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APPROVED VENDOR Incandescent Bulb: Incandescent, Miniature Bayonet (BA9s), (T) Tubular - BA9s Single-Contact Miniature Bayonet Base Lamps
APPROVED VENDORBA9s Single-Contact Miniature Bayonet Base Lamps

APPROVED VENDOR Incandescent Bulb: Incandescent, Miniature Bayonet (BA9s), (T) Tubular

The APPROVED VENDOR Incandescent Bulb is a BA9s single-contact miniature bayonet base lamp with a T2-1/2 tubular bulb shape. It operates at 28V AC, produces white light, and carries the trade number 28MB (MPN 21U506).

SKU 3G-OTH-385133

Brand
APPROVED VENDOR
Item
Incandescent Bulb: Incandescent, Miniature Bayonet
Category
BA9s Single-Contact Miniature Bayonet Base Lamps
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Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
21U506
Type
Miniature Bayonet (BA9s), (T) Tubular, T2-1/2, 28MB
Voltage
28V AC
Bulb Shape
T2-1/2
Light Color
White
Trade Number
28MB
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APPROVED VENDOR Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The APPROVED VENDOR Incandescent Bulb is a BA9s single-contact miniature bayonet base lamp with a T2-1/2 tubular bulb shape. It operates at 28V AC, produces white light, and carries the trade number 28MB (MPN 21U506).

Frequently Asked Questions

What is the APPROVED VENDOR 28MB incandescent bulb used for?

The APPROVED VENDOR 28MB incandescent bulb is used as a replacement lamp in industrial indicator lights, panel displays, and control systems that require a BA9s miniature bayonet base. Its 28V AC rating and T2-1/2 tubular shape make it suitable for machinery, switchgear, and instrumentation where white light indication is needed.

What are the specifications of the APPROVED VENDOR 21U506 bulb?

The APPROVED VENDOR 21U506 is a BA9s single-contact miniature bayonet base incandescent bulb. It has a T2-1/2 tubular bulb shape, operates at 28V AC, produces white light, and carries the trade number 28MB. This lamp is designed for reliable illumination in industrial control panels and signal applications.

Where to buy the APPROVED VENDOR 28MB bulb worldwide?

You can source the APPROVED VENDOR 28MB bulb through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply genuine APPROVED VENDOR components for industrial maintenance and repair needs.

How to select the correct BA9s incandescent bulb for replacement?

To select the correct BA9s incandescent bulb, match the voltage (28V AC for the 28MB), base type (BA9s miniature bayonet), bulb shape (T2-1/2 tubular), and trade number. Verify the application's socket size and operating voltage. The APPROVED VENDOR 21U506 is a direct replacement for 28MB lamps in industrial indicator and panel light systems.

Used in

Common applications for APPROVED VENDOR
Laboratory sampling — APPROVED VENDOR clear wide mouth glass bottles for collecting and storing liquid samples in non-sterile environments.
Steam heating maintenance — APPROVED VENDOR forged brass radiator valves for regulating steam flow in commercial building heating systems.
High-pressure cleaning — APPROVED VENDOR turbo spray nozzles for pressure washers used in industrial equipment cleaning up to 6,000 psi.
Cleanroom operations — APPROVED VENDOR vinyl task chairs for seating in ISO 5 classified manufacturing or assembly areas.
General sealing — APPROVED VENDOR natural rubber stoppers for closing laboratory flasks or test tubes in educational or research settings.
Tamper-evident security — APPROVED VENDOR brass lead and wire seals for securing utility meters, cargo containers, or access panels.

APPROVED VENDOR Products

3G Electric supplies APPROVED VENDOR ba9s single-contact miniature bayonet base lamps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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