JUTRION JRSPD-40DC Series Solar PV DC Surge Protective Device （Type 2 & Type 1+2）
The JUTRION JRSPD-40DC Series is a heavy-duty, professional-grade DC Surge Protective Device (SPD) specifically engineered to safeguard solar photovoltaic (PV) systems, DC combiners, central inverters, and energy storage systems against transient overvoltages and indirect/direct lightning strikes.
With options covering both standard Type 2 configurations and high-risk Type 1+2 combined environments, this series provides robust, long-term defense for modern renewable energy infrastructures up to 1500VDC.
Surge Protection Applications in Solar Photovoltaic Systems
In rooftop PV systems, ground-mounted PV power plants, and commercial solar projects, when a surge voltage occurs, the DC SPD can respond quickly and safely discharge the surge current to the grounding system. It is usually installed in PV combiner boxes, inverter DC input terminals, and DC distribution cabinets.
Key Features
- The product uses high-energy MOV (Metal Oxide Varistor) technology, with a response time of < 25ns.
- Available in 600V, 1000V, 1500V, and 2000V DC configurations to meet different voltage application requirements.
- Standard 35mm DIN rail mounting design allows quick installation in PV combiner boxes and inverter enclosures.
- Designed to operate safely under extreme temperature conditions from -40°C to +70°C. The housing uses UL94 V-0 flame-retardant material, with an IP20 protection rating
FAQs
Q: How is a DC surge protective device installed and wired?
A: A DC SPD is usually connected in parallel between PV+, PV-, and PE on the PV DC side.
Q: What is the main function of a PV DC surge protective device?
A: It is installed in combiner boxes or on the inverter DC side to absorb lightning surges and switching overvoltages, helping protect PV modules and inverters and reduce the risk of damage.
Q: How does a DC surge protective device protect the circuit?
A: Under normal conditions, PV+ and PV- supply power normally, and the SPD does not operate. When the voltage suddenly rises, the SPD quickly becomes conductive. The surge current is discharged through the SPD to the PE grounding system. As a result, the overvoltage received by downstream inverters, combiner boxes, and DC equipment is reduced.
DC Surge Protective Device Voltage Specifications
1. Low-Voltage DC for Weak Current / Industrial Control / Communication Systems
Common voltages in these applications:12V / 24V / 36V / 48V / 60V
2. Low-Voltage DC for Industrial Control / Energy Storage Systems
Common voltages in these applications:72V / 96V / 110V
3. High-Voltage DC for Photovoltaic / New Energy Systems
Common voltages in these applications:200V / 400V / 600V / 800V / 1000V / 1200V / 1500V / 2000V
4. Dedicated DC Applications for Railway / Power Systems
Common voltages in these applications220V / 250V / 300V
The above data refers to common application scenarios and operating voltage levels. In actual use, a more suitable DC surge protective device can be selected or customized according to the specific application scenario and system voltage.
JUTRION PV DC Surge Protective Device Detailed Parameters
JUTRION DC Surge Protective Device is specially designed and manufactured for solar photovoltaic systems. This product can be customized according to customer requirements, and suitable specifications can be recommended based on different application scenarios.
DC SPD Wiring Diagram:
DC SPD Technical Parameters
| Application Scenario | Common Voltage Uc (DC) | Nominal Discharge Current In | Maximum Discharge Current Imax | Voltage Protection Level Up |
|---|---|---|---|---|
| Low-Voltage Security Systems (Monitoring / Access Control / Communication) | 12V, 24V, 48V | 10kA, 20kA | 20kA, 40kA | 0.8–2.0kV |
| Industrial Automation (PLC / Industrial Control Equipment) | 36V, 60V, 110V | 20kA | 40kA, 60kA | 1.5–3.0kV |
| Residential PV Systems (Combiner Box / Inverter) | 600V, 1000V | 30kA, 40kA | 60kA, 80kA | 2.5–4.0kV |
| Large PV Systems / Energy Storage | 1500V, 2000V | 40kA, 60kA | 80kA, 100kA, 120kA | 3.0–6.0kV |
| Power / Railway Dedicated Applications | 220V, 250V, 300V | 30kA, 40kA | 60kA, 80kA | 2.0–4.0kV |
DC SPD Dimensions
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