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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 T3-1/4 tubular bulb shape. It operates at 14.4V AC, produces white light, and carries the trade number 1892 (MPN 21U637).

SKU 3G-OTH-385263

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
21U637
Type
Miniature Bayonet (BA9s), (T) Tubular, T3-1/4, 1892
Voltage
14.4V AC
Bulb Shape
T3-1/4
Light Color
White
Trade Number
1892
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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 T3-1/4 tubular bulb shape. It operates at 14.4V AC, produces white light, and carries the trade number 1892 (MPN 21U637).

Frequently Asked Questions

What is the APPROVED VENDOR 21U637 incandescent bulb used for?

The APPROVED VENDOR 21U637 incandescent bulb is used as a replacement lamp in industrial indicator lights, panel meters, and control switches that require a BA9s miniature bayonet base. Its T3-1/4 tubular shape and 14.4V AC rating make it suitable for low-voltage signaling and pilot-light applications in machinery and equipment.

What are the specifications of the APPROVED VENDOR 21U637 bulb?

The APPROVED VENDOR 21U637 is a T3-1/4 tubular incandescent bulb with a BA9s single-contact miniature bayonet base. It operates at 14.4V AC, produces white light, and carries trade number 1892. The manufacturer part number is 21U637. This bulb is designed for low-voltage industrial indicator and pilot-light applications.

Where to buy the APPROVED VENDOR 21U637 bulb worldwide?

You can source the APPROVED VENDOR 21U637 incandescent bulb worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. 3G Electric supplies this bulb as part of our extensive industrial lighting portfolio.

How to select the correct BA9s incandescent bulb for replacement?

To select the correct BA9s incandescent bulb, match the base type (BA9s miniature bayonet), voltage (14.4V AC for the 21U637), bulb shape (T3-1/4 tubular), and trade number (1892). Verify the application's voltage and physical clearance. The APPROVED VENDOR 21U637 is a direct replacement for equipment requiring these exact specs.

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.
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High-pressure cleaning — APPROVED VENDOR turbo spray nozzles for pressure washers used in industrial equipment cleaning up to 6,000 psi.
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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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