Description
480Vac Input
Step-Down Auto-Transformer
50/60 Hz
Power Up Your 277V Lighting:Effortless Upgrade with Keystone 375VA Transformer (480V to 277V)
Unleash the potential of your 480V system by effortlessly converting it to 277V with the Keystone KTAT-375-480-277. This versatile 375VA transformer empowers you to utilize energy-efficient 277V lighting, unlocking wider fixture options and significant cost savings. Enjoy a simple installation, quiet operation, and peace of mind with a 5-year warranty.
Key Features:
- Boost Efficiency:Switch to 277V LED lighting and cut energy consumption.
- Unlock Modern Lighting:Power a wider range of 277V fixtures for design flexibility and enhanced aesthetics.
- Effortless Installation:Single unit design and flex conduit wiring simplify setup.
- Quiet Operation:Sound Rated A for minimal noise disruption.
- Safety First:UL/cUL listed and thermally protected for peace of mind.
- Durable Performance:Built with quality materials for lasting reliability,backed by a 5-year warranty.
- Universal Compatibility:Works with T5,T8,CFL,and Electronic HID ballasts.
- High-Temperature Resistance:Class A insulation handles demanding environments.
Benefits:
- Reduce energy consumption and operational costs.
- Enjoy brighter, more modern lighting with advanced LED technology.
- Simplify installation with the user-friendly design.
- Operate with confidence thanks to safety certifications and thermal protection.
- Experience long-lasting performance and peace of mind.
Additional Information:
- Input Voltage:480VAC ±10%,347VAC ±10% (50/60 Hz)
- Output Voltage:277VAC ±5%,200VAC ±5% (347V input)
- Dimensions:(consult manufacturer’s datasheet)
- Weight:(consult manufacturer’s datasheet)
- Warranty:5 years
Keystone KTAT-375-480-277 /A Step Down Transformer Specifications:
General:
- Type:Non-isolated autotransformer
- Function:Step-down voltage from 480V or 347V to 277V (or 200V at 347V input)
- Power Rating:375VA at 480V,270VA at 347V
- Input Voltage:480VAC ±10%,347VAC ±10% (50/60 Hz)
- Output Voltage:277VAC ±5%,200VAC ±5% (347V input)
- Efficiency:93% typical
- Regulation:±3% at full load
- Enclosure:Single-piece enclosed design with flex conduit
- Location Rating:IP20 (dry and damp locations)
- Sound Rating:A
- Thermal Protection:Yes
- Safety Certifications:UL/cUL Listed (consult manufacturer for specific certifications)
- Maximum Case Temperature:105°C / 221°F
- Warranty:5 years
Dimensions:
- Length:5.7 inches (14.5 cm)
- Width:5.0 inches (12.7 cm)
- Height:3.7 inches (9.4 cm)
Weight:
- 6.6 lbs (3.0 kg)
Additional Features:
- Universal compatibility with T5,T8,CFL,and Electronic HID ballasts operating at 277V input voltage.
- Class A insulation for high-temperature resistance.
- Easy installation with single unit design and flex conduit wiring.
- Quiet operation with Sound Rating A.
- Thermally protected for safe operation.
- Backed by a 5-year manufacturer’s warranty.





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