Wiska Boxes Distributors Wholesalers Free Delivery AT&T London

By Electrical Distributor 18 May 2026

Wiska Boxes

AT&T GB was founded by electricians for electricians, and we offer a stock holding of over 15,000 products and a logistics network that includes same-day delivery within the M25.

Available through AT&T’s extensive distribution network, Wiska boxes—specifically the COMBI and WIB ranges—are engineered for harsh environments. Whether you are wiring outdoor lighting in a garden or managing industrial power in a warehouse, these boxes offer IP66/67 protection, ensuring connections remain bone-dry and secure.

Wiska Box products

The current range has evolved to include smarter installation features like “push-fit” membranes and integrated terminal blocks. Key models include:

COMBI 206: The compact choice for tight spaces, featuring a 1/4 turn quick-release lid.
COMBI 308: The most popular all-rounder, often supplied with WAGO 221 connectors for rapid wiring.
COMBI 407: Features a unique elongated shape, ideal for more complex cable entries.
COMBI 1210: A heavy-duty solution for larger cable cross-sections and higher power requirements.
WIB Industrial Series: Large-scale enclosures with optional clear lids for inspecting internal components without breaking the seal.

Trade Quick Reference Guide

Feature	Trade Benefit
Bellied Lid	Provides 10% more internal wiring space—vital for bulky connections.
Integrated Thread	Allows for direct gland attachment without the need for locknuts.
Shatter-proof Plastic	High impact resistance ensures the box won’t crack if struck or dropped.
Quart-Turn Screws	Rust-free plastic screws that stay captive in the lid, saving time on ladders.

Wiska boxes are robust enclosures and often an option for electrical contractors looking for durability, ease of installation, and weatherproofing.

Wiska continues to innovate with its engineered thermoplastic enclosures, offering up to 10% more internal wiring room via their signature “bellied” lids. The latest lineup includes:

COMBI 206:** A compact, low-profile rectangular box featuring 6 combined threaded/membrane entries, making it excellent for space-restricted installs.
COMBI 304:** A specialized circular box with 4 entries, optimized for aesthetic architectural wiring and quick terminal integration.
COMBI 308:** The industry-standard 85x85mm square box, available as an empty shell or pre-loaded with Wago 221 connectors.
COMBI 407 & 607:** Larger, high-amperage junction boxes designed with deep profiles to house bigger conductors and intricate terminal blocks.
KonnektIT:** An innovative, maintenance-free internal connection box featuring unique slide-in entry gates specifically tailored for tool-free Wago inline installations.
WIB Series:** Smooth-sided, heavy-duty industrial adaptable boxes equipped with tamperproof seals for maximum security.

All exterior COMBI boxes feature dual-component self-sealing diaphragms. You can pierce the membrane directly for an instant tool-free IP66 seal, or screw a standard cable gland straight into the thread—no locknut required—to upgrade the assembly to an airtight IP67 rating.

The dual-component membrane and threaded functionality of the COMBI series is reputed to save contractors up to 30% on installation labor.

Visit or contact any of our branches for trade pricing and immediate collection:

London
Reading
Brentford
Chelmsford

Wiska Supplier & Distributor

All Major Electrical Brands in Stock

Electrical Product Ranges

We support companies requiring electrical products and services in whatever market sector they operate. We know the needs of a facilities management company differ greatly from those of a commercial electrical contractor or a domestic installer. That’s why we keep large stock holdings and why our sales teams, processes and logistics are set up to respond to whatever your business needs.

That’s why we keep large stock holdings and why our sales teams, processes and logistics are set up to respond to whatever your business needs.

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