PRODUCTS
DC SPD
High-Performance DC Surge Protection Devices (DC SPD) for Solar & Industrial Systems
As renewable energy systems, DC microgrids, and industrial power networks continue to scale globally, effective DC surge protection is essential to safeguard equipment from transient overvoltages caused by lightning strikes and switching events. Dvolt Electric supplies a comprehensive range of DC Surge Protection Devices (DC SPD) engineered for solar PV systems, battery energy storage, industrial automation, and critical DC infrastructure.
Our DC SPD solutions are designed to protect sensitive power electronics, extend system lifespan, and ensure uninterrupted operation across commercial, industrial, and utility-scale installations worldwide.
Why DC Surge Protection Is Critical
Transient overvoltages can instantly damage inverters, charge controllers, battery systems, and DC control equipment. In DC environments—especially solar and energy storage systems—surges propagate faster and persist longer than in AC systems.
DC SPDs provide a controlled discharge path for surge energy, diverting dangerous overvoltages away from critical equipment and safely grounding them. Properly selected DC SPDs reduce:
- Equipment failure risk
- Fire hazards
- Downtime and revenue loss
- Long-term degradation of power electronics
For solar plants, BESS installations, and industrial DC systems, DC SPDs are a mandatory layer of system protection.
DC SPD Product Range Overview
We offer a complete range of DC SPDs covering system voltages from 600VDC to 1500VDC, suitable for indoor and outdoor DC applications.
Type 1 DC SPD – Lightning Protection
Designed for installations exposed to direct lightning currents, Type 1 DC SPDs are installed at the service entrance of DC power systems and outdoor energy infrastructure.
Best suited for:
- Utility-scale solar power plants
- Outdoor DC switchgear and inverter stations
Request technical specifications or project pricing.
Type 2 DC SPD – Surge Protection
Type 2 DC SPDs provide protection against indirect lightning surges and switching transients, making them the standard solution for most PV and DC distribution systems.
Best suited for:
- String inverters
- Rooftop and commercial solar installations
- DC distribution boards
Check available configurations below.
Type 1+2 Hybrid DC SPD
Hybrid DC SPDs combine lightning current protection and surge protection in a single compact device, ideal where space and coordination are critical.
Best suited for:
- Battery Energy Storage Systems (BESS)
- Compact combiner boxes
- Integrated energy hubs
Consult our team for system coordination support.
DC SPD for Solar & Photovoltaic Applications
Our PV-specific DC SPD range is designed to meet the unique requirements of modern photovoltaic systems, supporting both 1000VDC and 1500VDC architectures used in commercial and utility-scale solar projects.
Key Features & Performance
- PV Voltage Compatibility: 600VDC, 1000VDC, 1500VDC systems
- High Surge Capacity: Designed for severe transient conditions
- Thermal Disconnection: Prevents fire risk at end-of-life
- Pluggable Cartridges: Easy replacement without rewiring
- Fast Response Time: Protects sensitive power electronics
- Standards Compliance: Fully compliant with IEC 61643-31
Technical Specifications & Rating Overview
| Specification | Options / Ratings |
|---|---|
| System Voltage | 600V, 1000V, 1500V DC |
| Surge Rating (Imax) | 40kA – 80kA |
| Protection Type | Type 1, Type 2, Type 1+2 |
| Mounting Style | 35mm DIN Rail |
| Safety Standards | IEC 61643-31 |
| Status Indication | Visual (Green/Red) + Remote Signal Option |
Industries & Applications We Support
Our DC SPD solutions are deployed across a wide range of critical sectors:
- Utility-Scale Solar Power Plants
Central inverters, combiner boxes, DC collection systems - Commercial & Industrial (C&I) Solar
Rooftop PV systems for factories, warehouses, and commercial buildings - Battery Energy Storage Systems (BESS)
Protection for battery banks and DC bus systems - Telecom Infrastructure
DC-powered base stations and network facilities - Industrial Automation & DC Control Systems
Protection for DC control circuits and automation panels
Why Choose Dvolt Electric for DC SPD Supply?
Engineering teams and procurement managers choose Dvolt Electric because surge protection is only effective when correctly specified and reliably supplied.
Ordering & Procurement Support
We support efficient project-based and bulk procurement for renewable and industrial clients:
- Submit RFQ – Share your BOQ or system details
- Technical Review & Quote – Datasheets and pricing provided promptly
- Dispatch – Coordinated delivery aligned with project schedules
Browse DC SPD Products or Request a Quote
Explore the DC Surge Protection Devices listed below to compare specifications and ratings.
For bulk pricing, EPC quotations, or technical consultation, contact our team to receive a tailored surge protection solution.
Protect your DC systems from the unexpected—choose DC SPDs engineered for performance, safety, and scale.
Frequently Asked Questions
What is the purpose of a DC SPD in solar systems?
A DC SPD protects PV modules, inverters, and DC equipment from voltage spikes caused by lightning and switching transients, preventing costly failures and downtime.
Which DC SPD type should be used for PV installations?
Type 2 DC SPDs are typically used for string and inverter protection, while Type 1 devices are required where direct lightning exposure or external lightning protection systems are present.
Are your DC SPDs compliant with IEC standards?
Yes. All solar-specific DC SPDs supplied by Dvolt Electric comply with IEC 61643-31, the international standard for PV surge protection devices.
Do you support bulk orders for EPC and utility projects?
Absolutely. We specialize in bulk supply and project pricing for EPC contractors, utilities, and large-scale renewable energy projects.
