Project Description
SLP20-275/2S+1
Description
Modular surge arrester for use in TT and TN systems (“2+1” circuit) with floating remote signaling contact.
- Prewired complete unit consisting of a base part and plug-in protection modules
- High discharge capacity due to heavy duty zinc oxide varistors/spark gaps
- High reliability due to “Thermo Dynamic Control” SPD monitoring device
Type | SLP20-275/2+1 | SLP20-275/2S+1 |
SPD according to EN 61643-11 / IEC 61643-11 | type 2 + type 3 / class II + class III | type 2 + type 3 / class II + class III |
Nominal a.c. voltage Un | 230 / 400 V AC (50/60 Hz) | 230 / 400 V AC (50/60 Hz) |
Max. continuous operating a.c. voltage [L-N] Uc | 275 V AC (50/60 Hz) | 275 V AC (50/60 Hz) |
Max. continuous operating a.c. voltage [N-PE] Uc | 255 V AC (50/60 Hz) | 255 V AC (50/60 Hz) |
Nominal discharge current (8/20μs) In | 10 kA | 10 kA |
Maximum discharge current (8/20μs) Imax | 20 kA | 20 kA |
Combination wave (1.2/50μs) Uoc | 10 kV | 10 kV |
Leakage current IPE | < 1 mA | < 1 mA |
Nominal load current a.c IL | 20 A | 20 A |
Voltage protection level [L-N] UP | 1,2 kV | 1,2 kV |
Voltage protection level [N-PE] UP | 1,0 kV | 1,0 kV |
Response time [L-N] tA | 25 ns | 25 ns |
Response time [N-PE] tA | 100 ns | 100 ns |
Max. mains-side over-current protection | 125 A gL/gG | 125 A gL/gG |
Short-circuit current rating ISCCR | 10 kArms | 10 kArms |
Temporary overvoltage (TOV) [L-N] (UT) – Characteristic | 335 V / 5 sec. – withstand | 335 V / 5 sec. – withstand |
Temporary overvoltage (TOV) [L-N] (UT) – Characteristic | 440 V / 120 min. – safe failure | 440 V / 120 min. – safe failure |
Temporary overvoltage (TOV) [L/N-PE] (UT) – Characteristic | 335 V / 120 min. – withstand | 335 V / 120 min. – withstand |
Temporary overvoltage (TOV) [L/N-PE] (UT) – Characteristic | 440 V / 5 sec. – withstand | 440 V / 5 sec. – withstand |
Temporary overvoltage (TOV) [N-PE] (UT) – Characteristic | 1200 V / 200 ms – safe failure | 1200 V / 200 ms – safe failure |
Range of operating temperatures (TU) | -40/+80°C | -40/+80°C |
Operating state / fault indication | green / red | green / red |
Number of ports | 1 | 1 |
Cross-sectional area (min.) | 1.5 mm2 solid /flexible | 1.5 mm2 solid /flexible |
Cross-sectional area (max.) | 35 mm2 stranded / 25 mm2 flexible | 35 mm2 stranded / 25 mm2 flexible |
For mounting on | 35 mm DIN rail acc. to EN 60715 | 35 mm DIN rail acc. to EN 60715 |
Enclosure material | thermoplastic | thermoplastic |
Place of installation | indoor installation | indoor installation |
Degree of protection | IP 20 | IP 20 |
Capacity | 3 module(s), DIN 43880 | 3 module(s), DIN 43880 |
Approvals | CE | CE |
Type of remote signalling contact | – | changeover contact |
a.c. switching capacity | – | 250V / 0.5 A |
d.c. switching capacity | – | 250V / 0.1 A; 125 V / 0.2 A; 75 V / 0.5 A |
Cross-sectional area for remote signalling terminals | – | max. 1.5 mm2 solid / flexible |