Phoenix Contact: Surge protection with 4+0 circuit
The world’s narrowest type 2 surge protective device, VALVETRAB SEC, is now also available with a 4+0 circuit. You can use this version in TN-S and IT power supply systems. Delivering a high continuous voltage of 440 V AC, the powerful surge protective device protects your systems in the 400/690 V AC voltage level. The new type 2 protective device extends the existing SEC product range.

