TPX7-P DC600V 4 String Solar Combiner Box 4 In 1 Out
Engineered to align with IEC 61439; protection components designed to IEC 60947-2, IEC 61643-31, IEC 60269-6
The TPX7-P 4 String Solar Combiner Box combines four PV string inputs into one protected DC output for compatible solar systems operating up to DC600V. It integrates string-level fuses, an output DC MCB, and a Type 2 DC surge protective device within an IP65 / IK10 enclosure. With fuse options from 10A to 30A, it provides compact, weather-resistant DC combining for residential and small commercial rooftop PV systems.
Fuse ratings, output breaker ratings, cable entries, and enclosure branding can be configured to meet different project and OEM requirements. Component-level certificates are available for selected configurations upon request.
4 String Solar Combiner Box Features
- 4-in / 1-out configuration — consolidates 4 PV strings into one DC600V output
- Per-string fuse protection — 10A / 15A / 20A / 25A / 30A optional, sized to your string current
- Output protection — DC MCB rated 32A or 63A, 4kV impulse withstand
- Type 2 surge protection — 20kA nominal (In), 40kA max (Imax), 2.2kV protection level
- IP65 / IK10 enclosure — outdoor-rated, dust- and water-resistant, impact-resistant
- Wide operating window — –25°C to +60°C, ≤95% humidity, up to 2000m altitude
- MC4 or PG cable entry — choose connectors to match your installation
- OEM customization — custom branding, string count, and fuse/MCB ratings available
TPX7-P DC600V Solar Combiner Box Specifications
| Configuration | 4 strings, 4 in / 1 out |
| Rated voltage (Ue) | DC600V |
| Max input current per string (fuse) | 10A / 15A / 20A / 25A / 30A optional |
| Max output current (MCB) | 32A / 63A optional |
| SPD nominal discharge current (In, 8/20µs) | 20kA |
| SPD max discharge current (Imax, 8/20µs) | 40kA |
| SPD voltage protection level (Up) | 2.2kV |
| MCB impulse withstand voltage (Uimp) | 4kV |
| MCB breaking capacity (Icu) | 6kA |
| Enclosure protection | IP65 |
| Impact protection | IK10 |
| Enclosure / component material | PC + ABS (enclosure), PA (MCB), PBT (SPD, fuse) |
| Operating temperature | –25°C to +60°C |
| Humidity | ≤95% |
| Connector | MC4 or PG cable gland |
| Installation | Wall mounting |
| Altitude | Up to 2000m |
| Reference standards | MCCB: IEC 60947-2 · SPD: IEC 61643-31 · Fuse-combination unit: IEC 60947-3 · Fuse-link: IEC 60269-6 · IP65 per IEC 60529 |
Need 4 String Solar Combiner Boxes for Your PV Systems?
Send us your maximum system voltage, string current, required fuse and breaker ratings, connector type, order quantity, and OEM requirements. Our team will confirm suitable DC600V configurations and provide a quotation within 24 hours.
Applications: Residential & Small Commercial Solar
The TPX7-P 4 string solar combiner box suits residential rooftop solar, small commercial PV arrays, and off-grid / hybrid systems up to DC600V. Its IP65 / IK10 enclosure and –25°C to +60°C operating range make it suitable for outdoor wall-mounted installation across the high-irradiance, high-temperature conditions common in the Middle East, Africa, and Southeast Asia.
Choosing Between DC600V and DC1000V Solar Combiner Boxes
DC600V solar combiner boxes are generally suitable for residential and small commercial PV systems with shorter strings. DC1000V models are commonly used for larger commercial rooftop and ground-mounted arrays with higher string voltages.
Choose according to the maximum DC voltage of the PV array—not simply the higher rating. The combiner box voltage rating must cover the maximum string open-circuit voltage under the lowest expected site temperature. String count, input current, inverter configuration, and future expansion should also be considered.
Not sure which voltage class fits your system? Read our guide to DC600V vs DC1000V Solar Combiner Boxes before selecting a configuration.
Frequent Asked Questions
A 4-string combiner box merges the DC output of four PV strings into a single DC line while providing per-string fuse protection, surge protection, and an output breaker. It reduces home-run cabling and centralizes string-level protection in one IP65 enclosure.
The TPX7-P is rated to DC600V, suited to residential and small commercial PV systems operating within that voltage class.
The TPX7-P includes per-string fuses (10A–30A), an output DC MCB (32A or 63A), and a Type 2 surge protective device rated 20kA nominal (In) / 40kA maximum (Imax) with a 2.2kV voltage protection level.
Yes. Per-string fuses are available from 10A to 30A and the output MCB in 32A or 63A. TYPLE also offers OEM customization of string count, connectors (MC4 or PG), and branding.
Yes. The enclosure is rated IP65 and IK10 for dust, water, and impact resistance, and operates in temperatures from –25°C to +60°C, making it suitable for outdoor wall mounting.
A 4 string solar combiner box accepts up to four PV string inputs and combines them into a protected output circuit. The string currents are combined, while the system voltage does not increase.
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