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The LEGRAND R603-PLAV is a 600-watt power supply designed for use with radio frequency interference (RFI)-filtered, 3-wire dimmer systems. It delivers stable, conditioned power to compatible dimming loads while suppressing electrical noise that can interfere with sensitive controls and audio-visual equipment. Licensed electricians install this unit as part of a compliant low-voltage or line-voltage dimming circuit. At 0.35 pounds, it is a compact component suited for retrofit and new-construction panel or junction-box installations where clean power delivery and load compatibility are required.
This power supply is used in residential and light commercial dimming applications where RFI suppression is a specified requirement. The 3-wire configuration supports proper grounding, which is standard practice under NEC guidelines for dimmer circuit installations. It is a direct fit for systems that call out the R603-PLAV by part number, including dimmer panel builds and retrofit dimming upgrades in finished spaces where conducted interference must be controlled.
Designed as an OEM-style replacement power supply for LEGRAND dimmer systems specifying the R603-PLAV part number. Verify load wattage and wiring configuration against the existing system before installation.
Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize the circuit at the breaker panel and verify voltage absence with a meter before handling any wiring. Do not exceed the 600-watt rated load capacity of the unit. Ensure the ground conductor is properly terminated to maintain RFI filter performance and circuit safety.
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