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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.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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