UTKFHT 600V Solar PV Combiner Box 1-String — IP65 Pre-wired with 63A Breaker & Lightning Arrester

The UTKFHT 600V Solar PV Combiner Box is a pre-wired, IP65-rated single-string junction enclosure with dual DC fuses, a 63A circuit breaker, and a lightning arrester to protect and simplify small solar arrays.

This compact combiner box consolidates one solar string into a protected output feed, reducing wiring complexity and improving serviceability for residential and small commercial photovoltaic installations. Designed for outdoor use, it arrives pre-wired with grounding, PV connectors and waterproof glands so installers can save time on site while providing over-current, surge and short-circuit protection for the array and inverter.

How does this combiner box reduce installation time?

The unit ships pre-wired with internal fuse holders, a mounted 63A DC circuit breaker, grounding point and waterproof cable glands. That minimizes field wiring steps and eliminates the need to source separate protection components.

• Pre-installed internal wiring and ground terminal for faster connections
• Includes PV connectors and waterproof glands for plug-and-play input/output
• Clear internal layout makes commissioning and troubleshooting quicker

What protective features are included to guard the solar system?

Protection is delivered through two 32A DC fuses on the input side, a 63A DC circuit breaker on the output, and a high-voltage lightning arrester for surge mitigation. Together these components limit fault propagation and help protect panels and inverter electronics from common electrical failures.

• Two 32A DC fuses isolate string faults before they reach the inverter
• 63A DC breaker provides upstream over-current protection and reset capability
• High-voltage lightning arrester reduces damage from transient surges

Is this enclosure suitable for outdoor use and harsh climates?

The housing is molded from impact-resistant ABS and rated IP65, giving reliable dust and water resistance for rooftop and ground-mounted installations. A transparent PC cover lets technicians inspect components without exposing the internals to weather.

• IP65-rated ABS enclosure for rainproof, dustproof protection
• Transparent polycarbonate cover for quick visual checks
• Robust build to withstand typical outdoor environmental stressors

Which systems and voltages is this combiner compatible with?

The combiner is designed for single-string PV systems up to 600V DC and 32A per string, supporting a maximum system input power around 9,000W (dependent on system voltage). It suits on-grid and off-grid arrays for homes, small businesses, farms and other localized installations.

• Maximum DC voltage: 600V; per-string fuse rating: 32A
• Output breaker rating: 63A for inverter feed protection
• Recommended for single-string arrays and small commercial setups

Who this is for: The UTKFHT 600V Solar PV Combiner Box is aimed at installers, electricians and DIY-savvy homeowners who want a compact, pre-wired protection enclosure for small solar arrays. It fits projects that need reliable over-current and surge protection with minimal field wiring—ideal for rooftop residential systems, small agricultural arrays, remote cabins, and compact commercial PV installations where weather-resistant hardware and quick commissioning save time and cost.