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Product Specifications:
| Item | Hid Bulb |
| Ansi Code | S51 |
| Bulb Base Type | Mogul Screw (E39) |
| Bulb Beam Angle | 360° |
| Bulb Designation | C400S51/ALTO NC HPS |
| Bulb Dia. | 2 1/4" |
| Bulb Finish | Clear |
| Bulb Housing | Glass |
| Bulb Minimum Starting Temperature | -40°F |
| Bulb Operating Position | Universal Burning |
| Bulb Operating Temp. Range | -40°F to +250°F |
| Bulb Shape | ED18 |
| Bulb Type | Standard |
| Color Rendering Index | 21 |
| Color Temp. | 2100 K |
| Current | 4.6A |
| Dimmable | No |
| Environmental Usage | Indoor/Outdoor |
| For Enclosed Fixtures | Yes |
| Indoor/outdoor | Yes |
| Light Appearance | Warm White 3000 K And Under |
| Light Color | White |
| Light Distribution | Omnidirectional |
| Light Output | 50000 lm |
| Lighting Technology | High Pressure Sodium |
| Lumens | 50000 lm |
| Manufacturers Warranty Length | 4 yrs. |
| Overall Bulb Base Type | Mogul |
| Overall Bulb Shape | ED |
| Overall Length | 9 3/4" |
| Rated Life | 30000 hrs. |
| Shape | ED18 |
| Shatter-resistant | No |
| Trade Number | C400S51/ALTO NC HPS |
| Ul Type | No Ul Type |
| Voltage | 120V |
| Wattage | 400 W |
Shipping Info:
| Ship weight (kg) | 0.18 |
| Ship height (cm) | 2.54 |
| Ship length (cm) | 2.54 |
| Ship width (cm) | 2.54 |
Product Variants
| Product | Model | Lighting Technology | Shape | Bulb Base Type | Color Temp. | Bulb Dia. | For Enclosed Fixtures | Bulb Beam Angle | Light Output | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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C100S54/M | High Pressure Sodium | BD17 | Medium Screw | 2100 K | 2.15" | Yes | 360° | 9200 lm | €38.61 | |
![]() |
C400S51/2 | High Pressure Sodium | ED18 | Mogul Screw (E39) | 2100 K | 2 1/4" | Yes | 360° | 50000 lm | €62.97 | |
![]() |
C400S51/ALTO | High Pressure Sodium | ED18 | Mogul Screw (E39) | 2100 K | 2 1/4" | Yes | 360° | 50000 lm | €39.37 | |
![]() |
C150S55/ALTO | High Pressure Sodium | ED23-1/2 | Mogul Screw (E39) | 2100 K | 2.938" | Yes | 360° | 16000 lm | €34.36 | |
![]() |
C1000S52/ALTO | High Pressure Sodium | ED25 | Mogul Screw (E39) | 2100 K | 3 1/8" | Yes | 360° | 135000 lm | €122.47 | |
![]() |
MS400/HOR/ED28/PS | Metal Halide | ED28 | Mogul Screw (E39) | 4000 K | 3 1/2" | Yes | 360° | 40000 lm | €116.16 | |
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CDM-MR16/20W/830/25D ELITE | Metal Halide | MR16 | 2-Pin (GX10) | 3000 K And Under | 2" | No | 25° | 1000 lm | €112.24 |
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Contact us
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We're available Monday through Friday, from 07:30 until 17:00.
PHILIPS C400S51/ALTO NC HPS High Pressure Sodium HID Bulb, Universal Burning18, Mogul Screw, 400W HPS, 400W
€48.31 /unit







