Keystone 45W Power Select LED Driver – 700-850mA 0-10V Dim-to-Off – KTLD-45-UV-PS850-54-VDIM-LS4
This 45W LED driver is the Keystone Technologies KTLD-45-UV-PS850-54-VDIM-LS4, a constant-current Power Select driver with field-selectable 700/750/800/850mA output, 30-54Vdc, and 0-10V dim-to-off dimming on universal 120-277 VAC input. Its compact Class 2 LS4 case is rated for dry and damp locations.
Replaces / supersedes the KTLD-45-UV-PS850-54-VDIM-LM1. The LS4 case footprint differs, so it may not fit the old mounting holes.
Key Features
- 45W max constant-current LED driver
- Field-selectable output: 700mA, 750mA, 800mA, or 850mA
- 30-54Vdc output voltage range
- Universal 120-277 VAC input
- 0-10V dimming with dim-to-off
- Class 2 output, UL 8750 Class P
- Over voltage, over current, and short circuit protection (hiccup, auto-recover)
- Power factor >0.9; THD <20% at 80-100% load
- Up to 90% typical efficiency at 277V
- Compact LS4 case: 5.95" L × 1.30" W × 1.09" H
- Dry and damp locations
- 5-year limited manufacturer warranty
Specifications
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Model: KTLD-45-UV-PS850-54-VDIM-LS4
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Brand: Keystone Technologies
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Driver Type: Constant current, Power Select
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Max Output Power: 45W
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Output Current / Power: 700mA (37.8W) / 750mA (40.5W) / 800mA (43.2W) / 850mA (45.9W)
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Output Voltage: 30-54Vdc
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Input Voltage: 120-277 VAC ±10%
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Frequency: 50/60 Hz
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Max Input Current: 0.51A @120V
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Inrush Current: <20A @120V
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Power Factor: >0.9 (80-100% load)
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THD: <20% (80-100% load)
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Typical Efficiency: 89% @120V / 90% @277V
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No-Load Power: <1W
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Ripple & Noise: <10% (pk-pk)
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Surge Rating: 2.5kV (ANSI/IEEE C62.41)
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Dimming: 0-10V with dim-to-off (purple + / pink −)
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Protection: Over voltage, over current, short circuit (hiccup, auto-recover)
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Class 2: Yes (US & Canada)
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Location Rating: Dry / damp
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Case Style: LS4
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Dimensions: 5.95" L × 1.30" W × 1.09" H
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Body Length: 5.16"
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Mounting Hole Centers: 5.56"
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Lead Length: 12" input (#18 AWG black/white), 12" output (#18 AWG red/blue), 12" dimming (#22 AWG purple/pink)
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Operating Temperature: -40°F to 122°F (-40°C to 50°C)
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Storage Temperature: -40°F to 176°F (-40°C to 80°C)
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Max Case Temperature: 194°F (90°C); 167°F (75°C) for 5-year warranty
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Life Rating: >50,000 hours at 75°C case
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MTBF: >200,000 hours at 25°C ambient
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Certifications: UL/cUL 8750 Class P, CAN/CSA-C22.2 No. 250.13, FCC Part 15 Class B, EN61000-3-2 Class C
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Warranty: 5-Year Limited
KTLD-45-UV-PS850-54-VDIM-LS4 spec sheet
Compatible Loads
- Constant-current LED modules sized for 700-850mA and 30-54Vdc
- 0-10V dimmers and controls wired to the purple (+) / pink (−) leads
- Dry and damp indoor fixtures (not a wet-location sealed driver)
- Confirm LED Vf and current before selecting the Power Select switch position
Compatible With / Replaces
- Direct electrical replacement for the previous edition (check mounting: LS4 case is shorter)
- Other Keystone KTLD-45 Power Select drivers in this current/voltage class
- 45W Class 2 constant-current drivers with 0-10V dimming and 120-277V input
Common Applications
- Linear LED modules and architectural fixtures
- Retrofit LED boards needing selectable drive current
- Commercial and industrial 120-277V LED projects
- 0-10V dimming zones with dim-to-off
Why Buy from Keystone Technologies?
- Power Select slide sets 700/750/800/850mA in the field
- Class 2 output with OVP/OCP/SCP protection
- 0-10V dim-to-off on universal voltage
- 5-year limited manufacturer warranty
Why Buy from LeanLight?
- Fast & free shipping on every order (ships from Georgia)
- Volume and project discounts available
- 30-day satisfaction guarantee with easy returns
- Georgia-based lighting specialists since 2008
