LiuTaoWMX 4-String Solar Combiner Box — IP65 Plastic, 15A Fuses & 63A Main Breaker with Lightning Arrestor

The LiuTaoWMX 4 String Solar Combiner Box is a weatherproof, pre-wired PV junction enclosure that safely combines up to four solar strings while offering surge protection and overcurrent safety.

This compact plastic combiner box is designed for both grid-tied and off-grid solar arrays. It arrives pre-wired with 15 A fuses for each string, a 63 A main circuit breaker, and an integrated lightning arrester to reduce the risk of transient damage. The IP65-rated enclosure and included mounting hardware let you install the unit outdoors without additional housing, simplifying system wiring and protecting downstream components like inverters and batteries.

How does the combiner box protect my solar system?

The LiuTaoWMX combiner is built to isolate faults and limit damage from electrical events. Individual 15 A fuses prevent overcurrent on each string, while the 63 A circuit breaker acts as main disconnect and overload protection. A high-voltage lightning arrester diverts dangerous transients away from panels and electronics.

• 15 A rated fuses for each string to stop string-level shorts
• 63 A main breaker for system-level overload and disconnect
• High-voltage lightning arrester for surge diversion
• Pre-wired grounding to reduce installation errors

Is the box suitable for outdoor installations and harsh weather?

Yes — the enclosure is made from durable plastic and rated IP65, so it resists dust ingress and water jets. That protection helps prevent moisture-related faults and keeps internal terminals dry. Use standard exterior mounting points provided to ensure a secure outdoor fit.

• IP65-rated housing resists dust and rain exposure
• Robust plastic construction for UV and corrosion resistance
• Pre-drilled mounting clips and screws included for fast attachment
• Sealed cable entries to preserve internal dryness

How easy is installation and wiring for an installer or homeowner?

The unit ships pre-wired with PV cables, a ground lead, and labeled terminals to reduce setup time. Mounting clips and screws are included so you can secure the box quickly to a wall or racking rail. Clear separation of string inputs and the main output helps ensure neat connections and easier troubleshooting later.

• Pre-wired string leads and ground wire for plug-and-play setup
• Mounting clips and screws included — no extra hardware required
• Accessible terminals and labeled ports for straightforward wiring
• Compact footprint for flexible placement near array or inverter

What systems and components is this combiner box compatible with?

The LiuTaoWMX 4-string combiner works with most PV modules, brands of solar connectors, and typical residential or small commercial inverter and battery setups. It’s appropriate for string arrays where four parallel inputs need combining into a single output protected by a main breaker. It does not replace inverter-specific protection requirements but adds string-level safety and surge mitigation.

• Compatible with common MC4-style connectors and PV cable types
• Designed for both grid-tied and off-grid installations
• Suitable for residential arrays and small commercial arrays
• Works alongside inverters and charge controllers without brand restrictions

Who this product is for: The LiuTaoWMX 4 String Solar Combiner Box is ideal for electricians, solar installers, and DIY-savvy homeowners who need a quick, weatherproof way to merge up to four solar strings with reliable overcurrent and surge protection. Choose this enclosure when you want a compact, pre-wired solution that simplifies wiring, speeds installation, and adds string-level safety to small-to-medium PV systems.