4 in 1 out PV Combiner Box 4 in 1 out PV Combiner Box
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4 in 1 out PV Combiner Box 4 in 1 out PV Combiner Box
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4 in 1 out PV Combiner Box
4 in 1 out PV Combiner Box
4 in 1 out PV Combiner Box
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4 in 1 out PV Combiner Box
4 in 1 out PV Combiner Box
4 in 1 out PV Combiner Box
Home Solar PV Products PV Combiner Box 4 in 1 out PV Combiner Box
PV Combiner Box (Plastic)
PV Combiner Box (Plastic)
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2 in 1 out PV Combiner Box
2 in 1 out PV Combiner Box

4 in 1 out PV Combiner Box

Brand Name:NewTrend or OEM
Place of Origin:China
Model Number:PVJB-4
Warranty:3years
Type
SKU: 1600622998421 Category: PV Combiner Box
  • Description
  • Additional information
  • Technical Datasheet & Downloads
  • Technical FAQ & Selection Guide
Description

4 String PV Combiner box Waterproof Solar panel junction box with Fuse Breaker Surge Arrester for On Off Grid Solar Panel System

   

4 String Solar PV Combiner Box

IP65 Protection Grade & Lightning Protection & Premium ABS Material

 

Our PV Combiner Box is a perfect device designed to reduce the connection line between PV modules and inverters, facilitate maintenance and improve reliability. Equipped with high-voltage lightning arresters, 15A DC fuses, and circuit breakers to play a role in circuit protection and lightning protection. It supports photovoltaic On-Grid/Off-Grid solar power generation systems, solar panel systems, up to 700W in 12V system, 1400W in 24V system, 2800W in 48V system.

  • Professional PV Combiner Box: PV combiner box tidied up connection and confluence of photovoltaic modules. It is used to reduce the connection of the photovoltaic array to the inverter and optimize the system structure. Make it easy to cut off the circuit in maintenance and reduce the scope of the power outage when the photovoltaic system fails. It will make the photovoltaic system at its best and increase output power.
  • Secure & Reliable Protection: The solar PV combiner box is equipped with 4 pcs 15A DC fuses, a high-voltage lightning arrester, and a 500V 63A circuit breaker. It has short circuit/lightning surge/over-voltage/over-current protection/grounding protection to avoid damage to photovoltaic panels and inverters when fault occurs.
  • IP65 Waterproof & ABS Shell: The IP65 design of the solar PV combiner shell is waterproof and dustproof, ensuring that frequent replacement is not needed. The sturdy shell is made of high-quality ABS plastic material, insulating, moisture-proof, and has no dripping. In addition, it has impact resistance and high break resistance, keeping your equipment well protected in harsh environments.
  • Easy Installation & Wiring: A plug & play and pre-connected cable offers an easy solution for solar panel connection, saving at least 1-2 hours of wiring by hand. The box PV combiner can be mounted on any regular surface with provided mounting buckles, and no key is needed to open and close the box. Built-in with a ground wire connector, ground wire installation is also available. Compatible with any brand of solar panels with solar connectors.
  • Extensive Application: The combiner box is a perfect device for outdoor installation and use. Suitable for photovoltaic on-grid/off-grid solar power generation systems, solar panel systems, PV array, RV solar power, home solar panel systems. It can support solar panel systems up to 720W in 12V system, 1440W in 24V system, 2880W in 48V system.

Specifications 

  • Model: PVJB-4
  • Number Of Max. Connection PV Array: 4
  • Max. Input Current of Single PV Array: 15A
  • Total Input Current of PV Array: 60A
  • Max Input Voltage of Single PV Array: 500V
  • Max Output Voltage: 500V
  • Protection Grade: IP65
  • Operational Environment Temperature: -30℃ to 70℃ / -22℉ to 158℉
  • Relative Humidity: 0-95%, No Condensation
  • Cooling Method: Natural Cooling

Additional information
Weight 2 kg
Dimensions 25 × 25 × 25 cm
Type

Solar Combiner Box

Technical Datasheet & Downloads

📄 Technical Documentation & Product Specifications

Download official engineering datasheets, certified test standards (IEC / UL / CE), wiring diagrams, and dimensional drawings for 4 in 1 out PV Combiner Box.

📥
Official Technical Datasheet (PDF) Complete electrical ratings, tripping characteristics, dimensions, and compliance specifications.
Request Official Datasheet (PDF)
📐
2D/3D CAD & Dimensional Drawings STEP, DXF, and PDF CAD drawing files for panel builders and switchgear designers.
Request CAD Model
Certified Standards: IEC 60898-1, IEC 60947-2, CE, RoHS, ISO 9001:2015
Manufacturer: Shanghai Newtrend Electric Co., Ltd. (Global Export Compliance)
Engineering Support: 24-hour response for custom voltage ratings, auxiliary contacts, and technical consulting.
Technical FAQ & Selection Guide

💡 Frequently Asked Technical Questions & Selection Guide

Pure engineering specifications, tripping curve parameters, and electrical selection guidance for panel builders and system designers.

Voltage & Load Sizing

How to verify rated operational voltage, frequency, and load duty cycle?

A

Verify that the nominal line voltage (AC 230V single-phase or 400V/415V/690V three-phase at 50/60Hz, or DC voltage ratings) falls within the continuous maximum operating limits of the device. Check duty cycle ratings (continuous vs intermittent duty) to ensure thermal stability under full load.

Protection & Environment

What ingress protection (IP Rating) and environmental enclosures are recommended?

A

For clean indoor electrical rooms, standard IP20 modular DIN-rail housings are recommended. For outdoor, industrial washdown, or dusty environments, mount components inside weatherproof enclosures rated IP65/IP66 with UV-resistant polycarbonate or powder-coated steel enclosures equipped with compression cable glands.

Selectivity & Grading

How to ensure upstream and downstream coordination in power distribution boards?

A

Ensure proper discrimination by grading current thresholds and tripping time delays: upstream devices should have higher current ratings and intentional short-time delays (Class S), allowing downstream branch MCBs to clear localized faults without blacking out the entire facility.

Installation & Mounting

What mounting rails, busbars, and spatial clearances are required?

A

Components mount on standard symmetrical 35mm DIN rail (EN 60715 / TH35-7.5) or backplate screw fixings. Maintain recommended top/bottom ventilation gaps (typically 30–50mm) to ensure unrestricted air convection, and use standard pin/fork comb busbars to minimize contact resistance and wiring errors.

Conductor & Torque Sizing

What conductor sizes and terminal tightening torques should be applied?

A

Select copper or aluminum conductor cross-sections complying with IEC 60364-5-52 current-carrying capacity tables based on continuous load. Always use a calibrated torque screwdriver or torque wrench to tighten terminal screws to the manufacturer-specified torque to prevent hot-spot degradation and loose connections.

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PV Combiner Box (Metal)
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PV Combiner Box (Plastic)
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PV Combiner Box (Plastic)

Brand Name:NewTrend or OEM
Place of Origin:China
Model Number:PV
Input:2 4 6 8 12 Strings
Output:1 or 2 Strings
Voltage:500V, 550V, 600V, 1000V
Warranty:3years
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