Hard-wired AC surge protector 3-phase+N
Part Number: 750101
  • Hard-wired AC surge protector
  • For 120V network up to 3-phase+N
  • In : 20 kA
  • Imax : 50 kA
  • No leakAge current
  • LED visual indicator + audible alarm
  • UL1449 ed.4 compliant

CITEL M50’s compact, low profi le surge protectors are designed to protect local distribution panels, OEM control panels, PLC’s, and SCADA systems against transient surge events. These devices are installed parallel to the AC network and provide robust surge handling capability. The M50 is available up to three phase applications and is rated at 50kA (8/20μs) transient amps per phase.

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SPD type 2
Network 120/208 V 3-phase
Nominal line voltage Un 120 Vac
Max. AC operating voltage L-N Uc 150 Vac
Max. AC operating voltage Mcov 150 Vac
Temporary Over Voltage (TOV) Charasteristics - 5 sec. UT 180 Vac withstand
Temporary Over Voltage (TOV) Charasteristics - 120 mn UT 230 Vac disconnection
Operating current Ic None
Follow current If None
Nominal discharge current In 20 kA
Max. discharge current Imax 50 kA
Total Maximal discharge current Imax Total 50 kA
Protection level Up 1200 V
Protection level L/N Up L/N 1200 V
Protection level L/PE Up L/PE 1200 V
Residual Voltage at 3 kA Up-3kA 700 Vac
Admissible short-circuit current Isccr 100 kA
SPD configuration 3-phase
Connection to Network wire 15 AWG (1.5 mm²). long. 600 mm
Mounting Bulkhead (3/4')
Housing material Stainless steel
Operating temperature -40/+85°C
Protection rating IP66
Disconnection indicator Led OFF + audible alarm
Dimensions See diagram
Standards compliance IEC 61643-11 / EN 61643-11 / UL1449 4ed.