Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s) - SX6s Midget Flanged Base Lamps
APPROVED VENDORSX6s Midget Flanged Base Lamps

APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s)

The APPROVED VENDOR Incandescent Bulb is a T1-3/4 tubular incandescent lamp with a Single Contact Midget Flanged (SX6s) base. It operates at 28V AC and has a Trade Number of 387, producing white light. This bulb is…

SKU 3G-OTH-386821

Brand
APPROVED VENDOR
Item
Incandescent Bulb: Incandescent, Single Contact Midget Flanged
Category
SX6s Midget Flanged Base Lamps
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
21U566
Type
Single Contact Midget Flanged (SX6s), (T) Tubular
Voltage
28V AC
Bulb Shape
T1-3/4
Light Color
White
Trade Number
387
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

APPROVED VENDOR Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The APPROVED VENDOR Incandescent Bulb is a T1-3/4 tubular incandescent lamp with a Single Contact Midget Flanged (SX6s) base. It operates at 28V AC and has a Trade Number of 387, producing white light. This bulb is designed for use in indicator or pilot-light applications requiring a compact, low-voltage light source.

Frequently Asked Questions

What is the APPROVED VENDOR 21U566 incandescent bulb used for?

The APPROVED VENDOR 21U566 is a T1-3/4 tubular incandescent lamp with a Single Contact Midget Flanged (SX6s) base, designed for indicator or pilot-light applications in control panels, instrumentation, and industrial equipment requiring a compact 28V AC white light source.

What are the specifications of the APPROVED VENDOR 21U566 bulb?

The APPROVED VENDOR 21U566 is a T1-3/4 tubular incandescent bulb with a Single Contact Midget Flanged (SX6s) base, operating at 28V AC. It produces white light and carries Trade Number 387. The manufacturer part number is 21U566.

Where to buy the APPROVED VENDOR 21U566 bulb worldwide?

3G Electric supplies the APPROVED VENDOR 21U566 incandescent bulb worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us to order this T1-3/4 SX6s base lamp for your indicator applications.

How to select the correct replacement for an SX6s base indicator bulb?

To select the correct replacement, match the base type (Single Contact Midget Flanged SX6s), voltage (28V AC), and bulb shape (T1-3/4). The APPROVED VENDOR 21U566 with Trade Number 387 is a direct replacement for many industrial pilot-light applications requiring a compact white incandescent source.

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 sx6s midget flanged base lamps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 21U564). Key specifications — Voltage: 28V AC; Trade Number: 385; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 21U564). Key specifications — Voltage: 28V AC; Trade Number: 385; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 21U557). Key specifications — Voltage: 28V AC; Trade Number: 327; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 21U557). Key specifications — Voltage: 28V AC; Trade Number: 327; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 330-1PK). Key specifications — Voltage: 14V AC; Trade Number: 330; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 330-1PK). Key specifications — Voltage: 14V AC; Trade Number: 330; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 381-10PK). Key specifications — Voltage: 6.3V AC; Trade Number: 381; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 381-10PK). Key specifications — Voltage: 6.3V AC; Trade Number: 381; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.

More from APPROVED VENDOR

View all APPROVED VENDOR parts →
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 387-10PK). Key specifications — Voltage: 28V AC; Trade Number: 387; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 387-10PK). Key specifications — Voltage: 28V AC; Trade Number: 387; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 327-10PK). Key specifications — Voltage: 28V AC; Trade Number: 327; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 327-10PK). Key specifications — Voltage: 28V AC; Trade Number: 327; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 330-10PK). Key specifications — Voltage: 14V AC; Trade Number: 330; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 330-10PK). Key specifications — Voltage: 14V AC; Trade Number: 330; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 382-1PK). Key specifications — Voltage: 14V AC; Trade Number: 382; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 382-1PK). Key specifications — Voltage: 14V AC; Trade Number: 382; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 376-10PK). Key specifications — Voltage: 28V AC; Trade Number: 376; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 376-10PK). Key specifications — Voltage: 28V AC; Trade Number: 376; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 21U558). Key specifications — Voltage: 6V AC; Trade Number: 328; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 21U558). Key specifications — Voltage: 6V AC; Trade Number: 328; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 338-10PK). Key specifications — Voltage: 2.7V AC; Trade Number: 338; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 338-10PK). Key specifications — Voltage: 2.7V AC; Trade Number: 338; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 385-10PK). Key specifications — Voltage: 28V AC; Trade Number: 385; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Single Contact Midget Flanged (SX6s), (T) Tubular (MPN 385-10PK). Key specifications — Voltage: 28V AC; Trade Number: 385; Brand: APPROVED VENDOR; Bulb Shape: T1-3/4; Light Color: White.