600V 3-in-3-out DC combiner box with independent fuse, SPD, and short circuit protection per string. IP65 outdoor rated. Ideal for three-string solar PV systems with multiple inverters.
| Type | 3-in-3-out DC combiner box |
| Rated Voltage | 600V DC |
| Rated Current | 32A |
| P Rating | IP65 outdoor |
| Protection | Fuse + SPD + Short Circuit (per input) |
| Mounting | Wall mount |
The HA 600V 3-in-3-out DC combiner box is designed for solar PV systems requiring three independent output strings. Each of the three inputs has its own fuse (overcurrent protection), SPD (surge protection), and short circuit protection. This provides complete, independent protection for each PV string.
Each input is protected by a 32A PV fuse (replaceable), a Type II surge protection device (20kA/40kA), and integrated short circuit protection. All three outputs are independent, allowing connection to up to three separate inverters or three independent MPPT channels.
32A per input, replaceable
Type II, 20kA/40kA surge protection
instant fault isolation per string
weatherproof for rooftop installation
connect to three inverters or three MPPT channels
UL94-V0 rated
| Type | 3-in-3-out DC combiner box |
| Inputs / Outputs | 3 in / 3 out |
| Rated Voltage (DC) | 600V |
| Rated Current per Input | 32A |
| Fuse per Input | Yes (32A, replaceable PV fuse) |
| Fuse Voltage Rating | 1000V DC |
| Surge Protection Type | Type II (SPD) |
| Voltage Protection Level (Up) | 3.5 kV |
| Nominal Discharge Current (In) | 20 kA |
| Short Circuit Protection | Integrated per input |
| Ingress Protection | IP65 |
| Enclosure Material | PC/ABS flame retardant (UL94-V0) |
| Mounting | Wall mount |
| Dimensions (W×H×D mm) | 350 × 280 × 120 mm |
| Weight | 2.2 kg |
| Operating Temperature | -25°C to +60°C |
| Recommended Input Cable | 4mm² (12 AWG) |
| Ground Terminal | Yes |
3-in-1-out: Combines all strings into one output (one inverter) 3-in-3-out: Keeps strings independent (three inverters or three MPPT channels). Better for different roof orientations and provides string-level fault isolation.
Yes. With individual string fuses (32A per input), integrated SPD, and short circuit protection, this combiner box meets NEC 2017/2020 requirements.
Input: 4mm² (12 AWG) PV cable per string Output: 6mm² (10 AWG) PV cable per output
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