Sylvania 64789 MP250/PS-BU-ONLY – 250W | CRI 65 | ANSI M153/O, M138/O | Base-Up ±15° Only | EX39 Mogul Screw Base

The Sylvania 64789 MP250/PS-BU-ONLY is a 250W Pulse-Start Metal Halide (PSMH) — Metalarc lamp, CRI 65, ANSI s: M153/O, M138/O, EX39 Mogul Screw Base, 15,000 hours rated life, Base-Up ±15° Only burn position. Rating: Open or Enclosed Fixtures. Requires a compatible HID ballast. Mercury content — dispose per local regulations. UPC: 46135647895. Item: MP250PSBUONLY-64789.

Quick Specs

• Brand: Sylvania
• Series: Metalarc Pulse-Start
• Sylvania Order Code: 64789
• Manufacturer Part Number: MP250PSBUONLY-64789
• UPC: 46135647895
• ANSI Code: M153/O, M138/O
• Lamp Type: Pulse-Start Metal Halide (PSMH) — Metalarc
• Color Temp 4000K Cool White
• Wattage: 250W
• CRI: 65
• Rated Average Life: 15,000 hours
• Base Type: EX39 Extended Mogul Screw (protected shield — rated for open or enclosed fixtures)
• Overall Length / Diameter (MOL): 8.31 in MOL × 3.5 in Diameter
• Burn / Operating Position: Base-Up ±15° Only
• Fixture Compatibility: Rating: Open or Enclosed Fixtures
• Start Type: Pulse-Start — requires pulse-start ballast
• Mercury Content: Contains mercury — dispose per local regulations.

Product Overview

The Sylvania 64789 MP250/PS-BU-ONLY is a 250W Pulse-Start Metal Halide (PSMH) — Metalarc for commercial and industrial HID lighting in high-bay, outdoor, and area lighting applications. Pulse-start technology delivers faster warm-up, improved lumen maintenance, and longer rated life compared to standard probe-start metal halide lamps. Rated life: 15,000 hours. Fixture: Rating: Open or Enclosed Fixtures.

Requires a pulse-start compatible HID ballast and pulse-rated socket. Mercury content — dispose per local regulations.

Applications

• Commercial and industrial HID lighting – Commercial and industrial hid lighting in high-bay, outdoor, and area lighting applications.
• Retrofit and maintenance replacement – Verify ANSI code, wattage, and burn position before ordering. Pulse-start lamps require a pulse-start ballast — not interchangeable with probe-start.

Safety and Installation

• Compatible HID ballast required. Pulse-start ballast required — do not use on probe-start ballast.
• Enclosed fixture required. Use only in enclosed fixtures rated for this lamp.
• Allow warm-up time: 5–10 minutes for full output.
• Hot restrike: Allow 7–12 minutes after switching off before restarting.
• UV radiation: This lamp emits UV radiation. Use only in fixtures with UV-protective shielding.
• Mercury disposal: Contains mercury — dispose per local lamp recycling regulations.

Ordering Information

• Brand: Sylvania
• Series: Metalarc Pulse-Start
• Sylvania Order Code: 64789
• ANSI Code: s: M153/O, M138/O
• UPC: 46135647895
• Wattage: 250W
• Base: EX39 Mogul Screw Base
• Case quantities and bulk pricing: Contact ADL Supply for volume orders.

Compliance

• Contains mercury — dispose per local lamp recycling regulations.
• Verify RoHS and Prop 65 compliance with Sylvania specification sheet.

ADL Supply recommends confirming all specifications with the Sylvania product data sheet prior to installation.