ZB 5,08,LGS:U-N - Phoenix Contact
Zack marker strip - ZB 5,08,LGS:U-N - 0809845; Zack marker strip, Strip, white, labeled, printed horizontally: U, V, W, N, GND, U, V, W, N, GND, mounting type: snap into tall marker groove, for terminal block width: 5.08 mm, lettering field size: 10.5 x 5.15 mm