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SPD Series — Type 2 Surge Protective Devices
3 Models available · DC Cables, Connectors & SPD
Type 2 surge protective devices for the PV array and inverter, clamping induced lightning and switching surges before they damage electronics.
Model Number Breakdown
- Type 2 protection
- High discharge capacity
- Visual status indication
- DIN-rail mounting
Specifications Range
All specifications and dimensions can be customized upon request
| Key parameters | Model Range |
|---|---|
| Rated Voltage | 600 V, 1000 V, 1500 V |
| Nominal Discharge Current | 20 kA |
| Max Discharge Current | 40 kA |
| Protection Mode | Positive/negative to ground |
| Type | Surge protector (SPD) |
| Key Spec | Imax 40 kA · 600 V, Imax 40 kA · 1000 V, Imax 40 kA · 1500 V |
| Standard | IEC 61643-31 |
⚙How It Works
A surge protective device clamps the voltage spike from a lightning strike or switching event before it reaches the inverter. A Type 2 SPD uses metal-oxide varistors that become conductive above a threshold, shunting the surge to earth and clamping the voltage to a safe level. Fitting SPDs at both the array combiner and the inverter protects the most surge-sensitive part of the plant.
▦Structure & Composition
The SPD houses metal-oxide varistor modules on a DIN-rail body with pluggable cartridges for quick replacement. A visual status window shows whether the varistors are intact, and thermal disconnectors isolate a failed module from the circuit. Units are rated by nominal and maximum discharge current (In and Imax) for the installation's exposure level.
Model Range
| Model | Type | Key Spec | Standard | Reference Price |
|---|---|---|---|---|
| QD-SPD-600 | Surge protector (SPD) | Imax 40 kA · 600 V | IEC 61643-31 | … |
| QD-SPD-1000 | Surge protector (SPD) | Imax 40 kA · 1000 V | IEC 61643-31 | … |
| QD-SPD-1500 | Surge protector (SPD) | Imax 40 kA · 1500 V | IEC 61643-31 | … |
Applications
Selection Guide
- Install Type 2 SPDs at the array combiner and at the inverter DC input, plus AC-side SPDs at the grid connection.
- Choose the discharge rating (In/Imax) according to the site's lightning exposure level.
- Select the SPD's maximum continuous voltage to match the system's DC voltage (600, 1000 or 1500 V).
Frequently Asked Questions
Type 1 or Type 2 SPD?
Type 1 handles direct lightning at the service entrance; Type 2 clamps induced surges at distribution points such as the array and inverter.
Where should the SPD go?
At the DC combiner, at the inverter DC input, and on the AC side at the grid connection for full protection.
How do I know the SPD is still working?
The visual status window shows whether the varistors are intact; pluggable cartridges make replacement quick.
Instant Selection & Quote Calculator
Select your specifications to get an estimated price instantly.
| Base price (interpolation) | $5 |
| × Product factor | ×1.0000 |
| × Country factor | ×1.0000 |
| × Copper-linked factor | ×1.0000 |
| + Options / accessories | $0 |
Complete equipment — no winding copper linkage
Reference prices are for estimation only and do not constitute a formal offer.
We will reply with your latest quote instantly.
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