Specification
DG TT 20 340 (900 456)
SPD according to EN 61643-11 type 2
SPD according to IEC 61643-11 class II
Power supply system three-phase TT / TN system
Nominal a.c. voltage (UN) 230 / 400 V (50 / 60 Hz)
Max. continuous operating a.c. voltage [L-N] (UC) 340 V (50 / 60 Hz)
Max. continuous operating a.c. voltage [N-PE] (UC) 255 V (50 / 60 Hz)
Follow current extinguishing capability [N-PE] (Ifi) 100 A
Nominal discharge current (8/20 µs) [L-N] (In) 20 kA
Nominal discharge current (8/20 µs) [N-PE] (In) 20 kA
Max. discharge current (8/20 µs) [L-N] (Imax) 40 kA
Max. discharge current (8/20 µs) [N-PE] (Imax) 40 kA
Voltage protection level (UP) ≤ 1.5 kV
Protective conductor current (IPE) ≤ 5 µA
Response time [L-N] (tA) ≤ 25 ns
Response time [N-PE] (tA) ≤ 100 ns
Max. mains-side overcurrent protection 125 A gG
Short-circuit withstand capability (ISCCR) 25 kArms
Temporary overvoltage (TOV) [L-N] (UT) – Characteristic (UT) 335 V / 5 sec. - withstand
Temporary overvoltage (TOV) [L-N] (UT) – Characteristic (UT) 440 V / 120 min. – safe failure
Temporary overvoltage (TOV) [N-PE] (UT) – Characteristic (UT) 1200 V / 200 ms. – withstand
Operating temperature range -40 °C ... +80 °C
Operating state / fault indication green / red
Number of ports 1
Cross-sectional area, solid / flexible (min.) 2.5 mm
2
Cross-sectional area, solid / flexible (max.) 25 mm
2 / 16 mm2
For mounting on 35 mm DIN rails acc. to EN 60715
Enclosure material thermoplastic, red, UL 94 V-0
Place of installation indoor installation
Degree of protection IP 20
Capacity 4 module(s), DIN 43880
