https://www.phoenixcontact.com/pi/products/2920722
08/19/2018Page2/5
Surge protection device-TT-2/2-M-24DC-2920722
Technical data
General
Color jet black RAL 9005
Mounting type DIN rail: 35 mm
Type Double-level terminal block with PE foot – separate PE connection
Number of positions 2
Direction of action Line-Earth Ground
Protective circuit
IEC test classification C1
C2
C3
D1
Nominal voltage U
N
24 V DC
Maximum continuous voltage U
C
30 V DC
21 V AC
Rated current 300 mA (40 °C)
Operating effective current I
C
at U
C
≤ 5 µA
Residual current I
PE
≤ 10 µA
Nominal discharge current I
n
(8/20) µs (line-line)
5 kA
Nominal discharge current I
n
(8/20) µs (line-earth)
5 kA
Pulse discharge current I
imp
(10/350)µs (line-earth)
500 A
Total discharge current I
total
(8/20)µs
10 kA
Nominal pulse current Ian (10/1000) µs (line-earth) 30 A
Output voltage limitation at 1 kV/µs (line-earth) spike ≤ 45 V
Output voltage limitation at 1 kV/µs (line-earth) static ≤ 45 V
Residual voltage at I
n
(line-earth)
≤ 45 V
Residual voltage with Ian (10/1000) µs (line-earth) ≤ 50 V
Voltage protection level U
p
(line-earth)
≤ 55 V (C1 - 500 V / 250 A)
≤ 85 V (C2 - 10 kV / 5 kA)
Response time t
A
(line-earth)
≤ 1 ns
Input attenuation aE, asym. typ. 0.5 dB (≤ 1.5 MHz / 50 Ω)
typ. 0.2 dB (≤ 400 kHz / 150 Ω)
Cut-off frequency fg (3 dB), asym. (PE) in 50 Ohm system typ. 6 MHz
Cut-off frequency fg (3 dB), asym. (PE) in 150 Ohm system typ. 2.5 MHz
Capacity (line-earth) < 2.5 nF
Resistance in series 4.7 Ω ±20 %
Surge protection fault message none
Max. required back-up fuse 315 mA (T)
Impulse durability (line-earth) C1 - 500 V / 250 A
C2 - 10 kV/5 kA
D1 - 500 A
