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Miniature clear incandescent bulb with bayonet base

SIEMENS

SIEMENS 52AADN T3 1/4 Miniature Incandescent Light Kit

SKU CH-MN99-AW7QG

Miniature incandescent bulb with BA9s base for 24 V AC push-button applications, 2.2 W clear light

  • weight0.01
  • Miniature bayonet base fits push-button fixtures
  • 2 W incandescent output for low-power indication
  • 24 V AC rating matches control-panel circuits
  • Clear finish gives crisp, unfiltered light
  • Weighs only 0.01 kg for minimal fixture load

Miniature Incandescent Light Kit

The SIEMENS 52AADN T3 1/4 kit supplies a miniature incandescent bulb designed for push-button applications. It operates on a 24V AC circuit and uses a BA9s bayonet base for a secure connection. The clear finish and clear light colour provide direct illumination without diffusion. This new component weighs 0.01 units and carries trade number 52AADN.

Sustained Load Behaviour

The 2.2W incandescent filament reaches full brightness almost instantly when the push button is activated. Continuous operation maintains a steady 2.2W draw at 24V AC without the warm-up delay seen in some other technologies. Heat output remains constant for the duration of the button press, matching the rated wattage equivalency. The simple resistive element avoids flicker or driver-related instability over long duty cycles.

Build Quality and Connectors

The BA9s miniature bayonet base locks the bulb firmly into compatible sockets, resisting vibration in panel environments. A compact T3-1/4 envelope allows installation in tight indicator housings where larger lamps cannot fit. The clear glass envelope protects the filament while transmitting maximum light output for status indication. This construction suits industrial control panels and similar low-voltage signalling roles.

Highlights

  • Miniature bayonet base fits push-button fixtures
  • 2 W incandescent output for low-power indication
  • 24 V AC rating matches control-panel circuits
  • Clear finish gives crisp, unfiltered light
  • Weighs only 0.01 kg for minimal fixture load

Specifications

BrandSIEMENS
weight0.01

Questions about this item

How much heat does the 2.2 W miniature incandescent bulb produce when left on continuously?

At 2.2 watts the bulb generates only a small amount of heat, comparable to a standard indicator lamp, so it remains cool enough for extended use in push-button panels.

What voltage supply and socket type are required to operate the 52AADN bulb?

The bulb needs a 24 V AC source and a miniature bayonet (BA9s) socket to light up.

Will the T3-1/4 clear bulb fit the same BA9s holders used by older indicator lights?

Yes, the BA9s base matches the miniature bayonet holders found on legacy push-button and panel lights, so it drops in without modification.

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