Description of the DC Surge Protection 2P 1000v/20 40KA
Protect your solar and DC electrical systems with this DC Surge Protection 2P 1000v/20 40KA (SPD), rated for up to 1000V DC and capable of handling surge currents between 20kA and 40kA. Designed specifically for photovoltaic (PV) systems, this SPD safeguards critical components like inverters, batteries, and charge controllers from transient over-voltages caused by lightning strikes, grid disturbances, or switching surges.
Detailed Features
- Rated Voltage: 1000V DC
- Configuration: 2 Pole (2P) – ideal for positive and negative DC lines
- Surge Current Capacity:
- Nominal Discharge Current (In): 20kA
- Maximum Discharge Current (Imax): 40kA
- Response Time: <25ns – ultra-fast protection
- Pluggable Modules: Allows easy replacement after a fault
- Status Indicator: Visual window shows device health status
- DIN Rail Mountable: Quick and secure installation in standard enclosures
- Protection Mode: Common and differential mode protection
- Operating Temperature: -40°C to +80°C
- Standard Compliance: IEC 61643-31 / EN 50539-11
Applications of a DC Surge Protection 2P 1000v/20 40KA
- Solar PV systems (string protection)
- Off-grid and hybrid inverter setups
- Battery energy storage systems (BESS)
- Industrial DC power systems
- EV charging infrastructure (DC side)
What is a DC surge protector?
A DC surge protector, also known as a DC surge protection device (SPD), is a safety component designed to protect electrical systems and equipment that operate on direct current (DC) — such as solar power systems — from sudden voltage spikes or surges.
What Does DC Surge Protector Do?
It diverts excess voltage from a surge (often caused by lightning strikes, switching operations, or faults) away from sensitive equipment like:
- Solar panels
- Inverters
- Batteries
- Charge controllers
This helps prevent damage, reduces downtime, and extends the lifespan of your system.
How It Works:
When a surge occurs, the SPD activates and redirects the excess voltage to ground, allowing only safe voltage to continue through the system. After the surge passes, the SPD resets (if reusable) or can be easily replaced if it’s modular.