DIHOOL Solar Disconnect Switch 40A IP65 Outdoor — Weatherproof 40 Amp Breaker Box with Plug-and-Play Terminals

DIHOOL 40 Amp Solar Disconnect Switch is a weatherproof, UV-resistant DC/AC breaker box that gives safe, quick shutoff and circuit protection for small solar arrays.

Designed for rooftop or ground-mounted photovoltaic setups, this compact enclosure combines a 40A DC/AC circuit breaker with an IP65-rated, flame-retardant housing and plug-and-play solar terminals. The box protects wiring from rain and dust, resists sunlight degradation, and provides a single point to isolate the solar circuit for maintenance or emergency shutoff. It supports a wide voltage range so it can be used across many solar, battery, and hybrid applications.

How does this breaker box protect my solar system?

The unit integrates a 40 Amp circuit breaker that trips on overload or short conditions to prevent damage to panels, inverters, and wiring. Its flame-retardant shell reduces fire risk, and the IP65-rated seal keeps moisture and dust away from live components.

• 40A breaker coverage for common small to medium PV strings
• V1 grade flame-retardant PC housing for improved safety
• IP65 waterproofing to resist rain, dust, and outdoor conditions
• Wide voltage compatibility for DC 12–400V and AC 90–400V systems

Will it work outdoors on a rooftop or in a solar kit?

Yes — the enclosure is built from UV-stable polycarbonate and rated IP65 for outdoor exposure. It’s intended for mounting near panels, combiner boxes, or inverter inputs where routine weather protection and isolation are needed.

• UV-proof PC material to minimize sunlight degradation
• Sealed design prevents water ingress during rain
• Compact footprint for rooftop or pole mounting
• Two sets of included solar terminals for fast connections

What voltages and polarities does it accept?

The breaker supports both DC and AC ranges, and the breaker itself is designed to be polarity-insensitive for easier wiring. It can protect either the positive/negative DC poles or the L/N poles on AC circuits within the rated ranges.

• DC rated voltage range: 12–400V
• AC rated voltage range: 90–400V
• No polarity requirement on the breaker for simplified installation
• Protects both + / - DC or L / N AC poles as applicable

How simple is installation and maintenance?

Installation is streamlined with plug-and-play solar terminals and clear terminal access inside the enclosure. Maintenance is limited to periodic visual inspection and ensuring terminals remain tight and weather seals intact.

• Includes two sets of solar terminals for quick hookups
• Screw terminals and internal layout for straightforward wiring
• Minimal routine upkeep — check seals and terminal torque
• Accessible breaker lever for fast manual disconnect

Who is this for: installers, DIY homeowners, and small-system integrators who need a reliable, weatherproof means to isolate and protect solar circuits. The DIHOOL 40A disconnect is suited for small off-grid arrays, battery-charge protection points, microinverter or string inverter inputs, and any situation that requires a compact, outdoor-rated breaker box with easy connections.