Porcelain lampholders. E-40
- E-40 · Screw connection · 16 A · 250 V~.
- 777B / 777SS · 150 W.
- 777B · 3/8G; 777SS · Check mounting in data sheet.
Solera porcelain E-40 lampholders: references 777B and 777SS
777B and 777SS are porcelain lampholders for E-40 lamps, with screw connections and declared ratings of 16 A and 250 V~. Both data sheets list a maximum power of 150 W. 777B specifies 3/8G fixing and anti-rotation protection; check the mounting of 777SS in its documentation.
Reference comparison
| Reference | Format / mounting | Declared data |
|---|---|---|
| 777B | 3/8G | E-40 · 16 A · 250 V~ · 150 W |
| 777SS | Check mounting in data sheet | E-40 · 16 A · 250 V~ · 150 W |
Selecting the component
16 A is a current rating, not permission to use any lamp wattage. Observe the declared 150 W limit, product marking, temperature conditions and luminaire limits. Replacing an existing lamp with an E-40 LED may require reviewing the control gear; a matching cap does not validate the conversion.
Selection must respect the voltage, current, power and thermal conditions of both the component and the luminaire. Disconnect the supply before installation or replacement and follow the manufacturer’s instructions; a matching lamp cap alone does not validate the complete assembly.
Frequently asked questions
Can one model replace another with the same cap type?
Check fixing, dimensions, connections and electrical and thermal limits. A matching cap does not establish interchangeable mounting.
Does porcelain allow use at any temperature?
No. Permitted temperature must be documented for the component and luminaire; it cannot be inferred from the body material alone.
Can an LED lamp be used?
Only with a matching cap and compatible voltage, supply, dimensions and thermal conditions, within the declared limits.