ABB Inora 4 Gang 2 Way 10AX Switch Classic Grey BL108-G

The 10AX marking indicates that the switch is rated for switching lighting loads up to 10A under the applicable test conditions, including certain loads with higher starting currents than conventional resistive lamps. Actual suitability depends on the lamp type, LED driver, ballast, inrush current and circuit design. Contractors should check the connected load and manufacturer data rather than selecting the switch solely from the total lamp wattage.

Each gang normally provides a common terminal and two switched traveller terminals. When one gang is paired with another two-way switch and wired correctly, the same lighting circuit can be turned on or off from either location. This arrangement is commonly used for staircases, corridors, bedrooms, villas and rooms with more than one entrance. The four gangs can serve four independent circuits; they do not combine into a four-way switching function.

A two-way switch can generally be configured for one-way operation by using the common terminal and one appropriate switched terminal. This allows each gang of the BL108-G to control one lighting circuit from a single location. Terminal identification and the ABB wiring instructions should always be followed, and installation should be completed by a qualified electrician.

This switch is suitable for locations where several lighting zones must be controlled from one point, such as villa entrances, living rooms, hotel rooms, offices, meeting rooms, retail units, corridors and apartment interiors. Its two-way capability is particularly useful beside staircases, at opposite ends of hallways and in rooms with multiple access points. Designers should confirm the required number of circuits during the electrical layout stage.

UAE buildings commonly use a nominal 230V, 50Hz single-phase supply for lighting and general low-voltage circuits. The switch must only be used where its ABB-specified voltage, current and load ratings match the project supply. Compliance documentation, approved-product requirements and installation rules should be checked against the relevant local authority, project specification and applicable UAE electrical regulations before installation.

It may be used with compatible LED lighting circuits, but LED drivers can produce high inrush currents that are not represented by steady-state wattage alone. The electrician or lighting designer should verify the number of drivers, their inrush characteristics and the switch manufacturer's load guidance. For large LED groups or high-inrush commercial loads, a suitably rated relay or contactor may be required instead of switching the full load directly.

Isolate the circuit at the distribution board, apply safe lockout procedures where required and prove the conductors are dead with an approved tester. Confirm the back box, mounting points and cable capacity are compatible with the BL108-G. Connect the permanent live, switched lives and two-way traveller conductors according to the terminal markings and ABB instructions. Terminate the protective earth correctly, secure all connections, mount the switch without trapping cables and test polarity, continuity, insulation and operation before energising.

Contractors should verify the switch plate dimensions, fixing-centre arrangement, required box type and minimum box depth from the current ABB technical datasheet. The box must provide enough space for four sets of conductors and any two-way traveller cables without sharp bends or overcrowding. Cable entries, conduit alignment and box level should be coordinated before plastering, tiling or final wall finishing.

A conventional mechanical lighting switch normally switches the live conductor and usually does not require a neutral at the switch mechanism. However, the exact terminal arrangement must be confirmed from the BL108-G markings and ABB instructions. UAE projects may also require neutral conductors at switch points for future controls or smart devices, depending on the consultant's specification and local wiring requirements.

The product should not be assumed suitable for direct outdoor exposure, bathrooms, wash areas or dusty construction environments unless ABB specifies an appropriate IP rating for the complete installation. In damp, dusty or external locations, use a compatible weatherproof enclosure or an appropriately IP-rated wiring accessory. Required protection zones and local electrical regulations must also be observed.

Cable size and protective-device rating must be selected from the circuit load, installation method, ambient temperature, grouping, voltage drop and fault protection requirements. The switch's 10AX rating must not be treated as permission to exceed the conductor or circuit protection limits. A qualified electrical professional should design the lighting circuit in accordance with the project specification and applicable UAE wiring regulations.

Keep the switch mechanism protected from cement dust, paint, plaster, moisture and impact until final fixing. Back boxes should be installed square, at the specified finished-wall depth and coordinated with tiles, decorative panels and joinery. Do not use switch terminals as temporary construction power points, and complete insulation and continuity testing before fitting the finished Classic Grey faceplate.

Common symptoms include operation from only one position, inconsistent switching or one light remaining permanently on or off. Typical causes are an incorrectly identified common conductor, crossed traveller wires, loose terminals or an unsuitable paired switch. The circuit should be isolated and tested by a qualified electrician using the wiring diagram and suitable test instruments; live trial-and-error rewiring should never be attempted.

Confirm the model number BL108-G, four-gang configuration, two-way function, 10AX rating and Classic Grey finish. Also verify the required quantity, compatible back box, matching ABB Inora accessories, project colour schedule and load requirements. For consultant-specified projects, request the current technical datasheet and any necessary conformity or approval documents before procurement.