B22 Bayonet Lamp Socket Adapters & Splitters
B22 Bayonet Lamp Socket Adapters, Extenders and Splitters
This collection is centered on adapters that connect B22 bayonet sockets or lamps with other lighting-base formats. The inspected range includes B22-to-E26/E27 converters, reverse E27-to-B22 adapters, B22 extenders, two-lamp splitters and selected conversions involving E14, E39/E40, BA15D and G9.
These products are primarily socket converters rather than a complete range of standalone B22, B15 or BA15 lamp holders. Select the exact input and output shown for each product or variant.
Formats Found in This Collection
- B22 to E26/E27: standard bayonet input with a medium Edison-screw output
- E27 to B22: medium Edison-screw input with a B22 bayonet output
- B22 to E14: bayonet input for an E14 small Edison-screw lamp
- E14 to B22: E14 screw input for a B22 bayonet lamp
- B22 to E39/E40: bayonet input with a mogul Edison-screw output
- B22 to BA15D: selected adapter for a smaller double-contact bayonet lamp
- B22 to G9: selected adapter for a G9 lamp
- B22 to B22: straight extension between matching bayonet formats
- B22 to two E27 sockets: splitter for two medium Edison-screw lamps
- Mixed listings: some products contain many unrelated adapter variants; choose only the specifically named B22 or BA15D option
Understanding Input and Output Direction
Adapter names should be read from the existing socket toward the lamp. For example, “B22 to E27” normally means the adapter installs in a B22 socket and accepts an E27 lamp. “E27 to B22” is the reverse product. These directions are not interchangeable.
Before ordering, inspect both sides of the adapter image and confirm the selected variant title. Marketplace product titles sometimes mention both directions even when they are separate variants.
B22 and BA15 Are Different Families
B22 is a larger bayonet format commonly used for general lighting. BA15D is a smaller bayonet format with two bottom contacts. Diameter, pin geometry and contact arrangement differ. A B22 product must not be treated as BA15-compatible unless the exact selected adapter explicitly provides that conversion.
The inspected catalog does not support the old claim that this collection provides a complete B22d, B15d, B15s, BA15d and BA15s socket range. BA15 appears only in selected options within mixed converter listings.
How to Select
- Identify the existing socket’s exact base format.
- Identify the lamp’s exact base format.
- Confirm the conversion direction, not just the two base names.
- Check whether the product is a straight adapter, flexible extender, splitter or plug adapter.
- Verify supply voltage, frequency and lamp electrical requirements.
- Confirm the adapter and original fixture ratings for the total connected load.
- Check overall length, lamp clearance, ventilation and mechanical support.
- Review product-specific compliance evidence for the destination market.
Adapters Do Not Convert Voltage
A passive lamp-base adapter normally changes only the mechanical and contact interface. It does not convert 120V to 230V, AC to DC, lamp wattage, dimming method, ballast type or control electronics. The lamp must already be electrically compatible with the supply and fixture.
Splitters and Mogul Adapters
A B22-to-two-E27 splitter allows two lamps to connect to one bayonet socket, but the combined lamp load must remain within the rating of the adapter, original socket, wiring, switch and fixture. A B22-to-E39/E40 adapter does not make a B22 fixture suitable for a heavy or high-power mogul lamp. Check weight, leverage, heat, enclosure clearance and total electrical load.
Materials, Ratings and Certifications
The listings use mixed descriptions such as PBT, plastic, copper contact, “fireproof” and “high temperature.” These statements are product-specific and do not establish one material or thermal rating for the collection. Likewise, 250V/2A, 220V/6A, CE and RoHS wording appears on selected products only and is not a verified collection-wide rating or approval.
Use traceable markings and current documentation for the exact adapter. Do not infer suitability for halogen lamps, high-bay lighting, enclosed fixtures or unattended operation from base type alone.
Typical Uses
Correctly specified adapters can support lamp-base conversion, temporary retrofit evaluation, decorative-lighting changes and replacement where the supply, lamp and fixture remain compatible. They are not voltage converters and do not automatically make a fixture compliant with a different regional electrical system.
Frequently Asked Questions
Is B22 the same as BA15D?
No. They differ in diameter, pin arrangement and contact geometry.
Can I reverse a B22-to-E27 adapter?
No. Use an E27-to-B22 product for the opposite direction.
Will an adapter convert the supply voltage?
No. Passive socket adapters normally do not provide voltage conversion.
Can I fit a high-power E40 lamp into a B22 fixture with an adapter?
Do not assume so. The original fixture may not support the lamp’s load, heat, size or weight.
Does every listing contain a B22 option?
Some are mixed listings. Confirm the selected variant before ordering.
Are all products CE or RoHS certified?
No collection-wide certification was verified. Check documentation for the exact product.
Ordering Checklist
Confirm input base, output base, conversion direction, voltage, lamp requirements, combined load, dimensions, lamp weight, clearance, material, package quantity and product-specific compliance evidence.
