Spot Lamp - White - Rackhams - MR11

Pack of 10 MR11 halogen spot lamps, each rated at 20W and operating at 12V with a GU4 cap type. De...

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B&Q - 10 X Mr11 20W Halogen Spot Lamp 12V Gu4 Light Bulbs
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RackhamsRackhams Light 10 X Mr11 20W Halogen Spot Lamp 12V Gu4 Bulbs
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Product Information

Full details

This guide is for individuals and professionals seeking a reliable, cost-effective lighting solution. The Rackhams MR11 Spot Lamps offer a practical way to provide focused illumination for various applications, ensuring you have spares readily available. A key consideration is ensuring your existing fittings are compatible with the GU4 cap type.

All features

ColourWhite
Model Part NumberMR11
BrandRackhams

Extended Product Information

FAQs

What does MR11 mean?

MR11 refers to the bulb's shape and size. 'MR' stands for Multifaceted Reflector, and '11' indicates the diameter of the lamp face is approximately 11/8 inches (35mm).

What is a GU4 cap?

A GU4 cap is a type of lampholder base with two pins set apart by 4mm. It's commonly found on low-voltage halogen and some LED spot lamps.

Can I replace my 50W halogen lamps with these 20W ones?

You can, provided the wattage (20W) is suitable for your fixture and the cap type (GU4) matches. However, the light output will be lower than a 50W lamp. If you require equivalent brightness, consider a higher wattage MR11 or an LED alternative.

Are these lamps dimmable?

Halogen MR11 lamps are typically dimmable if connected to a compatible dimmer switch and a suitable low-voltage transformer. Check your fixture's specifications.

How should I dispose of old halogen bulbs?

Halogen bulbs can usually be disposed of with regular household waste. However, check local regulations as some areas may have specific recycling programs.

Can I use these outdoors?

These lamps are generally intended for indoor use unless explicitly stated otherwise by the fixture manufacturer. Outdoor fixtures require specific weatherproofing.

What is the lifespan of these lamps?

The lifespan of halogen lamps varies but is typically around 2,000 hours. This can be affected by usage patterns, voltage stability, and environmental conditions.

Troubleshooting

Lamp does not turn on

Ensure the power is switched on at the mains. Verify the lamp is correctly seated in the GU4 socket. Check if the fixture's transformer (if applicable) is functioning. Try a known working bulb in the same fixture to rule out a faulty lamp.

Lamp flickers intermittently

Check the connection between the lamp and the socket; ensure it's firm. A loose connection or a failing transformer can cause flickering. If the problem persists, consider replacing the transformer.

Lamp burns out quickly

Avoid touching the glass with bare hands during installation. Ensure the lamp is used in a fixture with adequate ventilation, as overheating can reduce lifespan. Verify that the fixture is not delivering excess voltage.

Pros and Cons

Pros

  • Cost-effective bulk pack
  • Provides focused directional lighting
  • Easy to install in compatible fixtures
  • Reliable performance for accent lighting
  • Standard specifications for broad compatibility

Cons

  • Halogen technology is less energy-efficient than LED
  • Specific GU4 cap type limits compatibility
  • Not suitable for applications requiring wide-angle diffusion
  • Can get hot during operation
  • Lifespan may be shorter compared to LED alternatives

Setup, Compatibility & Care

Setup:

  1. Ensure the power supply to the light fixture is switched off at the mains.
  2. Carefully remove the old MR11 bulb from the GU4 socket. This may involve gently pulling it out or releasing a retaining clip.
  3. Insert the new Rackhams MR11 lamp, aligning the pins with the socket holes and pushing gently until secure.
  4. Restore power to the fixture.

Compatibility:

  • Cap Type: These lamps feature a GU4 cap. Ensure your light fixture is designed to accept this specific pin configuration.
  • Voltage: Operates at 12V. Verify that your lighting system provides the correct voltage.
  • Fixture Type: Best suited for spotlight fixtures, track lighting, or recessed downlights designed for MR11 bulbs.

Care:

  • Always handle halogen lamps by the base or the plastic fitting, avoiding touching the glass with bare hands, as oils can cause premature failure.
  • If the glass needs cleaning, use a soft, dry or slightly damp cloth. Ensure the lamp is cool before cleaning.
  • Regularly check fixtures for dust or debris that might impede airflow, especially in enclosed fittings.

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