Product Overview

Philips 377242 MHC150/U/MP/4K/ALTO – 150W | 4000K Cool White | CRI 92 | ANSI M102/O or M142/O | Universal | E26 Medium Screw

The Philips 377242 MHC150/U/MP/4K/ALTO is a 150W 4000K Cool White MasterColor Protected Ceramic Metal Halide (CMH) lamp, CRI 92, ANSI M102/O or M142/O, E26 Medium Screw, 12,000 initial lumens, 20,000 hours rated life, Universal burn position. Enclosed Fixtures Only. The protected arc (MP/ED17P) design qualifies as O-type — suitable for open or enclosed fixtures. UPC: 46677377243. MPN: MHC150UMP4K-ED17P.

Wattage

150W

CMH/MH

Color Temp

4000K

CRI 92

ANSI Code

M102/O or M1

Ballast Code

Rated Life

20,000

Hours

Base

E26

Medium

Quick Specs

Brand: Philips
Series: Philips MasterColor Protected
Philips Order Code: 377242
Manufacturer Part Number: MHC150UMP4K-ED17P
UPC: 46677377243
ANSI Code: M102/O or M142/O
Lamp Type: MasterColor Protected Ceramic Metal Halide (CMH)
Wattage: 150W
Color Temperature: 4000K Cool White
CRI: 92
Initial Lumens: 12,000 lm
Rated Average Life: 20,000 hours
Base Type: E26 Medium Screw
Burn / Operating Position: Universal
Fixture Compatibility: Enclosed Fixtures Only
Start Type: Pulse-Start — requires pulse-start ballast and 4kV socket
Mercury Content: Contains mercury — dispose per local regulations.

Product Overview

The Philips 377242 MHC150/U/MP/4K/ALTO is a 150W 4000K Cool White Philips MasterColor ceramic metal halide lamp. CMH ceramic arc tube technology delivers CRI 92 color rendering with superior color stability over lamp life for retail display, commercial, and architectural lighting requiring open or enclosed fixture compatibility. The protected arc (MP/ED17P) design qualifies as O-type — suitable for open or enclosed fixtures. Rated life: 20,000 hours.

Requires a compatible CMH ballast with thermal protection. Contains mercury — dispose per local regulations.

Applications

Commercial and high-CRI lighting – Retail display, commercial, and architectural lighting requiring open or enclosed fixture compatibility.
Retrofit and maintenance replacement – Verify ANSI code, wattage, and base type before ordering. Requires thermally protected CDM control gear.

Safety and Installation

Thermally protected ballast required. The protected arc (MP/ED17P) design qualifies as O-type — suitable for open or enclosed fixtures.
Fixture: Enclosed Fixtures Only.
Burn position: Universal.
Allow warm-up time: 2–5 minutes for full output.
Hot restrike: Allow 5–12 minutes after switching off before restarting.
UV radiation: Use only in fixtures with UV-protective shielding.
Mercury disposal: Contains mercury — dispose per local lamp recycling regulations.