The Citel DS74US-230Y/G is a high-performance Type 1 surge protection device (SPD) designed for 400/230 VAC 3-phase 4-wire + ground (Wye) systems. It’s ideal for industrial and commercial electrical panels requiring robust protection against lightning and switching surges.

 Electrical Characteristics

• Voltage Rating: 400/230 VAC (3-phase Wye)
• Max Continuous Operating Voltage (MCOV):
  • L-L: 640 V
  • L-N: 320 V
  • N-G: 255 V
• Surge Current Rating (Imax): 75 kA per module (8/20)
• Nominal Discharge Current (In): 20–30 kA (15 impulses, 8/20)
• Voltage Protection Rating (VPR):
  • L-L: 1800 V
  • L-N: 1000 V
  • L-G: 1200 V
  • N-G: 1200 V
• Short-Circuit Current Rating (SCCR): 200 kA