We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Rectangular lamp holder with SFc10-4 socket, silver metal finish, 5.31 inches long

OSRAM SYLVANIA

OSRAM SYLVANIA SFC10-4 lamp holder for SharkXS lamps

SKU CH-D28Z-3MQZK

Lamp holder for SharkXS SFC10-4 bases with 5.31 in length, 25 kV pulse rating and UL recognised dielectric strength

  • Designed for SharXS family lamps with SFC10-4 base
  • Key-lock socket accepts only correctly keyed bulbs
  • UL Recognised and CSA certified for safety compliance
  • 15 kV dielectric breakdown rating meets UL standard
  • 25 kV pulse rating suits high-voltage ignition systems

OSRAM SFC10-4 Lamp Holder for SharkXS Lamps

This OSRAM Sylvania lamp holder accepts SharkXS lamps with an SFC10-4 base and an overall length of 5.31 inches. It features a key-lock design that engages only with pre-focus notched bulbs. The socket carries UL Recognized and CSA Certified ratings with a dielectric breakdown of 15kV. A pulse rating of 25kV supports reliable ignition for compatible discharge lamps.

Suited for fixtures using SharXS HTI.

Installers working with SharXS family lamps from 400W to 1500W will find the correct base spacing of 4.52 and the required pre-focus notch. Buyers needing a holder for Baby SharXS bulbs must look elsewhere; although those lamps share the SFC10-4 base diameter, their shorter length prevents proper seating. The key-lock feature also excludes any non-keyed bulb types.

Ceramic body sustains repeated high-voltage starts

The holder maintains its dielectric strength through repeated 25kV ignition pulses without tracking or carbon paths. UL certification at 15kV breakdown confirms the insulation margin for continuous operation. The fixed 4.52 base spacing keeps lamp alignment stable during thermal cycling. No moving contacts or springs are present to fatigue under sustained load.

Highlights

  • Designed for SharXS family lamps with SFC10-4 base
  • Key-lock socket accepts only correctly keyed bulbs
  • UL Recognised and CSA certified for safety compliance
  • 15 kV dielectric breakdown rating meets UL standard
  • 25 kV pulse rating suits high-voltage ignition systems

Specifications

BrandOsram Sylvania

Questions about this item

Which lamps with an SFC10-4 base will fit this 5.31 in holder?

All SharXS HTI lamps of 5.31 in overall length fit, including the 400 W, 575 W, 700 W, 1200 W and 1500 W models listed, plus the HMI 575 W/GS and MSR Gold SA/DE series. Baby SharXS bulbs are shorter and will not fit.

Will the 25 kV pulse rating handle older HMI 575 W/GS fixtures?

Yes. The holder is rated for 25 kV pulse and 15 kV dielectric breakdown, matching the requirements of the HMI 575 W/GS and the listed SharXS and MSR Gold lamps.

How can I confirm the key-lock socket has engaged correctly after installation?

Insert the keyed lamp until the pre-focus notch seats firmly; the key-lock feature prevents rotation when the lamp is fully seated, confirming proper electrical contact.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.