Philips 137521 150W Metal Halide Lamp – M102/E ANSI | 4000K Cool White | 13,500 Lumens | ED17 | E26 Medium Base | Pulse Start | Enclosed Fixture

The Philips 137521 is a 150-watt pulse start metal halide lamp delivering 13,500 initial lumens at 4000K cool white with CRI 65 and a 15,000-hour rated life. M102/E ANSI classification, E26 medium base, and ED17 bulb shape make this a compact, efficient HID lamp for retail, warehouse, parking garage, and commercial outdoor flood lighting applications in enclosed UL-listed fixtures.

Quick Specs

• Brand: Philips
• Model / SKU: 137521
• Lamp Type: Pulse Start Metal Halide
• Wattage: 150W
• ANSI Code: M102/E
• Color Temperature: 4000K (Cool White)
• CRI: 65
• Initial Lumens: 13,500 lm
• Rated Life: 15,000 hours
• Start Method: Pulse Start
• Base Type: E26 Medium Screw Base
• Bulb Shape: ED17
• Overall Length (MOL): 5.39 inches (137mm)
• Diameter: 2.125 inches (54mm)
• Fixture Requirement: Enclosed Fixtures Only — UL-Listed
• Mean Lumens: Verify with manufacturer specification sheet

Product Overview

The Philips 137521 is a 150-watt pulse start metal halide lamp — a compact, efficient HID source producing 13,500 initial lumens from an ED17 bulb on a standard E26 medium screw base. The E26 medium base is the same physical base used by standard household and commercial incandescent lamps, making fixture socket replacement straightforward in commercial retrofit applications.

Pulse start technology — identified by the /E suffix in the M102/E ANSI code — uses a high-voltage ignition pulse rather than a separate starter or switch start mechanism to initiate lamp arc formation. Pulse start metal halide lamps offer faster warm-up to full output, improved lumen maintenance over lamp life, and better color consistency compared to probe start designs on the same ballast platform. The ballast must be a pulse start-rated unit — probe start or switch start ballasts are not compatible with this lamp.

At 15,000 hours rated life and 4000K cool white output with CRI 65, this lamp is appropriate for retail store lighting, warehouse and industrial fixtures, parking structure illumination, and commercial outdoor flood lighting where a compact ED17 HID source is specified in an enclosed fixture housing. The M102/E ANSI code covers the 150W pulse start metal halide family — confirm your ballast carries this exact designation before ordering.

Why Choose This Product

• Pulse start technology — faster ignition and better lumen maintenance: Pulse start metal halide reaches full output faster than probe start designs and maintains higher lumen output over lamp life due to improved electrode and arc tube design.
• 13,500 initial lumens at 150W: High lumen output for the compact ED17 form factor — appropriate for retail display, high-bay industrial, and outdoor flood applications where a medium-base HID source is required.
• E26 medium base — widely compatible: The standard E26 medium screw base is the most common commercial HID socket for compact metal halide applications — simplifies fixture compatibility and reduces lampholder replacement requirements.
• 15,000-hour rated life: Long service life for a compact pulse start metal halide source — reduces replacement frequency and maintenance cost in commercial fixture installations.
• 4000K cool white at CRI 65: Better color rendering than mercury vapor (CRI 50) at similar wattage — appropriate for retail, parking, and commercial applications where color quality improves visibility and product presentation.
• Compact ED17 bulb profile: The ED17 bulb shape is smaller than standard ED28 HID lamps — suited for compact fixture housings, directional flood heads, and retail track and downlight HID applications.

Technical Specifications

Dimensions

Applications

The Philips 137521 150W pulse start metal halide lamp is specified for enclosed commercial and industrial lighting applications where a compact medium-base HID source is required:

• Retail store lighting – Compact ED17 form factor suits retail track fixtures, directional HID downlights, and display flood housings. 4000K cool white and CRI 65 support merchandise visibility without the color distortion of lower-CRI HID sources.
• Warehouse and industrial lighting – 13,500 initial lumens in a compact 150W source suitable for lower-clearance industrial bays and storage areas where the ED17 profile fits tighter fixture housings.
• Parking garage illumination – Enclosed fixture requirement is well-matched to protected parking structure luminaires; 15,000-hour life reduces maintenance frequency in difficult-access fixture positions.
• Outdoor commercial flood lighting – Compact ED17 HID source for enclosed outdoor flood and area fixtures on commercial building perimeters, signage lighting, and site illumination.

Replacing Your Current Metal Halide Lamp?

Confirm the following before ordering to ensure a compatible replacement:

• ANSI code — M102/E: The /E suffix identifies this as a pulse start metal halide lamp. Verify your existing ballast is rated for M102/E pulse start operation. An M102 probe start ballast (without the /E designation) is not compatible with this pulse start lamp — using a probe start ballast with a pulse start lamp will result in failure or damage.
• Start method — pulse start ballast required: This lamp requires a pulse start-capable ballast. Probe start, switch start, and reactor-only ballasts are not compatible. Verify your ballast type before ordering.
• Base type — E26 medium screw: Verify your fixture socket accepts E26 medium base HID lamps. Some fixtures designed for larger HID lamps use E39 mogul sockets — confirm the base type in your fixture before ordering.
• Enclosed fixture requirement: This lamp must be installed in a UL-listed enclosed fixture. Do not use in open fixtures — UV radiation risk if the outer envelope is damaged and the fixture does not provide containment.
• Burn position: Verify acceptable burn positions with the Philips product data sheet — metal halide lamps have specific burn position requirements that affect rated life and safety.
• Wattage: 150W — verify your ballast and fixture are rated for 150W metal halide operation. Do not install in 175W or other wattage metal halide fixtures without confirming ANSI code compatibility.
• Re-ignition: Pulse start metal halide lamps require a cool-down period after hot extinguishing before re-striking. This is normal for the technology — the pulse start system does not eliminate the re-strike delay.

Ordering Information

• Brand: Philips
• Model / SKU: 137521
• Lamp Type: 150W Pulse Start Metal Halide
• ANSI Code: M102/E
• Base: E26 Medium Screw
• Fixture Requirement: Enclosed — UL-Listed
• Case quantities and bulk pricing: Contact ADL Supply for volume orders.

Compliance and Safety

• ANSI M102/E Compliant: Yes
• UL 1598 Certified: Yes
• RoHS Compliant: Yes
• FDA 21 CFR 1040.30 Compliant: Yes — UV radiation performance standards for ultraviolet radiation-emitting products.
• Canada SOR/DORS/80-381 Compliant: Yes — Canadian Radiation Emitting Devices Regulations.
• UV Radiation Warning: A damaged outer envelope significantly increases UV exposure risk. Use only in enclosed UL-listed fixtures. Replace damaged lamps immediately and do not operate with a cracked or broken outer bulb.
• Mercury disposal: This lamp contains mercury. Dispose of in accordance with local and state lamp recycling regulations. Do not dispose of in general waste. For lamp recycling information, visit lamprecycle.org.
• Verify California Title 20 / T24 compliance with manufacturer specification sheet.
• Verify Prop 65 warning requirements with manufacturer specification sheet.

ADL Supply recommends confirming all applicable compliance data with the Philips official product data sheet prior to specification or installation.