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Dual String PV Combiner Box 1000VDC | HD Series with Fuse, SPD & Breaker
(1) Dual string pv combiner box for 1000VDC solar PV systems.
(2) Equipped with 2× DC fuses + Type 2 SPD + DC breaker (MCB) for dual output protection.
(3) Outdoor IP65 / IK09 PC enclosure, PG glands for 2.5–16 mm² cable connection.
HD Series — Dual String PV Combiner Box 1000VDC
The HD Series dual string pv combiner box is designed for dual PV string inputs with independent dual outputs in 1000VDC systems. Each string is fused individually, while a shared Type 2 SPD and DC breaker (MCB) ensure safe surge suppression and circuit isolation.
View the full product line on our PV Combiner Box landing page, and explore OEM information on the manufacturer page. For switch-disconnector alternatives, check the DC switch disconnector. For quotations, please contact us.
Key Features
- Topology: Dual string (2 in / 2 out)
- System Voltage: 1000V DC
- Protection Devices: 2 × 10×38 mm DC fuses, Type 2 SPD (40 kA), DC breaker (MCB)
- Enclosure: Polycarbonate, IP65 ingress & IK09 impact resistance
- Wiring: PG09 inputs & PG21 outputs, 2.5–16 mm² cables
- Standards: SPD tested to
IEC/EN 61643-31, compliant with
CE and
UL.
Technical Specifications
| Specification | Value |
|---|---|
| Series | HD |
| Input / Output | 2 strings (2 in / 2 out) |
| Max System Voltage | 1000V DC |
| Max Input Current | 16 A per string |
| Max Output Current | 2 × 16 A |
| Surge Protective Device | Type 2 SPD, 40 kA |
| Fuse | 2 × 10×38 mm DC fuses, typ. 16 A |
| Breaker | DC breaker (MCB), 32 A |
| Enclosure | PC, IP65 |
| Impact Resistance | IK09 |
| Dimensions | ~240 × 220 × 110 mm |
| Cable Entries | PG09 inputs; PG21 outputs |
| Conductor Size | 2.5–16 mm² |
| Operating Temperature | −20 ℃ ~ +60 ℃ |
| Humidity | ≤ 99% |
| Altitude | ≤ 2000 m |
| Installation | Wall-mounted |
Wiring Diagram
Applications
- Dual string residential PV arrays with two outputs
- Commercial rooftops with breaker-based protection
- Outdoor solar installations requiring IP65/IK09 housing
See also: DC Fuses, Surge Protection Devices, DC Switch Disconnectors, DC Breakers.
FAQ
What is a dual string pv combiner box?
A combiner box with two PV inputs and two protected outputs, equipped with fuses, SPD, and a DC breaker.
Does it use a breaker?
Yes, HD Series models integrate a DC breaker (MCB), unlike HS models that use switch disconnectors.
Is it outdoor rated?
Yes, the housing is IP65 and IK09 rated for outdoor solar applications.
How does it differ from a 2 in 1 out model?
The dual string (2 in 2 out) provides two independent outputs, while the 2 in 1 out combines two inputs into one output.
Request a Quote
Contact us with your PV system details and we will configure the dual string HD combiner box accordingly. Request a quote →
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