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

OEM Approved Vendor 657-10PK T3-1/4 Wedge Base Incandescent Lamp, 28V AC - W2.1x9.5d Wedge Base Lamps
OEMW2.1x9.5d Wedge Base Lamps

OEM Approved Vendor 657-10PK T3-1/4 Wedge Base Incandescent Lamp, 28V AC

The APPROVED VENDOR Incandescent Bulb is a W2.1x9.5d Wedge Base Lamp with a T3-1/4 tubular shape. It operates at 28V AC and produces white light. The bulb carries Trade Number 657 and Manufacturer Part Number 657-10PK.

SKU 3G-OTH-386087

Also listed as: 65710PK · 657 10PK

Brand
OEM
Item
Approved Vendor 657-10PK T3-1/4 Wedge Base Incandescent Lamp, 28V AC
Category
W2.1x9.5d Wedge Base Lamps
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
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

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

OEM
Manufacturer Part Number
657-10PK
Type
Glass Wedge (W2.1x9.5d), (T) Tubular, T3-1/4, 657
Voltage
28V AC
Bulb Shape
T3-1/4
Light Color
White
Trade Number
657

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

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

Product Description

The APPROVED VENDOR Incandescent Bulb is a W2.1x9.5d Wedge Base Lamp with a T3-1/4 tubular shape. It operates at 28V AC and produces white light. The bulb carries Trade Number 657 and Manufacturer Part Number 657-10PK.

Frequently Asked Questions

What is the APPROVED VENDOR 657-10PK incandescent bulb used for?

This T3-1/4 tubular incandescent bulb with a W2.1x9.5d wedge base is used for indicator lighting, panel illumination, and small appliance applications where a compact, reliable 28V AC white light source is required.

What are the specifications of the APPROVED VENDOR 657-10PK bulb?

The bulb is a T3-1/4 tubular shape with a glass wedge W2.1x9.5d base. It operates at 28V AC, produces white light, and carries Trade Number 657. The manufacturer part number is 657-10PK.

Where to buy the APPROVED VENDOR 657-10PK bulb worldwide?

3G Electric supplies the APPROVED VENDOR 657-10PK incandescent bulb worldwide. We handle full logistics, customs clearance, and delivery to your facility, ensuring you receive the correct 28V AC wedge base lamp for your application.

How to install a W2.1x9.5d wedge base bulb like the 657?

To install a W2.1x9.5d wedge base bulb, simply push the glass wedge into the socket until it locks. Ensure power is off and the bulb is rated for your circuit voltage (28V AC for this model). Avoid touching the glass with bare hands to prevent oil contamination.

OEM Products

3G Electric supplies OEM w2.1x9.5d wedge 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

Compatible alternatives & equivalents

Cross-referenced by specification & description
Glass wedge base lamp with W2.1x9.5d base, T3-1/4 tubular shape, operates at 28V AC, produces white light. Trade number 656. Suitable for indicator lighting, panel illumination, and small appliance applications
Glass wedge base lamp with W2.1x9.5d base, T3-1/4 tubular shape, operates at 28V AC, produces white light. Trade number 656. Suitable for indicator lighting, panel illumination, and small appliance applications
APPROVED VENDOR Incandescent Bulb: Incandescent, Glass Wedge (W2.1x9.5d), (T) Tubular, T3-1/4, 655 (MPN 655-10PK)
APPROVED VENDOR Incandescent Bulb: Incandescent, Glass Wedge (W2.1x9.5d), (T) Tubular, T3-1/4, 655 (MPN 655-10PK)
T3-1/4 tubular incandescent lamp with W2.1x9.5d wedge base. Rated for 14V AC, produces white light. Trade number 158. Suitable for indicator lighting, panel illumination, and small appliance applications requiring a compact low-voltage light source
T3-1/4 tubular incandescent lamp with W2.1x9.5d wedge base. Rated for 14V AC, produces white light. Trade number 158. Suitable for indicator lighting, panel illumination, and small appliance applications requiring a compact low-voltage light source
T1-3/4 tubular incandescent lamp with a W2.1x4.9d wedge base. Rated for 28V AC, producing white light. Used for indicator lighting, panel illumination, and small appliance applications
T1-3/4 tubular incandescent lamp with a W2.1x4.9d wedge base. Rated for 28V AC, producing white light. Used for indicator lighting, panel illumination, and small appliance applications
T3-1/4 tubular incandescent lamp with a W2.1x9.5d glass wedge base. Operates at 13V AC and produces white light. Suitable for indicator lighting, panel illumination, and low-voltage signaling in control panels and equipment
T3-1/4 tubular incandescent lamp with a W2.1x9.5d glass wedge base. Operates at 13V AC and produces white light. Suitable for indicator lighting, panel illumination, and low-voltage signaling in control panels and equipment
T3-1/4 tubular incandescent lamp with a W2.1x9.5d glass wedge base. Rated for 28V AC operation and produces white light. Commonly used in indicator panels, control cabinets, and industrial instrumentation
T3-1/4 tubular incandescent lamp with a W2.1x9.5d glass wedge base. Rated for 28V AC operation and produces white light. Commonly used in indicator panels, control cabinets, and industrial instrumentation