Disassembling various brand T1+T2, Class B+C, Class I+II, Iimp 25kA surge protective device SPD
1. Dehn (Germany)
Dehn lightning current and surge arrester DV M TT 2P 255 FM T1+T2, Class B+C, Class I+II surge protective device SPD
Type: DV M TT 2P 255 FM, Part No.: 951115
- Prewired combined spark-gap-based lightning current and surge arrester, consisting of a base part and plug-in protection modules
- Maximum system availability due to RADAX Flow follow current limitation
- No tripping of 20 A gL/gG fuses up to 50 kArms short-circuit currents
- Lightning current discharge capacity: 50 kA (10/350 µs)
- Allows for protection of terminal equipment
- Fault indication by red mark in the inspection window
- Easy exchange of protection modules by module locking system with releasing the button
Modular combined lightning current and surge arrester for protecting single-phase TT and TN systems (“1+1” circuit) against surges
SPD according to EN 61643-11 / IEC 61643-11 | type 1 + type 2 / class I + class II |
Energy coordination with terminal equipment (<10 m) | type 1 + type 2 + type 3 |
Nominal voltage (a.c.) (UN) | 230 V (50 / 60 Hz) |
Max. continuous operating voltage (a.c.) [L-N] (UC) | 264 V (50 / 60 Hz) |
Max. continuous operating voltage (a.c.) [N-PE] (UC (N-PE)) | 255 V (50 / 60 Hz) |
Lightning impulse current (10/350 μs) [L+N-PE] (Itotal) | 50 kA |
Lightning impulse current (10/350 μs) [L-N]/[N-PE] (Iimp) | 25 / 50 kA |
Nominal discharge current (8/20 μs) [L-N]/[N-PE] (In) | 25 / 50 kA |
Dehn DV Series 255 V ac Maximum Voltage Rating 100kA Maximum Surge Current Lightning Arrester, DIN Rail Mounting
Type: DV M TT 255 FM, Part No.: 951315
SPD according to EN 61643-11 / IEC 61643-11 | type 1 + type 2 / class I + class II |
Energy coordination with terminal equipment (≤ 10 m) | type 1 + type 2 + type 3 |
Nominal voltage (a.c.) (UN) | 230 / 400 V (50 / 60 Hz) |
Max. continuous operating voltage (a.c.) [L-N] (UC) | 264 V (50 / 60 Hz) |
Max. continuous operating voltage (a.c.) [N-PE] (UC (N-PE)) | 255 V (50 / 60 Hz) |
Lightning impulse current (10/350 μs) [L1+L2+L3+N-PE] (Itotal) | 100 kA |
Lightning impulse current (10/350 μs) [L-N]/[N-PE] (Iimp) | 25 / 100 kA |
Nominal discharge current (8/20 μs) [L-N]/[N-PE] (In) | 25 / 100 kA |
Dehn 255 V ac 100kA DV Lightning Arrester, DIN Rail Mounting
Type: DV M TNS 255, Part No.: 951400
SPD according to EN 61643-11 / IEC 61643-11 | type 1 + type 2 / class I + class II |
Energy coordination with terminal equipment (≤ 5 m) | type 1 + type 2 + type 3 |
Nominal voltage (a.c.) (UN) | 230 / 400 V (50 / 60 Hz) |
Max. continuous operating voltage (a.c.) (UC) | 264 V (50 / 60 Hz) |
Lightning impulse current (10/350 µs) [L1+L2+L3+N-PE] (Itotal) | 100 kA |
Lightning impulse current (10/350 µs) [L, N-PE] (Iimp) | 25 kA |
Nominal discharge current (8/20 µs) [L/N-PE]/[L1+L2+L3+N-PE] (In) | 25 / 100 kA |
2. Phoenix (Germany)
Phoenix lightning current and surge arrester T1+T2, Class B+C, Class I+II surge protective device SPD
Surge protection for the power supply
Combination type 1/2 protective device – FLT-SEC-P-T1-1S-350/25-FM, order no. 2905415
- Spark gap has no line follow current
- Free of leakage current, suitable for use in the pre-meter area
- The high continuous voltage of 350 V AC for 230/400 V AC networks with high voltage` fluctuations
- Pluggable
- Low voltage protection level of 1.5 kV
- Optical, mechanical status indicator
- With floating remote indication contact
IEC test classification | I / II , T1 / T2 |
Nominal voltage UN | 240 V AC (TN-S) 240 V AC (TT) |
Mode of protection | L-N / L-PE / N-PE |
Maximum continuous operating voltage UC | 350 V AC |
Impulse discharge current Iimp (10/350) μs | 25 kA / 25 kA / 100 kA |
Nominal discharge current In (8/20) μs | 25 kA / 25 kA / 100 kA |
Max. discharge current Imax (8/20) μs | 50 kA |
3. Raycap (Germany) & Iskra Zascite (Slovenia)
Lightning and overvoltage protection Class I Class II Type 1 Type 2 Type 4CA
Type: ProTec T1HS-300-3+1-R, Order Code: 59.0307
- Location of Use: Main Distribution Boards
- Network Systems: TT, TN-S
- Mode of Protection: L-N, N-PE
- IEC/EN/UL Category: Class I+II, Type 1+2, Type 4CA
- Technology: Hybrid
- Leakage Current Free: Yes
- Housing: Pluggable Design
- Compliance: IEC 61643-11: 2011; EN 61643-11: 2012; UL 1449 4th Edition
Nominal AC Voltage (50/60Hz) Uo / Un | 240 V |
Maximum Continuous Operating Voltage (AC) (L-N) / (N-PE) Uc | 300 V / 305 V |
Nominal Discharge Current (8/20 μs) (L-N) / (N-PE) In | 25 kA / 100 kA |
Maximum Discharge Current (8/20 μs) (L-N) / (N-PE) Imax | 65 kA / 130 kA |
Impulse Discharge Current (10/350 μs) (L-N) / (N-PE) Iimp | 25 kA / 100 kA |
Sprcific Energy (L-N)/(N-PE) W/R | 156.2kJ/Ω/2500kJ/Ω |
Charge (L-N) / (N-PE) Q | 12.5 As / 50 As |
Voltage Protection Level (L-N) / (N-PE) Up | 1500 V / 1500 V |
Rated Load Current IL | 100 A |
Response Time (L-N) / (N-PE) tA | < 100 ns / < 100 ns |
Overcurrent Protection (max) | 315 A gG |
Short-Circuit Current Rating (AC) ISCCR | 50 kA |
Follow Current Interrupt Rating (N-PE) Ifi | 100 ARMS |
TOV Withstand 120min (L-N) UT | 442 V |
TOV Withstand 200ms (N-PE) UT | 1200 V |
Number of ports | 1 |
Maximum Continuous Operating Voltage (AC) (L – N) / (N – G) MCOV | 300 V / 305 V |
Measured Limiting Voltage (L – N) / (N – G) MLV | 1280 V / 1000 V |
Nominal Discharge Current (8/20 μs) (L – N) / (N – G) In | 20 kA |
Operating Temperature Range Ta | -40 oF to +185 oF [-40 oC to +85 oC] |
Permissible Operating Humidity RH | 5%…95% |
Altitude | 13123 ft [4000 m] |
Terminal Screw Torque Mmax | 39.9 Ibf·in [4.5 Nm] |
Conductor Cross Section (max) | 2 AWG (Solid, Stranded) / 4 AWG (Flexible) |
35 mm2 (Solid, Stranded) / 25 mm2 (Flexible) | |
Mounting | 35 mm DIN Rail, EN 60715 |
Degree of Protection | IP 20 (built-in) |
Housing Material | Thermoplastic: Extinguishing Degree UL 94 V-0 |
Thermal Protection | Yes |
Operating State / Fault Indication | Green Flag / Not Green Flag |
Remote Contacts (RC) | Optional |
RC Switching Capacity | AC: 250 V / 1A, 125 V / 1 A; DC: 48 V / 0.5 A, 24 V / 0.5 A, 12 V / 0.5 A |
RC Conductor Cross Section (max) | 16 AWG (Solid) / 1.5 mm2 (Solid) |
4. Citel (France)
Type 1+2+3 AC Surge Protector DS250VG series
CITEL Model: DS250VG-300, Part number: 2577
- Type 1 + 2 + 3 Surge protector
- 25 kA on 10/350 μs impulse
- Low voltage UP
- Internal disconnection, status indicator and remote signaling
- Optimized to TOV
- IEC 61643-11 and EN 61643-11 compliance
- UL 1449 ed. 4 recognition
Description | Type 1+2+3 AC surge protector one-pole |
Network | 230/400 V |
Max. AC operating voltage (UC) | 255 Vac |
Temporary Over Voltage (TOV) Charasteristics – 5 sec. (UT) | 335 Vac withstand |
Temporary Over Voltage (TOV) Charasteristics – 120 mn (UT) | 440 Vac withstand |
Residual current – Leakage current at Uc (Ipe) | None |
Max. Load current (if connection serie) (IL) | 100 A |
Follow current (If) | None |
Nominal discharge current – 15 x 8/20 µs impulses (In) | 30 kA |
Max. discharge current -max. withstand @ 8/20 µs by pole (Imax) | 70 kA |
Impulse current by pole – max. withstand 10/350µs (Iimp) | 25 kA |
Specific energy by pole (W/R) | 156 kJ/ohm |
Withstand on Combination waveform – Class III test (Uoc) | 20 kV |
Protection level @ In (Up-in) | 1.1 kV |
Protection level (Up) | 1.5 kV |
Admissible short-circuit current (Isccr) | 50000 A |
Thermal disconnector | internal |
Fuses | Fuses type gG – 315 A |
Installation ground fault breaker | Type < |
Dimensions | see diagram |
Connection to Network | By screw terminals : 6-35 mm2 / by bus |
Disconnection indicator | 1 mechanical indicator |
Remote signaling of disconnection | output on changeover contact |
Mounting | Symmetrical rail 35 mm (EN60715) |
Operating temperature | -40/+85°C |
Protection rating | IP20 |
Housing material | Thermoplastic UL94-V0 |
Standards compliance | IEC 61643-11 / EN 61643-11 / UL1449 ed.4 |
Certification | UL / CSA / EAC |
Part number | 2577 |
5. Saltek (Czech)
OEM for Schneider, let’s take Schneider’s sample for example.
SPD Type 1 – Lightning Current Arrester FLP-25-T1-V(S)-3+1, ordering number.: A05305
pluggable module, visual fault signalling, module locking
- combination of three-pole high performance lightning current arrester and encapsulated efficiency spark gap, connected in the 3+1 mode
- installation at the boundary of zones LPZ 0 and LPZ 1 or higher, mainly to main distribution boards
- for protection against impact of direct or indirect lightning strikes in wide range of applications – houses, office and industrial buildings
- coordination with SPD Type 2 (SLP-275 V) even without surge separating inductors
- optional remote fault signalling (S)
- no leakage current
Nominal voltage Un | 230 V AC |
Maximum operating voltage L-N Uc | 260 V AC |
Maximum operating voltage N-PE Uc | 255 V AC |
Nominal load current for “V” connection IL | 125 A |
Lightning impulse current (10/350 μs) L-N Iimp | 25 kA |
Lightning impulse current (10/350 μs) N-PE Iimp | 100 kA |
Voltage protection level mode L-N Up | 1,5 kV |
Voltage protection level mode N-PE Up | 1,5 kV |
Voltage protection level mode L-PE Up | 2,2 kV |
Ability to independently switch off the following current N-PE Ifi | 0,1 kA |
Short-circuit current rating ISCCR | 50 kA |
Maximum overcurrent protection | 250 A gL/gG |
Maximum overcurrent protection for “V” connection | 125 A gL/gG |
Response time L-N ta | 100 ns |
Response time N-PE ta | 100 ns |
Cross-section of connected conductors solid (min/max) | 2,5 mm2 / 50 mm2 |
Cross-section of connected conductors stranded (min/max) | 2,5 mm2 / 35 mm2 |
Fault indication L-N | red indication field |
Fault indication N-PE | no |
Remote indication | potential-free change-over contact |
Remote indication contacts | 250V/0,5A AC,250V/0,1A DC |
Cross-section of remote indication conductors | 1,5 mm2 |
Degree of protection | IP 20 |
Range of operating temperatures (min/max) | -40 °C / 80 °C |
Mounting | DIN rail 35 mm |
According to standard | EN 61643-11:2012, IEC 61643-11:2011 / T1 |
6. Weidmuller (Germany)
Weidmuller lightning arrester VPU I 1+1-R LCF 280V / 25kA (Order no. 1351740000)
- Type I/II lightning arrester for use upstream of the electrical meter
- With 25 kA (10/350 µs) suitable for protective zones I, II, III and IV (LPL I/II/III/IV)
- With remote monitoring function, one changeover contact
- Tested according to IEC 61643-11 for type I and II surge protection
- Pluggable arrester
Type | VPU I 1+1 R LCF 280V/25KA |
Order No. | 1351740000 |
Version | Surge voltage arrester, Low voltage, with remote contact, Leakage-current-free, Single-phase, IT with N, IT without N, TN |
Rated voltage (AC) | 230 V |
Voltage type | AC |
Max. continuous voltage, Uc (AC) | 280 V |
Max. continuous voltage, Uc (N-PE) | 260 V |
Low voltage network | Single-phase, IT with N, IT without N, TN |
Discharge current In (8/20µs) N-PE | 100 kA |
Discharge current Imax (8/20µs) N-PE | 100 kA |
Discharge current In (8/20µs) wire-PE | 25 kA |
Discharge current Imax (8/20µs) wire-PE | 100 kA |
Lightning test current Iimp (10/350 µs) (L-PE) | 25 kA |
Lightning test current, Iimp (10/350 µs) (N-PE) | 100 kA |
Frequency range, max. | 60 Hz |
Frequency range, min. | 50 Hz |
Fuse | No Fuse neccessary ≤250 A gG, 250 A gL (if back up fuse > 250 A) |
Short-circuit current rating (ISCCR) | 25 kA |
Follow-on current extinguishing capability Ifi | Not available due for technical reasons |
Standards | IEC61643-11, EN61643-11 |
Energy coordination (≤10 m) | Type I, Type II, Type III |
Protection level Up at IN (L/N-PE) | ≤ 1.6 kV |
Protection level Up at IN (N-PE) | ≤ 1.6 kV |
Leakage current at Un | 1 µA |
Temporary surge voltage (over-voltage) – TOV | 438 V |
Number of poles | 1 |
Rated load current IL | 125 A |
Requirements category acc. to IEC 61643-11 | Type I, Type II |
Requirements class, acc. to EN 61643-11 | T1, T2 |
Response time | ≤ 100 ns |
Signalling contact | 250 V 1A 1CO |
Suitable for | Count-in installation (leakage current free) |
Primary analysis result:
Dehn and Phoenix use the encapsulated spark gap to make T1(T1+T2) SPD.
Raycap, Citel, Saltek and Weidmuller use high energy varistors plus gas discharge tube (GDT) to make T1(T1+T2) SPD.