9W CCT LED Bulkhead Ceiling/Wall Light - Chrome IP65

The Knightsbridge BT9ACTCH is a 9W LED bulkhead light with adjustable colour temperature (CCT), switchable between 3000K warm white, 4000K neutral white and 5700K cool daylight via a selector on the hinged gear tray. The circular fitting has a 256mm diameter chrome-effect polycarbonate bezel surrounding an opal polycarbonate diffuser, which houses an integrated SMD LED array delivering 730-810 lumens depending on the selected CCT. The fitting carries an IP65 rating, making it weatherproof for external wall and soffit mounting as well as internal ceiling and corridor use.

Designed for commercial, industrial and multi-occupancy residential buildings, the bulkhead suits loading bays, car parks, stairwells, external doorways, communal corridors and utility areas where IP65-rated overhead or wall-mounted lighting is required. The low-profile 74mm projection minimises head clearance impact when ceiling-mounted in passageways under 2.4m height. The hinged gear tray allows access to the wiring terminals and CCT selector without removing the entire fitting from the ceiling or wall, and the push-fit terminal block accepts solid or stranded cable without screwdrivers.

The chrome-effect finish is applied to polycarbonate rather than metal, keeping the fitting lightweight (under 1kg) and resistant to UV degradation and salt corrosion in coastal or high-humidity environments. The Class II double-insulated construction means no earth connection is required, simplifying installation in older buildings where earthing may not be present at every lighting point. The non-dimmable constant-current driver is rated for 50,000 hours to L70B50, which equates to approximately 11 years at 12 hours per day operation before the LED output drops to 70% of initial brightness.

Product Specification Sheet

How do I change the colour temperature?

The CCT selector is accessed via the hinged LED gear tray inside the fitting. Switch between 3000K (warm white), 4000K (neutral white) and 5700K (cool daylight) using the selector switch before connecting mains power. The selection must be made before the fitting is energised and cannot be changed via an external switch once installed.

Can it be used outdoors?

Yes. The IP65 rating means the fitting is weatherproof and dust-tight, suitable for external wall mounting, soffit mounting under canopies, and exposed outdoor locations. The polycarbonate construction resists UV degradation and salt corrosion in coastal environments.

Is the bulkhead dimmable?

No. The constant-current driver does not support dimming. If dimming is required, consider alternative Knightsbridge bulkhead models with dimmable driver options.

What is the expected lifespan?

The LED is rated to L70B50 at 50,000 hours, meaning it will maintain at least 70% of its initial light output for 50,000 hours of operation. At 12 hours per day use, this equates to approximately 11 years before noticeable brightness degradation occurs.