Sapphire Energy
PV Circuit Breaker Enclosure IP65
PV Circuit Breaker Enclosure IP65
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A compact, gasket-sealed DIN breaker enclosure designed for clean PV disconnect / isolation installs. Holds standard DIN-style breakers (up to 2) and includes a metal DIN rail, mounting hardware, and cable seals. The clear flip-up cover lets you see the breaker handle position easily.
Often referred to as a PV breaker box or solar breaker panel, this enclosure provides a compact, sealed way to mount DIN-style breakers for PV disconnect and isolation.
If you’d rather skip sourcing a breaker, grab the ready-to-install kit with a 32A 2-pole DC MCB already fitted in a weatherproof enclosure.
- Clean PV disconnect point — ideal as a service disconnect / isolation point before your charge controller
- Clear flip-up cover — easily see breaker ON/OFF status without opening the enclosure
- IP65-rated design — rubber gasket seals help keep out water and dust
- Metal DIN rail included — stronger and more durable than molded plastic versions
- Safely mount your breaker without live parts exposed
This housing is made to give you a clean, protected location for a DIN-style DC breaker that acts as your PV disconnect. In a typical solar setup, the breaker is installed on the positive PV feeder right before the solar charge controller — so you can shut PV power off quickly for maintenance, troubleshooting, or safe wiring changes.
Often referred to as a PV breaker box or solar breaker panel, this enclosure provides a compact, sealed way to mount DIN-style breakers for PV disconnect and isolation.
- Where it goes: PV panels → breaker enclosure → charge controller PV input
- Why it matters: a proper disconnect makes service safer and reduces “live wiring” moments
- What you choose: this is a housing only — pick the breaker rating that matches your PV setup
Indoors is best for long-term reliability of electrical components like breakers. If installed outdoors, use appropriately rated components and protect the enclosure from direct sun and harsh exposure when possible.
Bottom entry is strongly recommended for dusty/wet environments. Top entry can void IP65 unless a sealed cable gland with a proper O-ring is used and installed correctly.
| Breaker Positions | 1 × 18 mm, 2 × 18 mm, or 1 × 36 mm (DIN style) |
|---|---|
| Breaker Mounting | Metal DIN rail |
| Cover | Clear flip-up cover |
| Seal | Rubber gaskets |
| Ingress Rating | IP65 |
| Cable Entry | Top, Bottom |
| Dimensions [ L x W x H ] |
121mm x 51mm x 93mm 4-3/4″ × 2″ × 3-11/16″ |
| Weight | 132g |
| Breaker | Not included |
- Breaker housing with clear flip-up cover
- Rubber gasket seal
- Metal DIN rail
- Mounting screws
- Drywall anchors
- 2 × rubber cable seals
Bring your PV feed cleanly into the breaker enclosure before the charge controller.
What is this enclosure used for?
This enclosure is designed as a PV disconnect / isolation housing for DIN-rail circuit breakers. It’s commonly used to house a DC breaker on the positive PV feeder cable, installed just before the solar charge controller, providing a clean and accessible disconnect point.
Do I need MC4 Extension Cables For This?
NO. Generally you want to have as few connections as possible, to limit points of failure or heating.
It's recommended to skip 'extension' type wiring that uses MC4s at the breaker. Simply wire direct to the breaker terminals and avoid possible wiring failures.
My Breaker is Larger. Will it Fit?
Depends. Many solar systems use a 2-pole breaker, which is twice as wide as the single DIN style shown in the photos. So long as your breaker is no larger than 36mm wide, it will likely fit.
Feel free to contact us, and we can help you determine if it will fit before you buy.
What breaker sizes does it support?
The enclosure supports:
• 1 × 18 mm DIN breaker
• 2 × 18 mm DIN breakers
• 1 × 36 mm DIN breaker
This makes it suitable for single-string or small multi-string PV systems.
Is this enclosure waterproof?
The enclosure features a rubber gasket–sealed, flip-up cover and is rated IP65 when installed correctly.
Bottom cable entry maintains the IP65 protection when properly sealed. Top cable entry is allowed, but will void IP65 unless a sealed cable gland with a proper O-ring is used. Always ensure openings are sealed to maintain protection.
Is this suitable for outdoor installation?
The enclosure itself is weather-resistant, but for best long-term reliability of electrical components, indoor installation is recommended whenever possible.
If installed outdoors, ensure proper cable sealing, use breakers rated for the environment, and protect the install from direct sun and extreme temperatures when possible.
Can I see the breaker status without opening the enclosure?
Yes. The clear flip-up cover allows you to easily see the breaker position (ON/OFF) without opening the enclosure.
How is the enclosure mounted?
The enclosure includes mounting screws and drywall anchors. It mounts directly to walls, panels, or backing boards. The housing opens easily using two screws for straightforward access to wiring and breaker changes.
What’s included in the box?
Included: breaker housing with clear flip-up cover, rubber gasket seal, metal DIN rail, mounting screws, drywall anchors, and 2× rubber cable seals (end user drills holes to suit cable size).
Not included: circuit breaker. Cable glands (if required for top entry) are also not included.
Why use a breaker enclosure instead of wiring directly to the controller?
Using a dedicated PV breaker enclosure provides a proper PV disconnect point, makes servicing safer and easier, keeps wiring organized and protected, and supports best-practice expectations for isolation and maintenance.
Most charge controllers require you to disconnect the solar array before you disconnect battery power. Having a PV disconnect makes this step fast, safe, and easy.
What cables do I need with this enclosure?
This enclosure pairs well with standard PV wiring up to 8 AWG. Most solar arrays are wired with 10 AWG PV cables, used to bring the PV feed into the breaker before the charge controller.
Can this be used for AC breakers?
Yes. This enclosure is intended for DIN-style breakers, but suitability depends on the breaker installed and the application. It is most commonly used for DC PV systems. Always ensure the breaker itself is rated for your voltage, current, and use case.
Is This The Same as a Combiner?
Not really. Combiner boxes generally include busbars or ways to gather multiple PV circuits in parallel. This is compact and intended for 1-2 breakers, generally with positive wiring only.
For small systems with only 2 arrays, you can adapt this box for combining, but will likely need additional components. Please contact us for help.
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