4pole ac spd

The 4-Pole AC SPD provides surge protection across all three phases and neutral in a three-phase electrical installation. Lightning strikes, switching transients, and grid disturbances can send destructive voltage spikes through the mains supply, damaging expensive equipment like motors, PLCs, computer networks, and medical devices. This SPD diverts those surges safely to earth, keeping downstream equipment safe. Each pole module features a visual status indicator so you can confirm protection is active at a glance. DIN-rail mountable for clean installation in three-phase distribution boards alongside your MCBs and RCDs.

Specifications​​

specifications for a common Type 2 4P AC SPD,.

Parameter

Typical Value

Description

Poles - 4P

Protects L1, L2, L3, and Neutral (N).

Operating Voltage (U_n)

230/275VAC

Standard three-phase system voltage.

Max Continuous Voltage (U_c)

385V / 420V AC

The highest voltage it can handle constantly.

Nominal Discharge (I_n)

20kA – 40kA

Rated current it can handle repeatedly (8/20μs).

Max Discharge Current (I_{max})

40kA – 65kA

The one-time maximum surge peak it can divert.

Protection Level (U_p)

\leq 1.5kV – 2.0kV

The "let-through" voltage remaining after a surge.

Response Time (t_A)

< 25 ns

How fast the device reacts to a spike.

Standard

IEC 61643-11

International standard for low-voltage SPDs.

Where to find us

https://galacticelectricals.com

Location: nyamakima, duruma road, Nairobi kenya

Similar products: voltage surge arrestor device ac spd 1pnpe 40ka