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Learn more by watching our NLS 30303 | 4 Pole Surface Mount Distribution Board IP65 Rated video.
The NLS 30303 is a 4-pole surface mount distribution board rated IP65, designed for domestic and light commercial electrical installations. The 30303 features a transparent polycarbonate enclosure with weatherproof sealing and accommodates standard circuit protection devices and accessories. It is compact yet internally spacious, with a pre-installed din rail and rubber seal.
Site installations—sheds, offices, relocatable homes, caretaker properties—frequently specify weatherproof enclosures where moisture and dust exposure demand protection. The NLS 30303 fills this role with a focused design: surface mounting on external walls, a lockable door, and enough internal volume to land four poles of circuit protection without cramping the installer. Electricians value the balance between footprint and layout: width 103mm, height 205mm, depth 120mm keeps it off busy wall runs, but the internal space is generous. Site electricians and contractors stock these for quick job turnarounds on rural builds and outdoor shed work.
The 30303 delivers straightforward value for sheds and remote installations where a sealed, compact board is the practical choice. Site professionals appreciate the transparent door (so what's inside stays visible without opening), the lockable hinge, and the pre-drilled mounting block with screwed cable entries (25mm and 32mm adaptors included). The polycarbonate construction is UV stabilised and fire-resistant, meeting IEC standards, and the IP65 rating protects against water jets and dust ingress equally. For outdoor sites where climate control is not an option, the 30303 is a fit that doesn't require special ordering or lead time—stock-standard, good pricing, and fast dispatch from Sparky Direct.
The NLS 30303 is not suitable for submersion, high-temperature environments, or installations where internal humidity requires forced ventilation. Do not use the 30303 in locations requiring earth bars, neutral busbar distribution, or heavy industrial applications; its 4-pole configuration and compact busbar do not support large-scale power distribution or complex earthing schemes. The 30303 is rated for domestic and light commercial surface-mount board work only.
Verified Sparky Direct customer reviews: NLS 30303 | 4 Pole Surface Mount Distribution Board IP65 Rated (30303)
"Plenty of room, easy to raise the breakers" — Marky T
"Great price fast delivery" — Leigh
"great product, and very quick delivery" — JT
(30303)
The 30303 is supplied complete with the metal din rail pre-fitted and the rubber seal gasket already installed. The enclosure is ready for mounting to the wall and landing circuit protection devices directly onto the rail.
The 30303 accommodates most leading brands of single-pole and multi-pole circuit breakers (MCBs) and residual current devices (RCDs) that conform to standard din rail mounting widths. Before specifying, confirm the breaker width aligns with the enclosure's 4-pole capacity (1 open, 3 covered with pole fillers).
The 30303 is rated IP65, which means it blocks water jets and dust ingress but is not fully submersible. It is suitable for external walls, sheds, and damp exposed locations where splashing or rainfall occurs, but should not be installed in locations subject to continuous submersion or direct water spray from high-pressure cleaning.
Yes, the 30303 is a surface-mount board and mounts directly to external or internal timber, masonry, or steel surfaces using the enclosed mounting block and standard fixings. Confirm the wall type with your licensed electrician and use appropriate anchors for the material (masonry plugs for brick, screws for timber).
The 30303's compact footprint (103mm wide) and transparent door distinguish it from larger enclosures used in main switchboard or sub-board applications. It is purpose-built for site installations and remote sheds where space is tight but internal layout clarity matters. The transparent polycarbonate door allows visual inspection without opening, and the lockable design suits shared-use buildings and public access areas.
The gasket can roll if tightened unevenly. Seat the gasket evenly around the door perimeter before tightening, then tighten each screw alternately (top, bottom, left, right) in a cross pattern to maintain even pressure. This prevents the gasket from bunching or rolling out during installation.
No. The 30303 is designed for circuit protection distribution (MCBs, RCDs, and small switching devices up to around 32A per pole) and is not sized for main switches or 100A isolation. For main board applications, specify a larger multi-pole enclosure rated for the main service capacity.
The National Light Sources 30303 is available online from Sparky Direct, with Australia-wide delivery to any state or territory including regional areas. Sparky Direct is an Australian electrical wholesaler established in 2005, supplying more than 500,000 customers with transparent trade pricing.
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How to Request a Return
Warranty starts from Invoice Date
Domestic Use: 1 Year
Commercial Use: 1 Year
Warranty Method: Return to Sparky Direct
These specifications and characteristics outline physical, mechanical, electrical details.
| Brand | NATIONAL LIGHT SOURCES |
| SKU | 30303 |
| Model # | 30303NLS |
| Barcode # | 9336700006136 |
| Package Weight | 0.662kg |
| TYPE | VALUE |
|---|---|
| Type | Enclosures |
| Brand | National Light Sources |
| Range | WeatherX |
| Height (mm) | 205 |
| Width (mm) | 103 |
| Depth (mm) | 120 |
| Protection | IP65 |
| Mounting | Surface Mount |
| Material | Poly Carbonate |
| Number of Poles | 4 |
| Door | Transparent |
| Door Hinge Direction | Top Hinge |
| Earth Bar | No |
| Neutral Bar | No |
Electrical and HVAC products sold by Sparky Direct are intended for installation by licensed and appropriately qualified professionals in accordance with applicable Australian Standards and regulatory requirements. Customers are responsible for ensuring that any product purchased, including any related or associated components, is compatible and suitable for their intended installation and application.
Sparky Direct does not provide installation advice and does not assess product suitability for individual circumstances unless expressly confirmed in writing. Customers must confirm correct product selection, compatibility, compliance, and suitability with a licensed or appropriately qualified professional prior to purchase.
Tools sold by Sparky Direct must be used safely and in accordance with the manufacturer’s instructions. Customers are responsible for ensuring they have the necessary knowledge and competence to operate any tool purchased. If you are unsure how to safely or correctly use a tool, do not use it and seek guidance from the manufacturer or a suitably qualified professional.
Nothing in this clause limits or excludes any rights or guarantees available under the Australian Consumer Law.
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