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Surge Protection Device (SPD) | Type I & Type II Lightning Surge Protector
The DC Surge Protection Device (SPD) is designed to protect solar PV systems from lightning strikes and transient overvoltage. It safeguards inverters, solar panels, batteries, and other DC equipment by diverting surge currents to ground, ensuring reliable system performance and extended equipment life.
The DC Surge Protection Device (SPD) is an essential safety component for photovoltaic (PV) solar power systems, providing effective protection against lightning-induced surges and transient overvoltage. Installed on the DC side of a solar system, it prevents high-voltage spikes from damaging critical equipment such as solar panels, inverters, charge controllers, combiner boxes, and battery storage systems.
Manufactured with high-quality surge protection technology, the SPD offers fast response time, high discharge capacity, and long-term reliability in harsh outdoor environments. Its compact DIN rail design allows quick installation inside combiner boxes and electrical distribution panels.
Designed to comply with international safety standards, the DC SPD features thermal disconnection protection, visual status indicators, and replaceable protection modules (depending on the model). It helps reduce maintenance costs, minimize system downtime, and improve the overall safety and efficiency of residential, commercial, and industrial solar installations.
Whether for rooftop solar systems, hybrid solar solutions, off-grid installations, or utility-scale PV projects, the DC Surge Protection Device provides dependable protection against electrical surges and enhances the longevity of your solar investment.
Key Features
- Protects Against Lightning & Surge Voltage
- Fast Response Time
- High Surge Discharge Capacity
- DIN Rail Mounting Design
- Thermal Protection Mechanism
- Visual Status Indicator
- Compact & Easy Installation
- Reliable Long-Term Performance
- Low Maintenance
- Suitable for Indoor & Outdoor Electrical Panels
Applications
- Solar PV Systems
- On-Grid Solar Installations
- Off-Grid Solar Systems
- Hybrid Solar Systems
- Solar Combiner Boxes
- DC Distribution Panels
- Battery Energy Storage Systems (BESS)
- Commercial & Industrial Solar Projects
Typical Specifications
| Feature | Details | ||
| Product Type | DC Surge Protection Device (SPD) | ||
| System Voltage | 600V DC / 1000V DC / 1500V DC (Model Dependent) | ||
| Number of Poles | 2P / 3P | ||
| Mounting Type | DIN Rail | ||
| Response Time | ≤25 ns | ||
| Protection Level | IP20 (Panel Mounted) | ||
| Operating Temperature | -40°C to +85°C | ||
| Standards | IEC 61643-31 |
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