Sylvania 64527 MS400/C/PS-BU-ONLY

Sylvania 64527 MS400/C/PS/BU-ONLY – 400W | ANSI M155/S | E39 Base

Quick Specs

• Brand: Sylvania
• Series: Metalarc Pulse-Start
• Sylvania Order Code: 64527
• Manufacturer Ordering Abbreviation: MS400/C/PS/BU-ONLY
• UPC: 046135645273
• Lamp Type: Pulse-Start Metal Halide (PSMH) — Metalarc
• Wattage: 400W
• Lamp Finish: Coated
• Bulb Shape: BT37
• Base Type: E39 Mogul Screw
• ANSI Ballast Code: M155/S
• Operating Position: Base-up only, within 15° of vertical
• Average Rated Life: 20,000 hours Rated 20,000 hours on a standard 10-hr/start duty cycle; extends to 30,000 hours on a 120-hr/start duty cycle (mean-lumen point measured at 12,000 hours under that cycle).
• Initial Lumens: 42,000
• Mean Lumens: 29,000
• CRI: 70
• Color Temperature: 3600K
• Efficacy: 105 LPW
• MOL (Max Overall Length): 11.5"
• LCL (Light Center Length): 7.0"
• Bulb Diameter: 4.63"
• Mercury Content: Contains mercury — dispose per local, state, or federal regulations.

Product Overview

The Sylvania 64527 MS400/C/PS/BU-ONLY is a 400W Pulse-Start Metal Halide (PSMH) Metalarc lamp for commercial and industrial HID lighting in high-bay, outdoor, and area lighting applications. Pulse-start technology combines proven metal halide arc-tube design with ignitor technology for faster warm-up, high lumen maintenance, and reduced color shift over life compared to standard probe-start metal halide lamps. The manufacturer catalog lists two ANSI codes for this lamp: M155/S (current) and M135/S (original/legacy code) — both refer to the same lamp/ballast combination.

Operating position: Base-up only, within 15° of vertical.

Fixture requirement: S-type: may be used in an open luminaire only within 15° of vertical and away from people or combustible material; otherwise must be used in a suitably enclosed luminaire.

Requires a pulse-start compatible HID ballast matched to ANSI M155/S and a pulse-rated mogul HID socket. Mercury content — dispose per local, state, or federal regulations.

Applications

• Commercial and industrial HID lighting – High-bay, outdoor, and area lighting for warehouses, manufacturing facilities, and similar fixture applications.
• Retrofit and maintenance replacement – Verify ANSI code, wattage, bulb shape, and operating position before ordering. Pulse-start lamps require a pulse-start ballast — not interchangeable with probe-start ballasts.

Safety and Installation

• Compatible pulse-start HID ballast required. Do not use on a probe-start ballast.
• Fixture requirement: S-type: may be used in an open luminaire only within 15° of vertical and away from people or combustible material; otherwise must be used in a suitably enclosed luminaire.
• Allow warm-up time: Several minutes are needed to reach full light output.
• Hot restrike: Allow the lamp to cool before restarting after a power interruption.
• UV radiation: This lamp can cause serious skin burn and eye inflammation from short-wave ultraviolet radiation if the outer envelope is broken or punctured. Use only in fixtures with adequate shielding.
• Mercury disposal: Contains mercury — dispose per local, state, or federal lamp recycling regulations.

Ordering Information

• Brand: Sylvania
• Series: Metalarc Pulse-Start
• Sylvania Order Code: 64527
• ANSI Code: M155/S
• UPC: 046135645273
• Wattage: 400W
• Base: E39 Mogul Screw
• Case quantities and bulk pricing: Contact ADL Supply for volume orders.

Compliance

• Contains mercury — dispose per local, state, or federal lamp recycling regulations.
• Conforms to 21 CFR 1040.30 (U.S.A.) and SOR/80-381 (Canada).
• Verify RoHS and Prop 65 compliance with the Sylvania/LEDVANCE product data sheet.

ADL Supply recommends confirming all specifications with the Sylvania/LEDVANCE product data sheet prior to installation. Questions? Call ADL Supply at 1-800-235-3489.