E10 Bulb Screw Type Filament Bulb 6.3V to 220V Auspicious

The Auspicious E10 bulb is a clear screw type filament bulb used inside panel indicators and illuminated push buttons. The E10 base is the small screw fitting found in most indicator light bodies, so this is the replacement lamp when an indicator stops lighting but the holder and lens are still good.

It is sold in five voltages, so you can match the bulb to whatever the circuit actually supplies rather than adding a step down supply. Low voltage control panels use the 6.3V, 12V or 30V versions, while 130V and 220V cover panels that indicate straight from the mains supply.

Being a filament bulb, it is not polarity sensitive and works on both AC and DC at its rated voltage. That makes it a straightforward swap in older panels that were never wired for LED lamps, where fitting an LED would mean changing the holder as well.

Key Features

• Standard E10 screw base fits common indicator and push button holders

• Clear filament bulb for use behind coloured lenses

• Five voltage options from 6.3V up to 220V

• Works on AC and DC with no polarity to observe

• Direct replacement in existing panels with no rewiring

• Made in Taiwan by Auspicious

Specifications

How to Choose the Right Voltage

Match the bulb to the voltage reaching the indicator, not the panel incomer. A 220V panel often runs its indicator circuit from a 24V control transformer, in which case the 30V bulb is the correct choice rather than the 220V one. If you are unsure, measure across the lamp terminals with the circuit live before ordering.

Fitting a bulb rated below the supply will blow it immediately. Fitting one rated above will leave it dim or unlit.

Where This Bulb Is Used

This bulb goes into panel indicator lights and illuminated push buttons that use an E10 screw holder. If your holder is a bayonet push and twist fitting instead of a thread, you need the BA9s filament bulb rather than this one, and the matching BA9s lamp holder is available separately if the holder itself has failed.

Where you would rather move away from filament lamps, the BA9s LED indicator bulb drops into a bayonet holder, and the panel mount LED light T2L replaces the complete unit with an IP65 LED body that needs no bulb at all.

If you are replacing the whole indicator rather than just the lamp, browse the indicators range, or go straight to 22mm indicators and 16mm indicators for a size match. For illuminated operators, see 22mm push buttons and the push button with indicator T2PLF, which combines a control and a lamp in one cutout.

For the full selection of lamps, lenses, buttons and indicator bodies, browse push buttons and emergency stop or the parent push buttons and indicators category.

Ordering

Qahraba supplies electrical contractors, panel builders and maintenance teams across the UAE and worldwide. Local orders ship in 1 to 2 working days, free above AED 250, or collect free from our Dubai store. Bulbs are usually bought in quantity for panel stock, so call or WhatsApp +971 52 913 9543 for box pricing.

FAQ,s

What is an E10 bulb?

E10 is a small screw base with a 10mm diameter thread. It is the standard fitting for indicator lights and illuminated push buttons on control panels.

Will this fit my indicator light?

It fits any holder made for an E10 screw base. If your holder uses a bayonet push and twist fitting instead of a thread, you need a BA9s bulb rather than an E10.

Which voltage should I order?

Order the voltage that reaches the lamp itself. Measure across the holder terminals if you are not sure, since many 220V panels run their indicators on a 24V control supply.

Does it work on AC and DC?

Yes. A filament bulb has no polarity, so it works on either at its rated voltage.

Why is the bulb clear and not coloured?

The colour comes from the lens in the indicator body, not the bulb. A clear bulb means the same lamp works behind a red, green, yellow or blue lens.

Can I fit an LED instead?

Not in the same holder in most cases. LED indicator lamps are polarity sensitive and usually come as a complete unit, so replacing a filament bulb with an LED normally means changing the indicator body too.