The Miniature Signal BA9s 3W 220V Incandescent Lamp is a specialist miniature filament lamp designed primarily for indication, signalling, control-panel, and equipment applications rather than conventional area lighting.
Its BA9s miniature bayonet base measures approximately 9mm in diameter and uses two opposing locating pins together with a single electrical contact at the bottom of the lamp.
Operating directly from a 220V supply, the small 3W incandescent filament produces approximately 5 lumens of warm light. This intentionally low output makes it particularly suitable for indicator windows, illuminated controls, signalling devices, and equipment where the lamp needs to be visible without providing general illumination. A comparable BA9s T9 × 23mm specification is rated at 5 lumens, 2700K and approximately 2,000 hours.
Use Cases / Applications
Ideal for specialist indication and equipment applications, including:
- Electrical control panels
- Industrial switchgear
- Control switches
- Signalling devices
- Indicator lights
- Machinery
- Process-control equipment
- Instrument panels
- Electrical equipment
- Laboratory equipment
- Older industrial equipment
- Compatible BA9s indicator fittings
Key Benefits
- Compact BA9s miniature bayonet base
- Direct 220V operation
- Low 3W power consumption
- Approximately 5 lumen output
- Instant full brightness
- Warm incandescent illumination
- Compact tubular construction
- Ideal for indication and signalling
- Useful replacement for legacy industrial equipment
- Widely established miniature industrial lamp format
The BA9s format remains particularly useful as a replacement lamp because large amounts of older industrial equipment, switchgear, control panels, and signalling hardware were originally designed around miniature filament lamps of this type.
Safety Compliance
- Designed for approximately 220V AC
- Use only in compatible BA9s lamp holders
- Confirm voltage before installation — physically similar BA9s lamps exist in many different voltages
- Do not substitute a 6V, 12V, 24V, 110V or 130V BA9s lamp
- Isolate electrical equipment before replacing the lamp
- Allow the lamp to cool before handling
- Confirm physical dimensions where installation space is restricted
- Not suitable for high-temperature oven applications
- Not intended as a conventional automotive replacement lamp despite the familiar miniature bayonet base
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- Primary Application: Indication & Signalling
- Typical dimensions: T9 × 23mm or T10 × 28mm depending on version
- Confirm voltage, wattage, BA9s base and physical dimensions before replacement
Specification
- Type: Miniature Incandescent Signal / Indicator Lamp
- Material: Precision Glass (G)
- Voltage: 220V
- Wattage:Â 3W
- Lamp Shape: Miniature Tubular
- Lamp Base: BA9s Miniature Bayonet
- Lamp Finish: Clear
- Color Temp: Warm White | 3000K
- Lumen: ±5Lm
- Energy Saving: No
- Brand: General Electric | Philips | Sparkie
- Warranty: Yes
- Nationwide Shipping
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