용 절감
Modular design, front wiring, and DIN-rail installation simplify maintenance. Durable contacts and long electrical life minimize replacement cycles and service costs.
시스템 가동 시간 향상
Fast trip response under overload or short-circuit conditions prevents damage to inverters and batteries, ensuring consistent performance in PV and ESS applications.
Bankable Reliability
Coordinated protection with DC 퓨즈 and isolators supports safe operation and compliance with IEC 60947-2 standards.
- Available in 63A and 125A versions, 1P–4P for 250V–1000V DC networks.
- Compatible with PV combiner boxes, ESS control cabinets, and EV charging systems.
- Improves equipment lifespan and supports stable LCOE across project lifecycle.
Why DC Circuit Breakers Matter in Modern Renewable Energy Systems
In renewable energy and industrial DC applications, DC 회로 차단기 play a critical role in isolating faults, protecting equipment, and maintaining stable operation. Whether it’s a 63A breaker for 500V solar PV systems 또는 125A 1000V DC breaker for energy storage and EV infrastructure, proper circuit protection ensures safety, minimizes downtime, and extends equipment lifespan.
Unlike conventional AC breakers, DC 회로 차단기 are specifically designed to extinguish persistent DC arcs, offering higher breaking capacity and thermal endurance. For PV combiner boxes, ESS battery cabinets, and DC charging networks, selecting the correct pole configuration (1P–4P) directly impacts performance, reliability, and long-term return on investment.
For complete DC protection coordination, explore integration with DC Fuse solutions and isolating switches. To ensure compliance with global standards, refer to the official IEC 60947-2 circuit breaker standard .
Design & Deployment Checklist for DC Circuit Breakers
Practical guidance for engineers: select, install, and maintain DC 회로 차단기 in solar PV, ESS, EV, and industrial DC systems. Reference: IEC 60947-2.
선택 및 조정
Choose breakers according to current, voltage, and circuit topology.
- Select 63A or 125A based on array current and cable size.
- Match poles to voltage: 1P–250V / 2P–500V / 3P–750V / 4P–1000V DC.
- Coordinate with upstream DC 퓨즈 보호 and isolation devices.
설치 및 배선
Ensure safe installation and correct polarity for DC operation.
- Install on DIN 레일 within approved enclosures or combiner boxes.
- Observe polarity marking; maintain proper torque on terminals.
- Allow clearance for ventilation and easy manual access.
Maintenance & Verification
Periodic inspection ensures long-term reliability and compliance.
- Check contact wear and mechanical function annually.
- Verify insulation resistance and trip curve performance after service.
- Keep datasheets, test reports, and inspection logs for audit readiness.
- For project assistance, reach out via Contact Us.
Factory-Tested Performance & Supply Reliability
Every DC circuit breaker (63A / 125A) is factory-verified for electrical, thermal, and mechanical endurance. Sinobreaker ensures consistent quality, traceable production, and on-time delivery for 250–1000V DC PV, ESS, and industrial control applications.
Electrical & Mechanical Testing
- Each breaker tested for rated current, insulation, and dielectric strength.
- Arc-extinguishing performance verified under short-circuit and overload conditions.
- Endurance cycling (≥10,000 operations) for mechanical life validation.
- Temperature rise and thermal stability tests for continuous operation.
Production Control & Traceability
- Lot-based serial tracking from components to assembled units.
- Incoming material inspection and in-process QC with acceptance records.
- 100% outgoing functional check (trip curve, polarity, and terminal torque).
- Quality documentation: datasheet, routine test report, and CoC available on request.
Delivery & Engineering Support
- Standard lead time maintained for common ratings; project builds on schedule.
- OEM labeling and specification matching for EPC and panel integrators.
- Application notes for coordination with DC 퓨즈 and isolator systems.
- Dedicated technical contact for design verification and production follow-up (contact our engineers).
리드 타임2-4주(통상)
MOQ프로젝트 친화적
보증24개월
CertificationIEC / CE / TÜV / UL
Frequently Asked Questions about DC Circuit Breakers
A DC circuit breaker is an electrical protection device that automatically interrupts current flow when overload or short-circuit conditions occur in a direct current circuit. It isolates faults and prevents damage to inverters, batteries, and DC equipment.
Sinobreaker DC circuit breakers are available in 63A 그리고 125A ratings, supporting voltage levels from 250V to 1000V DC. Polarity configurations include 1P, 2P, 3P, and 4P — corresponding to 250V, 500V, 750V, and 1000V DC respectively.
Unlike AC breakers, DC circuit breakers must extinguish continuous current without zero-crossing points. They use magnetic blow-out and arc chute designs to safely interrupt DC arcs, making them suitable for solar PV, ESS, and EV charging 시스템.
Install the breaker on a DIN 레일 inside a protective enclosure or combiner box. Observe polarity markings and use appropriate torque for terminals. For 4P configurations, ensure correct series connection for higher voltage strings.
Yes. All models are tested according to IEC 60947-2 그리고 UL 489 standards, ensuring safe operation and global compatibility for renewable energy and industrial applications.
Maintenance is minimal. We recommend periodic inspection for contact wear, tightening terminal screws, and verifying mechanical operation annually. Always disconnect power before maintenance.
Absolutely. Sinobreaker DC circuit breakers are widely used in ESS battery racks, DC busbars, EV chargers, and photovoltaic arrays, providing safe disconnection and fault isolation up to 1000V DC.
You can buy directly from Sinobreaker, a professional manufacturer and supplier of DC protection components. For technical support or quotations, please visit our 문의하기 페이지로 이동합니다.
