Page 454 - Din prodcuts 2020

5/10 ELECTRICAL INSTALL ATION SOLUTIONS FOR BUILDINGS 2CHC 420 001 C0201

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Protection and safety
OVR Type 1 surge protective devices

Technical features
Type codes OVR T1 25-255-7 OVR T1 3N 25-255-7
with auxiliary contact (TS) – –
5
Technology Spark-gap Spark-gap + GDT
Electrical features
Standard IEC 61643-1/EN 61643-11 IEC 61643-1/EN 61643-11
Type/test class T1/I T1/I
Protected lines 1 3+1
OVR T1 25-255-7 Types of networks TNC/TT(L-N)-TNS TNS-TT
Type of current AC 47-63 Hz AC 47-63 Hz
Voltage regulation of the system ± 10 % ± 10 %
Nominal voltage Un [V] 230 230
Maximum continuous operating [V] 255 255
voltage Uc
Maximum impulse current Iimp [kA] 25 25
(10/350)
Maximum impulse current Tot. Iimp [kA] 25 100
(10/350)
Nominal discharge current In (8/20) [kA] 25 25
Follow current interrupting rating Ifi [kA] 7 7
Voltage protection level Up at In [kV] ≤ 2.5 2.0/2.0/2.0
Voltage protection level Ures at 3 kA [kV] ≤ 0.9 0.9/0.9/0.9
TOV (Temporary overvoltage)
withstand Ut
(L-N: 5 s /N-PE: [V] 650/– 650/1200
200 ms)
Response time [ns] ≤ 100 ≤ 100
Residual current IPE [µA] 10 1000
Short-circuit withstand [kA] 50 50
capability Isccr
Backup protection Fuse (gG) [A] ≤ 125 ≤ 125
Circuit breaker [A] ≤ 125 ≤ 125
(B or C curve)
Pluggable cartridge No No
Integrated thermal disconnector – –
State indicator Yes Yes
Safety reserve No No
Auxiliary contact No No
Installation
Wire range Solid wire [mm²] 2.5…50 2.5…50
(L, N, PE) Stranded wire [mm²] 2.5…35 2.5…35
Stripping length (L, N, PE) [mm] 15 15
Tightening torque (L, N, PE) [Nm] 3.5 3.5
Auxiliary contact (TS)
Contact complement – –
Minimum load – –
Maximum load – –
Connection cross-section [mm²] – –
Miscellaneous characteristics
Stocking and operating temperature [°C] -40 to +80 -40 to +80
Maximal Altitude [m] 2000 2000
Degree of protection IP20 IP20
Fire resistance according to UL 94 V-0 V-0
Dimensions height x width x [mm] 85 x 17.8 x 70.8 85 x 89 x 70.8
depth [inches] 3.34 x 0.70 x 2.78 3.34 x 3.50 x 2.78
Dimensions with height x width x [mm] – –
auxiliary contact (TS) depth [inches] – –