Leviton 42120-DY3 120/240V Panel Protactor, NEMA 3R

by Leviton


The Leviton 42120-DY3 secondary surge arresters are also intended for use as part of a coordinated application strategy. Leviton 42120-DY3 protects sensitive electronic equipment from the stress and degradation inflicted by voltage transients in industrial, commercial and residential locations. Leviton surge protection devices are compliant with UL 1449 Standards. These devices installs very easily and provide protection of up to 50,000 peak Amps of surge current per mode. The Leviton 42120-DY3 is designed for 120/240 volt single-phase ringless or ring-type meters, since it has higher energy capacity than another small MOV configurations.


  • UL 1449 Listed
  • 32000 Series compatible with Decora Home Control equipment
  • Hybrid component suppression design
  • SPD protection on all phases
  • Common mode N-G SPD protection for Wye configured AC systems
  • All "DY3" models may be used on either Delta or Wye systems as sold
  • Audible and visual failure indicators for diagnostic monitoring
  • Provided with Remote Monitoring Dry Contacts
  • 3/4" (1.9 cm) nipple for close proximity wire connections
  • Convenient surface mounting


  • Phase WYE
  • Surge Technology: 40mm MOV Design
  • Frequency: 50/60Hz
  • Recommended Circuit Breaker Rating: 20A, 120/208V
  • EMI/RFI Noise Rejection: (-30 to -40 @ 10K - 10MHz)
  • Enclosure Type: National Eectrical Manufacturers Association 3R Steel Enclosure
  • Flammability: Rated V-2 per UL94
  • Operating temperature: -10C to 60C
  • Storage Temperature Range: -20C to 85C
  • Relative Humidity: 5% to 95% non-condensing
  • Outer Enclosure: Powder Coated Steel
  • Connection Type: Parallel - Hardwired via 12 AWG Wire
  • Diagnostics: Real Time Protection status LEDs & Audible Alarm
  • Remote Monitoring: Dry Contact Leads-N.O./N.C. Form C Rated at 7Amps @ 240VAC or 30 VDC

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