Cut Sheet

Switch Start Metal Halide
Protected
Switch Start MH Protected 1000W/640 EX39 BT56 CL
An efficient, protected "O" rated lighting solution that is suitable for
open-rated fixtures. Ideal for both indoor and outdoor applications.
Product data
• General Characteristics
Base Exclusionary Mogul Screw
[Exclusionary Mogul Screw]
Base Information Nic/Brass [Nickel/Brass Base]
Bulb BT56
Bulb Material Hard Glass
Bulb Finish Clear
Operating Position Base Up +/-15D [Hanging +/-15D or
Base Up (BU)]
Main Application General Lighting
RatedAvgLife(See
Family Notes)
12000 hr
Energy Saving Not Applicable
• Light Technical Characteristics
Color Code 640 [CCT of 4000K]
Color Rendering
Index
65 Ra8
Color Designation Cool White
Color Temperature 3900 K
Color Temperature
technical
3700 K
Chromaticity Coor-
dinate X
400 -
Chromaticity Coor-
dinate Y
395 -
Initial Lumens 110000 Lm
Luminous Efficacy
Lamp
110 Lm/W
Design Mean Lumens 77000 Lm
• Electrical Characteristics
Watts 1000 W
Lamp Voltage 263 V
Lamp Current 4.1 A
Ignition Time 120 (max) s
Re-ignition Time
[min]
20 (max) min
• Environmental Characteristics
Mercury (Hg)
Content
149.1 (nom), 150.1 (max) mg
Picogram per Lumen
Hour
161.4 p/LuHr
• UV-related Characteristics
PET (NIOSH) 30.5 h.klx
Damage Factor D/fc 0.599 -
• Luminaire Design Requirements
Cap-Base Tempera-
ture
210 (max) C
Bulb Temperature 430 (max) C
• Product Dimensions
Light Center Length
L
9.5 in
Max Overall Length
(MOL) - C
15.375 (max) in
Diameter D 7 in
• Product Data
Product number 281188
Full product name Switch Start MH Protected
1000W/640 EX39 BT56 CL
Short product name Switch St MH Prot 1000W/640 EX39
BT56 CL