1000V DC Moulded Case Circuit Breaker

Engineered for the demanding needs of modern renewable energy systems, the CDADA DAM3PV Series 1000V DC Moulded Case Circuit Breaker delivers robust overload and short-circuit protection in DC power grids and photovoltaic (PV) installations up to DC 1500V and 800A. Shanghai DADA Electric CO., LTD., as the manufacturer, our high-performance DC MCCB is specifically optimized for solar farms, battery storage plants, EV charging infrastructure, and industrial DC microgrids.

Unlike AC breakers, the DAM3PV series features a specialized arc-quenching system that safely interrupts high-energy DC arcs—critical in systems where voltage remains constant and arcs do not self-extinguish. With rated working voltages of 1000V or 1500V DC, it supports both residential/commercial (1000V) and utility-scale (1500V) solar architectures.

Available in 2P, 3P, and 4P configurations, the DAM3PV offers frame currents from 250A to 800A and adjustable rated currents (e.g., 100A–250A for 250-frame). It provides ultimate breaking capacity up to 40kA (at lower voltages) and 20kA at 1000V/1500V DC, ensuring reliable fault clearance even in large arrays. The breaker includes built-in isolation function, IP20 protection, and supports manual or electric operation, plus auxiliary, shunt trip, and alarm contacts for remote monitoring and control.

Certified to international standards and built for harsh environments (Pollution Degree 3, –5°C to +40°C), the CDADA DAM3PV is the safe, scalable, and future-ready choice for DC power protection.

Key Specifications

Why Choose CDADA 1000V DC Moulded Case Circuit Breaker?

★ True DC Arc Interruption Technology

Specially designed arc chute and magnetic blow-out system ensures safe interruption of high-voltage DC faults—not a modified AC breaker.

★ Solar-Optimized for 1000V & 1500V Systems

Covers all major PV string voltages, from rooftop to utility-scale, with clear pole/voltage matching.

★ High Breaking Capacity at System Voltage

20kA at 1000V DC meets IEC requirements for large solar plants—ensures selective coordination with downstream devices.

★ Built-In Isolation + Accessories

Functions as both protective device and maintenance isolator; supports remote tripping and status feedback via optional modules.

★ Robust for Harsh Environments

Pollution Degree 3 rating and wide temperature range make it suitable for desert, coastal, or rooftop installations.

★ Global Compliance & Support

Designed to IEC standards, backed by Shanghai DADA’s technical team, with documentation in English for international projects.

Typical Applications

Utility-Scale Solar Farms: DC side protection at combiner or inverter input

Commercial Rooftop PV: 1000V string aggregation and fault isolation

Battery Energy Storage Systems (BESS): DC bus protection

EV Fast Charging Stations: High-power DC distribution

Rail & Telecom DC Grids: Reliable backup power circuit protection

Why choose CDADA?

★ we have a dedicated "Solar DC" product line, including DC circuit breakers, fuses, SPDs, and combiners designed for the unique requirements of photovoltaic systems.

★ OEM (your brand on our products) and ODM (custom design) services are our strengths. We support private labeling and custom packaging.

★ Our key advantages are:

1) Complete international certifications,

2) Strong OEM/ODM capability,

3) High cost-performance ratio,

4) Reliable large-scale production capacity,

5) Extensive export experience.

Frequently Asked Questions

Q1: Can I use an AC MCCB for 1000V DC solar systems?

A1: Absolutely not. AC breakers cannot reliably interrupt DC arcs due to lack of zero-crossing. This risks catastrophic failure, fire, or equipment damage. Always use a DC-certified MCCB like CDADA DAM3PV.

Q2: What’s the difference between DAM3PV-250 and DAM3PV-400HU?

A2: The “HU” suffix denotes higher performance—including enhanced arc control, larger terminals, and compatibility with arc suppression covers. HU models are recommended for critical solar applications.

Q3: Do I need an arc cover?

A3: Highly recommended in enclosed cabinets. The “zero arc cover” contains plasma during interruption, improving operator safety and reducing internal damage—especially important at 1000V+.

Q4: Can it be used as a manual disconnect switch?

A4: Yes. All DAM3PV models have isolation characteristics—meaning they provide visible contact separation and meet safety standards for maintenance isolation.

Q5: Why choose CDADA over ABB, Schneider, or Eaton for DC MCCBs?

A5: CDADA offers:

● Cost-effective 1000V/1500V DC protection without compromising safety

● Full accessory ecosystem (shunt, alarm, remote control)

● Faster delivery & localized support in Asia, Africa, and LATAM

● Proven field reliability in >10GW of installed solar projects globally