Philips Lighting 414011 EL/mdTQS 23W T2

Yes, the 414011 uses an E26 single contact medium screw base, the standard household and commercial socket in North America. It runs on 110-127 V at either 50 or 60 Hz, so it drops straight into ordinary line voltage fixtures with no adapter or ballast.

No. The 414011 is not dimmable. On a dimmer it will flicker, buzz, or fail early, and the dimmer itself can be damaged. For dimmed circuits in a lobby or a guest room, spec a lamp rated dimmable instead and leave this one on standard on/off switching.

1600 initial lumens at 2700 K, warm white, with a minimum CRI of 81. That is the warm, yellowish tone people expect from an incandescent, so it will not look blue or clinical next to existing incandescent fixtures. The color code is 827. At 23 W drawing 1600 lm the rated efficacy is 67 lm/W.

Think twice. The 414011 is rated for 5000 switching cycles over a 10,000 hour life. A corridor or stairwell on an occupancy sensor can burn through that cycle count long before the hours run out, which means early failures and repeat ladder trips. It suits fixtures that stay on for stretches, table and floor lamps, sconces, surface mounts. For sensor controlled spaces, pick a lamp built for frequent switching.

Yes, it is a compact fluorescent and contains mercury, nominally 2 mg and no more than 2.5 mg per lamp. That puts spent lamps and any breakage under fluorescent lamp handling and recycling rules rather than ordinary trash, which matters for facilities running a universal waste program. Buildings that want mercury out of the maintenance stream entirely should be moving these sockets to LED.

The T2 twister is the smallest of the spiral CFL tube diameters and Philips built this one specifically to drop into compact fixtures that a fatter T3 or T4 spiral fouls, including small modern sconces and surface mounts. It is a direct screw in replacement for an incandescent in those fixtures with no ballast or wiring change.

Worth flagging for an electrician sizing a branch circuit or a panel. The 414011 draws 360 mA at a power factor of 0.55, so the volt-amp load per lamp is well above the 23 W real power figure. Multiply that across a corridor of fixtures and the VA total, not the watt total, is what the circuit sees.

The lamp consumes 23 kWh per 1000 hours of operation and carries an A energy efficiency label. Across a building with dozens of sockets that is the whole argument for the swap, since the wattage does the work an incandescent needed several times the draw to do. Run at three hours a day, 1000 hours is a bit under a year per lamp.

Instant on, per Philips. That matters in a bathroom, closet, or stairwell where somebody flips the switch and walks, and it is the complaint people carry from older CFLs. Note it is warm white at 2700 K, so the color will read the same as the incandescent beside it.

Philips 414011 is the part number, sold under the designation EL/mdTQS 23W T2. Ordering by 414011 gets you the E26 base, 2700 K warm white, 1600 lumen version, which is what keeps a multi building lamp program consistent when several twister wattages and color temperatures look alike on the shelf.