GU10 LED Bulb 5W 4000K Cool White 600lm Dimmable 60° — Integrated LED, No Bulb to Buy
A GU10 LED bulb at 5W, 600 lumens, 4000K cool white, with a 60° wide beam angle. Push-and-twist fit. Dimmable — compatible with LED trailing edge dimmers. Rated for 25,000 hours. Equivalent to a 50W halogen GU10. Integrated LED — no bulb to buy.
Technical specifications
| Light source | Integrated LED — fixed, non-replaceable |
| Cap type | GU10 — push-and-twist |
| Wattage | 5W — equivalent to 50W halogen |
| Luminous flux | 600lm |
| Colour temperature | 4000K — cool white |
| Beam angle | 60° — wide flood |
| Dimmable | Yes — trailing edge (LED) dimmer required |
| Voltage | 240V |
| Lifetime | 25,000 hours |
| Energy rating | A+ |
| Dimensions | ø50mm × H58mm |
GU10 LED Bulb 4000K — Dimmable, Wide Flood, Cool White Task Light
At 600lm from 5W, this bulb delivers more output than a typical 5W GU10 (380–520lm), a result of ThermoTec™ heat management and EnFiniti™ lens technology that maintain consistent output over the rated 25,000-hour life. The 4000K cool white tone is neutral and crisp — suited to kitchens, bathrooms, home offices, and task areas where visual clarity matters more than warm ambience. At 60° beam angle, light spreads broadly across the ceiling plane rather than spotting a single point, which reduces dark patches between fittings in multi-downlight circuits. Dimmable — compatible with LED trailing edge dimmers. Standard leading edge dimmers are not recommended and may cause flickering. If you are unsure what type of dimmer you have, check the switch plate: a trailing edge dimmer is usually labelled TE or LED. In a living room or bedroom, 4000K will feel clinical compared to 2700K or 3000K — it is not the right choice for atmospheric or relaxation lighting.
For a kitchen ceiling with multiple downlights, pairing 4000K wide flood bulbs with under-cabinet warm white strips gives task clarity at the worktop and atmosphere at eye level. Confirm the cap type is GU10 (push-and-twist, not GU5.3 or MR16) before ordering. Browse the full LED bulbs collection or read our indoor lighting guide.
Common questions
Is this a simple replacement, or does it need an electrician?
+
No electrician needed. This is a GU10 (push-and-twist) bulb — push in, twist to lock, switch on. If the fixture is already hardwired, replacing the bulb does not touch the circuit.
Which fittings does this work with?
+
Designed for GU10 (push-and-twist) fixtures — spotlights, downlights, and track fittings. Before ordering, check the cap type marked on your existing fixture or bulb. GU10 is not the same as GU5.3 or MR16 — the pin spacing and fitting mechanism differ. Browse our LED bulbs collection for other cap types and colour temperatures.
Can this be dimmed, and what dimmer switch do I need?
+
Yes — this bulb is dimmable. Use a trailing edge (LED-compatible) dimmer switch. Standard leading edge dimmers are not recommended and may cause flickering or buzzing. Trailing edge dimmers are usually labelled TE or LED on the switch plate. If you are unsure what type of dimmer you have, check the label or contact us before ordering.
Is 4000K suitable for a living room or bedroom?
+
4000K cool white will feel clinical in a living room or bedroom — it is not the right choice for atmospheric or relaxation lighting. For those spaces, 2700K extra warm white or 3000K warm white is more appropriate. 4000K is best suited to kitchens, bathrooms, home offices, and task areas where visual clarity matters more than ambience.
Is this a direct replacement for a 50W halogen GU10?
+
Yes — this 5W LED is the direct equivalent of a 50W halogen GU10 in lumen output (600lm vs the typical 500–600lm of a 50W halogen). The cap type is identical (GU10 push-and-twist), so it fits the same fittings. The colour temperature will differ from most halogens (which run at 2700–3000K) — this 4000K version produces a noticeably cooler, crisper light, which is the intended effect for task environments.
Browse the full LED Bulbs collection · Read our indoor lighting guide · Shipping policy · Returns policy — Free delivery on orders over €50.
