ZoneMaster Pro 340, Type 2, 277/480-3PH-4WW


  • Enhanced redundancy built-in
  • Thermal and short circuit fusing
  • Surge counter with fault monitor and audible alarm
  • Low let-through performance with high current impulses
  • 200k AIC short circuit rating
  • Replaceable bolt-in modules
  • UL 1449 4th Edition Listed
  • UL Type 2, In = 20kA, 200kA SCCR
  • Meets UL96A Master Label Requirements
  • 15 year product warranty

ZoneMaster Pro 340, Type 2, surge protection device with maximum surge capability of 340kA. ZM15204 features a working voltage of 277/480V with a three phase 4-wire WYE. The ZoneMaster Pro surge protection devices feature modular construction with minimal transient impedance, easy to install mountings, large block Metal Oxide Varistor (MOV) protection technology, and status indicators including front panel display, audible and NO/NC remote alarm contacts.

Available Accessories

Disconnect Switch (adds D suffix to the part number)
Flush Mount (adds F suffix to the part number)
Nema 4 Enclosure (adds suffix O to the part number)
Filter (adds X suffix to the part number)

Additional information

Weight 29 lbs
Dimensions 20 × 18 × 14 in