Description
Commercial High-Output HID Lamp | Cool White 4000K For High-Bays, Parking, And Floodlighting Applications
Designed as a dependable replacement for legacy probe-start fixtures, the Topaz MH400/U-37 delivers high lumen output and consistent cool white illumination to minimize maintenance intervals in large commercial and industrial spaces. Its universal burning position and robust ED37 construction make it a trusted choice for high-bays, parking, and exterior floodlighting where reliable HID performance is required.
KEY FEATURES:
- High Output: Produces 38,000 lumens for bright, wide-area illumination.
- Ballast Requirement: Requires a matching ANSI M59 magnetic ballast circuit and compatible capacitor for proper operation.
- Start & Restart Notes: Probe-start design needs a 3-5 minute warm-up and a 10-15 minute cool-down window before safe restrike after power interruptions.
- Universal Position: Operates in a universal burning position for flexible installation.
- Enclosed Fixture Rated: Rated for enclosed fixtures when specified as Open-Closed Rated.
APPLICATIONS:
- Ideal for warehouse high-bays and manufacturing facilities requiring high-output HID lighting.
- Well-suited for parking lot and exterior floodlighting where long-range illumination is needed.
- Common choice for commercial arenas and large retail exteriors seeking robust, proven HID performance.
- Tip: Pair with a properly sized ANSI M59 magnetic ballast and allow recommended warm-up/cool-down intervals to maximize lamp life.
SPECIFICATIONS:
- Product Code: MH400/U-37
- Topaz by Halco SKU: T74687-37
- Manufacturer: Topaz
- Wattage: 400W
- Lumens: 38,000 lm
- Color Temperature: 4000K
- Technology: HID (Metal Halide)
- Bulb Type: ED37
- Base Type: Mogul (E39)
- Voltage: 120V
- Average Life: 20,000 hrs
- Warranty: 2 years
- Operating Position: Universal
- Open - Closed Rated: Enclosed Fixtures Only
- Sold In Multiples Of: 1
- Master Carton Size: 12
- Weight Per Item: 0.875 (lb)
- Dimensions (L×W×H): 4.3 × 5.1 × 11.2 (in)
CERTIFICATIONS & ADDITIONAL NOTES:
- RoHS: Yes
- Application Notes: Requires compatible ANSI M59 magnetic ballast and capacitor; allow warm-up and cool-down intervals to ensure safe restrike and full brightness.
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Disclaimers
*This product typically ships in 2 to 3 business days. Larger quantities may take longer than the stated lead-time. All lead-times are estimates, and you will be notified by email if it will take longer than 5 business days to ship. Halco products ship directly from the manufacturer and require a combined minimum purchase of $150 in Halco merchandise. Multiple Halco items may be combined to meet the minimum.

