Mollom 6 Way Power Distribution Box with Bus Bars and Din Rail for Miniature Circuit Breaker MCB, Waterproof IP66.Padlock Available for Indoor and Outdoor Use

Why I picked this box

I needed a compact, weather-sealed enclosure to organize a handful of DIN‑rail breakers and a small control module on an outdoor project. The Mollom 6‑way distribution box hit the right notes on paper: IP66 weather resistance, a clear viewing window, integrated DIN rail, and included neutral/ground bus bars in a footprint that wouldn’t dominate the wall (165 x 200 x 100 mm). I used it to house six modules’ worth of gear: a pair of DIN‑rail breakers, a small contactor, and a surge protector for a small outbuilding circuit that lives on the weather side of a shed. After installing and wiring it up, here’s how it fared.

Build and weather protection

The enclosure is PC+ABS, and it feels consistent with other light-duty industrial boxes in this size class: rigid enough not to flex during mounting, but it’s still plastic—don’t expect the heft of a metal panel. The lid seals to the base with an even gasket, and the screw compression makes good contact all the way around. With the cover seated, spray tests with a hose and a couple of surprise downpours didn’t produce moisture inside. IP66 claims held up in my use.

A few touches I appreciated:
- The clear window lets you read breaker positions or indicator LEDs without opening the cover.
- The window has spring‑loaded latches you pinch to swing it open; you can add a small padlock to discourage casual access.
- Impact resistance is stated at IK08, which aligns with the feel—fine for typical residential and light commercial environments, but don’t abuse it.

UV exposure inevitably ages plastics. I haven’t seen yellowing yet, but I’d still mount it under an eave or use a sunshade if you can. The stainless steel hardware is appropriate for outdoor use.

Layout and capacity

This is a true 6‑module enclosure. Standard 18 mm‑wide MCBs line up cleanly on the included DIN rail, and the spacing in front of the rail is adequate for breaker toggles and labels behind the window. Behind the rail, you have enough depth for modest wire loops; if you plan on bringing in several heavy‑gauge conductors, the bends get tight fast.

The included bus bars (in snap‑in carriers) are sized for neutral and protective earth. They pop into the back of the enclosure and provide enough ways for small projects. There isn’t a dedicated phase distribution block in the kit. If you need to feed multiple phases or branch a single phase to several breakers, plan on adding your own compact distribution block on the rail.

In practice, six modules go quickly once you add a surge protector or a contactor. For breaker‑only builds (e.g., a small sub‑circuit panel, low‑power EVSE control, or a solar accessory block), capacity is spot‑on.

Installation experience

Mounting the box was uncomplicated:
- The base shell gets anchored to the wall first. Four screws and oversized washers into anchors made for a solid, rattle‑free mount.
- There are no knockouts. You get smooth wall surfaces with faint marks you can use as a guide, but you must drill your own holes. A step bit was the easiest way to size entries for glands and conduit.
- Two waterproof cable glands are included. I used those on the bottom and added two more (not included) on top to keep the water path vertical.

A few practical notes from the install:
- Mark and drill all entries before you mount the base; it’s much easier to deburr and clean the enclosure on the bench.
- After popping in the bus bar carriers, press each bar fully into its saddle; one of mine needed a firm thumb press to seat flush.
- The front cover screws are self‑tapping into plastic bosses. They bite well initially, but I wouldn’t plan on opening and closing the cover weekly—frequent cycles will eventually wear threads. If you anticipate regular access, consider threaded inserts or a different enclosure style.
- Top and bottom entries are straightforward. Side entries are possible but more cramped, and rear entry isn’t practical without compromising the seal or structure.

Once the components were on the DIN rail, wiring went cleanly. I was able to route conductors with neat radiuses and keep the front clear so the window closes without pinching. If you’re working with stiff PV wire or multiple 10 AWG conductors, expect a tight fit; pre‑plan your gland locations to align with breaker positions.

Usability and safety

The clear window is genuinely useful; you can visually verify breaker states or read an indicator on a small meter without exposing the interior. The padlock point is small, but it accepts a standard 3/16 in shackle.

The box arrived with a gasket intact and uniform. After landing wires and tightening glands, I ran a quick vacuum and towel test for dust ingress and saw none. Outdoors, the box has shrugged off wind‑driven rain so far. If the enclosure is exposed, a downward‑facing cable path with drip loops preserves the IP rating in real conditions.

Regulatory markings are something to pay attention to. The enclosure references a test report number, but I didn’t see prominent third‑party certification marks on the housing itself. Depending on your jurisdiction and the scope of your project, you may need a UL/CSA/CE marked enclosure or a complete listed assembly. For homeowner projects, that requirement varies widely; for commercial jobs, assume you’ll need listed gear and verify with your AHJ (authority having jurisdiction) before you commit.

Where this box makes sense

• Small sub‑circuits in sheds, garages, pump houses, and outbuildings
• DIN‑rail breaker consolidation for low‑power solar accessories or DC circuits using DC‑rated MCBs
• Compact control assemblies (e.g., a contactor and a few protective devices) where a view window is helpful
• Environments that see dust, spray, or occasional wash‑downs

If you need:
- Frequent service access
- More than six modules
- Robust side/rear entries
- A heavy‑duty industrial enclosure with metal hardware throughout
…you’ll likely be better served by a larger or metal enclosure with knockouts and threaded inserts.

What I’d improve

• Add a small line/phase distribution block to complement the neutral and earth bars.
• Provide printable drilling templates or molded knockout centers to simplify clean conduit alignment.
• Use metal threaded inserts for the cover screws to extend service life with repeated access.
• Clarify certification/marking on the enclosure body for easier inspector sign‑off.

None of these are deal‑breakers for light‑duty use, but they’re worth noting as you plan a build.

Tips for a clean install

• Use a step bit and a deburring tool for clean, round gland holes; avoid spade bits on plastics.
• Seat bus bar carriers fully and torque terminals to the manufacturer’s spec to avoid hot spots.
• Keep entries to the bottom/top wherever possible to maintain the IP66 rating.
• Label breakers before closing the lid; the window keeps labels readable without opening.
• If the box sees full sun, consider a shade or lighter wire colors inside to reduce heat soak.

The bottom line

The Mollom 6‑way distribution box is a thoughtfully sized, weather‑tight enclosure that does exactly what a small outdoor DIN‑rail panel should do: hold a handful of breakers or controls, keep out dust and water, and let you check status at a glance. The materials and fit are appropriate for residential and light commercial tasks, and the included DIN rail and bus bars make it a quick path from parts to a working assembly.

Space is at a premium once you start stacking larger modules and heavier wires, and the absence of knockouts means you’ll spend a little time measuring and drilling. It’s not the enclosure I’d pick for frequent access or abusive environments, and if you need a specific certification mark visible on the box, confirm that before installation.

Recommendation: I recommend this box for compact, light‑duty distribution and control projects where IP66 protection and a clear window are priorities, and where six modules are truly enough. It’s a solid value for tidy, weather‑resistant builds. If your application demands frequent servicing, larger wire handling, side/rear entries, or formal third‑party certification on the enclosure, step up to a larger, metal, or listed panel instead.