Surge protection plug - PT 3-HF-12DC-ST - 2858043Surge protection plug for the base element, normal mode voltage coarse and fine protection for two floating signal wires and ground in IT, common mode voltage coarse protection to ground/earth. Design: 12 V DC
Ambient conditionsAmbient temperature (operation) -40 °C ... 85 °C
Altitude max. 2000 m
Degree of protection IP20
GeneralHousing material PA
Flammability rating according to UL 94 V-0
Color black
Standards for cearances and creepage distances DIN EN 61664-1
IEC 60664-1
Mounting type on base element
Type Male
Number of positions 3
Direction of action Line-Line & Line-Signal Ground/Shield & optional Signal Ground/Shield-Earth Ground
Arrester can be tested with CHECKMASTER from software version: From SW rev. 1.10
Protective circuitIEC test classification C1
C2
C3
D1
VDE requirement class C1
C2
C3
D1
Nominal voltage UN 12 V DC
Maximum continuous voltage UC 14 V DC
9.8 V AC
Rated current 450 mA (45 °C)
Operating effective current IC at UC ≤ 5 µA
Residual current IPE < 5 µA (with PT 1X2-BE)
< 1 µA (with PT 1X2+F-BE)
Nominal discharge current In (8/20) µs (line-line) 10 kA
Nominal discharge current In (8/20) µs (line-earth) 10 kA
Nominal discharge current In (8/20) µs (line-signal ground) 10 kA
Pulse discharge current Iimp (10/350) µs 2.5 kA
Total discharge current Itotal (8/20) µs 20 kA
Max. discharge current Imax (8/20) µs maximum (line-line) 10 kA
Max. discharge current Imax (8/20) µs maximum (line-earth) 10 kA
Nominal pulse current Ian (10/1000) µs (line-line) 67 A
Output voltage limitation at 1 kV/µs (line-line) spike ≤ 55 V
Output voltage limitation at 1 kV/µs (line-earth) spike ≤ 55 V (with PT 1X2-BE)
≤ 700 V (with PT 1X2+F-BE)
Output voltage limitation at 1 kV/µs (line-line) static ≤ 25 V
Output voltage limitation at 1 kV/µs (line-earth) static ≤ 25 V
≤ 40 V (with PT 1X2+F-BE)
Residual voltage at In (line-line) ≤ 25 V
Residual voltage at In (line-earth) ≤ 40 V (with PT 1X2-BE)
Residual voltage at In (line-signalground) ≤ 25 V (with PT 1X2-BE)
Residual voltage with Ian (10/1000) µs (line-line) ≤ 25 V
Residual voltage with Ian (10/1000) µs (line-signalground) ≤ 25 V
Voltage protection level Up (line-line) ≤ 50 V (C3 - 25 A)
≤ 80 V (C1 - 1 kV / 500 A)
≤ 110 V (C2 - 10 kV / 5 kA)
≤ 80 V (6 kV / 3 kA)
Voltage protection level Up (line-earth) ≤ 50 V (C3 - 25 A)
≤ 85 V (C1 - 1 kV / 500 A)
≤ 140 V (C2 - 10 kV / 5 kA)
≤ 100 V (6 kV / 3 kA)
Voltage protection level Up (line-signalground) ≤ 50 V (C3 - 25 A)
Response time tA (line-line) ≤ 500 ns
Response time tA (line-earth) ≤ 500 ns
Input attenuation aE, sym. typ. 0.3 dB (≤ 5 MHz / 100 Ω)
Cut-off frequency fg (3 dB), sym. in 100 Ω system typ. 60 MHz
Capacity (line-line) typ. 30 pF
Resistance per path 2.2 Ω ±10 % (7-8/11-12)
Max. required back-up fuse 500 mA (T)
Impulse durability (line-line) C2 - 10 kV / 5 kA
C3 - 67 A
Impulse durability (line-earth) C2 - 10 kV / 5 kA
C3 - 67 A
D1 - 2.5 kA
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