1000V 3P DC Surge Protective Device — Direct Manufacturer for OEM/ODM, Wholesale & Bulk Supply
The 1000V 3P DC surge protective device is engineered for advanced photovoltaic systems, high-capacity solar inverter inputs, energy-storage DC buses, and industrial DC power distribution networks requiring reliable multi-pole surge suppression. As a professional manufacturer, supplier, and factory, we design and produce this model using a high-performance MOV (Metal Oxide Varistor) protection core, ensuring rapid response to transient overvoltage and stable protection in demanding 1000V DC conditions. Our factory supports OEM, ODM, bulk buy, and wholesale distribution, making it ideal for global solar brands and engineering contractors.
This 3-pole DC SPD is especially suitable for systems that require protection for positive, negative, and combined grounding or monitoring circuits. The robust structure provides coordinated, balanced surge suppression across three DC lines, making it a preferred choice for large commercial PV plants, central inverter cabinets, battery-energy-storage systems, and high-power charging modules. Each device is manufactured strictly in accordance with IEC 61643-31:2018, the global standard for DC surge protective devices. With both CE und TUV certification, this SPD meets international safety requirements for export markets.
The enclosure is crafted from premium PBT flame-retardant engineering plastic, offering high insulation strength, excellent thermal resistance, and outstanding aging durability under outdoor solar exposure. The internal MOV components are precisely matched to ensure low leakage current, high surge absorption capability, and long service life even under repetitive surge conditions. A built-in thermal disconnection mechanism safely isolates the module if the MOV reaches end-of-life, preventing system damage and ensuring stable protection for PV equipment.
Designed for 35mm DIN-rail installation, this SPD fits seamlessly into combiner boxes, solar inverter input cabinets, DC distribution panels, energy-storage systems, telecom DC racks, and industrial DC controllers. The device’s compact form factor makes it suitable for both new installations and system upgrades. A clear visual indicator window allows maintenance personnel to check device status instantly without disassembling components, enabling quick troubleshooting and improving system uptime.
As a leading DC SPD manufacturer and wholesale factory, we provide long-term supply, stable quality, and competitive pricing for distributors worldwide. Our OEM/ODM services include customer branding, housing color customization, marking changes, packaging design, and product parameter optimization to match different regional standards. With automated production lines and strict quality control, we ensure each unit meets high surge endurance, consistent clamping voltage, and reliable protection performance.
For customers seeking dependable 1000V DC surge protection with certified quality and large-scale supply capability, this model offers the ideal combination of performance, durability, and manufacturer-direct wholesale pricing.
Applicable scenarios / Application industries
The 1000V 3P DC surge protective device is widely used in commercial solar farms, large rooftop photovoltaic systems, high-voltage DC energy-storage banks, industrial DC power networks, and telecom base-station DC power cabinets. Its durable MOV-based structure effectively protects systems from lightning surges, switching transients, and fault-generated overvoltage, contributing to longer equipment life and reduced maintenance costs.
