The COMBI 310: a masterpiece in the making.
WISKA UK proudly introduces the COMBI 310, the latest addition to the iconic COMBI Junction Box range – designed directly from customer feedback and engineered for performance, protection and durability.
At the heart of its innovation is a unique configuration of three M20 threaded membrane side entries, giving electricians greater flexibility for looping connections and cable management than ever before. Combined with IP66/67 protection, robust materials and time-saving features, the COMBI 310 sets a new benchmark for junction box design.
Installer-driven innovation
The COMBI 310 was born from a conversation between WISKA and the electrical community. Customers told us they needed a box that could handle looping connections more efficiently, specifically a 3-sided junction box for outdoor lighting installation – so we designed exactly that.
With 10 x M20 threaded membrane entries, 4 rear membrane entries, the COMBI 310 gives electricians the flexibility they need across a wide range of applications — from outdoor lighting systems, HVAC systems and industrial control panels to solar and renewable energy installations.
Instant classic. built to last.
The COMBI 310 is designed for both indoor and outdoor use, delivering reliable performance in industrial, commercial or domestic environment. Whether it’s part of a larger installation or used as a standalone solution, the COMBI 310 offers versatility and resilience in equal measure.
Will Rich, WISKA UK managing director, said: “We see the COMBI 310 as a masterpiece – a product that blends installer-focused innovation with the highest standards of engineering. It’s the perfect addition to the COMBI range and destined to be an instant classic.”
Part of the trusted COMBI Junction Box range
The COMBI 310 carries forward the trusted reputation of the COMBI Junction Box Series – a range celebrated for quality, reliability and installer-friendly features. Like its predecessors, it combines a rugged, IP-rated solution with quarter-turn, self-retaining lid screws for faster, frustration free installs. This is a product that not only meets the standards set by the COMBI name – it builds upon them. A unique junction box that no other manufacturer can offer.
Earth bar capability for SWA installations
For installations using Steel Wired Armoured (SWA) cables, the COMBI 310 can be fitted with a unique COMBI 310 earth bar mounted to the three M20 side entries, or our E-SPRING earthing springs allowing secure and compliant earthing directly within the enclosure. When paired with WISKA’s IP68-rated ShieldGLAND, this creates a robust solution that’s ideal for challenging environments and outdoor applications. This combination provides both mechanical protection and electrical safety, making it the perfect choice for outdoor installation.
Gel-ready for maximum protection
The COMBI 310 is also fully compatible with the WISKA Gel Range, including the MP One 300ml, which is the perfect quantity to fill the enclosure. Using the gel increases the protection rating from IP66/67 to IP68, making the enclosure suitable for underground or direct burial applications. This added capability ensures even greater longevity and reliability, especially in demanding or exposed environments.
Compact size. Big capability
Measuring just 118 × 85 × 51 mm, the COMBI 310 delivers generous internal space for connections, including an additional 10% belly space compared to similar enclosures. It’s made from halogen-free, flame-retardant polypropylene with a twin-shot TPE seal for maximum durability. Its quarter-turn, self-retaining lid screws make installation quick and frustration-free, while its corrosion resistance ensures long life in the harshest environments. Available empty or with 3 x 3-Pole WAGO 221 Lever Connectors and in a choice of black, grey or white to suit your project or requirement.
Key features:
- IP66/67 protection rating
- 10 × M20 threaded membrane entries
- 3 x M20 threaded membrane entries on the sides
- 4 rear membrane entries
- Flame retardant, corrosion resistant, halogen free materials
- Quarter-turn, self-retaining lid screws
- 10% additional space (thanks to the belly design)
- Available with 3 x 3-Pole WAGO 221 Lever Connectors
- 3-way unique earth bar available for SWA
- Available in grey, white and black
- Gel Filler Guide: 300ml
A true masterpiece
The COMBI 310 is more than just a junction box – it’s the perfect harmony of form, function and feedback. Every curve, every feature and every entry point has been carefully considered to meet the needs of modern installers while upholding the proud heritage of the WISKA and COMBI Junction Box name. It is the culmination of decades of design expertise, rigorous testing and an unwavering commitment to quality.
Just like a timeless work of art, the COMBI 310 is built to be admired, trusted and used for generations to come. A masterpiece – engineered for those who demand the very best.
