LMM3DC 2000V 125-800A DC MCCB for Solar PV
LMM3DC 2000V 125-800A DC MCCB for Solar PV
This series of DC MCCB is designed for PV, energy storage, new energy vehicles, telecom power, DC charging piles and other DC power systems. It provides overload protection, short-circuit protection, undervoltage protection and switching control, featuring high breaking capacity, long service life, compact size and high safety.
This series of DC MCCB is designed for PV, energy storage, new energy vehicles, telecom power, DC charging piles and other DC power systems. It provides overload protection, short-circuit protection, undervoltage protection and switching control, featuring high breaking capacity, long service life, compact size and high safety.
1. Product Overview
2. Key Specifications
| Parameter | Details |
|---|---|
| Model | M3DC-400H |
| Poles | 2P (DC positive/negative) |
| Rated Operational Voltage (Ue) | DC250V / DC500V / DC750V / DC1000V / DC1500V/DC2000V |
| Rated Current (In) | 125-800A |
| Rated Insulation Voltage (Ui) | DC 1500V |
| Rated Impulse Withstand Voltage (Uimp) | 12kV |
| Ultimate Breaking Capacity (Icu) | 20kA (at 1500V DC) |
| Service Breaking Capacity (Ics) | 20kA (at 1500V DC) |
| Protection Functions | Overload (thermal), Short-circuit (magnetic) |
| Trip Unit Type | Thermal-magnetic (fixed, DC-optimized) |
| Special Features | Push-to-trip function, arc quenching for DC circuits |
| Mounting Type | Panel mount |
| Enclosure Rating | IP20 (front face) |
| Compliance Standards | IEC 60947-2, GB/T 14048.2 |
| Operating Temperature | -25°C ~ +70°C |
| Mechanical Life | ≥5,000 operations |
| Electrical Life | ≥1,000 operations at rated load |
3. Core Features
✅ High-Voltage DC Rating: 1500V DC operational voltage, compatible with modern high-voltage solar PV systems.
✅ DC-Optimized Protection: Specialized arc quenching design ensures safe interruption of DC short-circuits, preventing arc persistence.
✅ High-Current Capacity: 400A rated, suitable for main DC distribution circuits in large solar farms and commercial installations.
✅ Push-to-Trip Function: Built-in test button allows manual tripping for maintenance safety checks and system testing.
✅ Robust Construction: Flame-retardant, impact-resistant molded case (UL94 V-0) ensures durability in outdoor and industrial environments.
✅ Large Terminal Connections: Oversized terminals accommodate high-current DC cables, ensuring secure, low-resistance connections.
✅ Clear ON/OFF Indication: Large operating handle with visible status marking for safe operation and maintenance.
✅ Wide Operating Temperature: Designed to function reliably in extreme temperature ranges, suitable for outdoor solar installations.
4. Applications
- Large-scale solar PV farm combiner boxes
- Commercial and industrial solar inverter DC-side protection
- Battery energy storage systems (BESS) and UPS units
- Off-grid and hybrid solar power systems
- High-voltage DC distribution panels for renewable energy projects
- Solar tracker and central inverter protection circuits
5. Why Choose LMM3DC DC MCCB?
- DC-Specific Design: Optimized for high-voltage DC solar systems, with specialized arc quenching for safe interruption of DC faults.
- High-Current Reliability: 800A rating and 20kA breaking capacity make it suitable for the most demanding solar farm applications.
- Safety-First Features: Push-to-trip function and visible status indication ensure safe maintenance and testing procedures.
- Durable Construction: Heavy-duty molded case and wide temperature range ensure long-term performance in harsh outdoor environments.
- Compliant & Certified: Meets IEC 60947-2 standards, providing peace of mind for solar project safety and regulatory compliance.
- Cost-Effective Solar Protection: Robust thermal-magnetic trip mechanism at a competitive price point, reducing long-term maintenance costs.
6. Technical Documents & Support
- Download the full datasheet for detailed specifications, wiring diagrams, and installation instructions for solar PV systems.
- Contact our engineering team for custom pole configurations or OEM/ODM solutions for large-scale solar projects.
- Request a quote with your project details for bulk pricing, lead times, and compliance certifications.
1. Product Overview
2. Key Specifications
| Parameter | Details |
|---|---|
| Model | M3DC-400H |
| Poles | 2P (DC positive/negative) |
| Rated Operational Voltage (Ue) | DC250V / DC500V / DC750V / DC1000V / DC1500V/DC2000V |
| Rated Current (In) | 125-800A |
| Rated Insulation Voltage (Ui) | DC 1500V |
| Rated Impulse Withstand Voltage (Uimp) | 12kV |
| Ultimate Breaking Capacity (Icu) | 20kA (at 1500V DC) |
| Service Breaking Capacity (Ics) | 20kA (at 1500V DC) |
| Protection Functions | Overload (thermal), Short-circuit (magnetic) |
| Trip Unit Type | Thermal-magnetic (fixed, DC-optimized) |
| Special Features | Push-to-trip function, arc quenching for DC circuits |
| Mounting Type | Panel mount |
| Enclosure Rating | IP20 (front face) |
| Compliance Standards | IEC 60947-2, GB/T 14048.2 |
| Operating Temperature | -25°C ~ +70°C |
| Mechanical Life | ≥5,000 operations |
| Electrical Life | ≥1,000 operations at rated load |
3. Core Features
✅ High-Voltage DC Rating: 1500V DC operational voltage, compatible with modern high-voltage solar PV systems.
✅ DC-Optimized Protection: Specialized arc quenching design ensures safe interruption of DC short-circuits, preventing arc persistence.
✅ High-Current Capacity: 400A rated, suitable for main DC distribution circuits in large solar farms and commercial installations.
✅ Push-to-Trip Function: Built-in test button allows manual tripping for maintenance safety checks and system testing.
✅ Robust Construction: Flame-retardant, impact-resistant molded case (UL94 V-0) ensures durability in outdoor and industrial environments.
✅ Large Terminal Connections: Oversized terminals accommodate high-current DC cables, ensuring secure, low-resistance connections.
✅ Clear ON/OFF Indication: Large operating handle with visible status marking for safe operation and maintenance.
✅ Wide Operating Temperature: Designed to function reliably in extreme temperature ranges, suitable for outdoor solar installations.
4. Applications
- Large-scale solar PV farm combiner boxes
- Commercial and industrial solar inverter DC-side protection
- Battery energy storage systems (BESS) and UPS units
- Off-grid and hybrid solar power systems
- High-voltage DC distribution panels for renewable energy projects
- Solar tracker and central inverter protection circuits
5. Why Choose LMM3DC DC MCCB?
- DC-Specific Design: Optimized for high-voltage DC solar systems, with specialized arc quenching for safe interruption of DC faults.
- High-Current Reliability: 800A rating and 20kA breaking capacity make it suitable for the most demanding solar farm applications.
- Safety-First Features: Push-to-trip function and visible status indication ensure safe maintenance and testing procedures.
- Durable Construction: Heavy-duty molded case and wide temperature range ensure long-term performance in harsh outdoor environments.
- Compliant & Certified: Meets IEC 60947-2 standards, providing peace of mind for solar project safety and regulatory compliance.
- Cost-Effective Solar Protection: Robust thermal-magnetic trip mechanism at a competitive price point, reducing long-term maintenance costs.
6. Technical Documents & Support
- Download the full datasheet for detailed specifications, wiring diagrams, and installation instructions for solar PV systems.
- Contact our engineering team for custom pole configurations or OEM/ODM solutions for large-scale solar projects.
- Request a quote with your project details for bulk pricing, lead times, and compliance certifications.
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