Lightning Protection Products
DEHNguard M TT (FM)
Product No：Pro200964104546
Product Model：DEHNguard M TT (FM)
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DEHNguard M TT (FM)
DEHNguard M TT ... (FM) Dimension drawing DG M TT ... FM Basic circuit diagram DG M TT ... FM
DG M TT ... (FM): Modular surge arrester for use in TT and TN-S systems (3+1 circuit)
| DG M TT 275 | DG M TT 275 FM | ||||||||||||||||||
| Type of SPD according to EN 61643-11 | Type 2 | Type 2 | |||||||||||||||||
| SPD according to IEC 61643-1 | Class II | Class II | |||||||||||||||||
| Nominal a.c. voltage [UN] | 230/400 V | 230/400 V | |||||||||||||||||
| Max. continuous operating a.c. voltage [L-N] [UC] | 275 V | 275 V | |||||||||||||||||
| Max. continuous operating a.c. voltage [N-PE] [UC] | 255 V | 255 V | |||||||||||||||||
| Nominal discharge current (8/20 µs) [In] | 20 kA | 20 kA | |||||||||||||||||
| Max. discharge current (8/20 µs) [Imax] | 40 kA | 40 kA | |||||||||||||||||
| Lightning impulse current (10/350 µs) [N-PE] [Iimp] | 12 kA | 12 kA | |||||||||||||||||
| Voltage protection level [L-N] [UP] | ≤ 1.25 kV | ≤ 1.25 kV | |||||||||||||||||
| Voltage protection level [L-N] for 5 kA [UP] | ≤ 1 kV | ≤ 1 kV | |||||||||||||||||
| Voltage protection level [N-PE] [UP] | ≤ 1.5 kV | ≤ 1.5 kV | |||||||||||||||||
| Follow current extinguishing capability [N-PE] [Ifi] | 100 Arms | 100 Arms | |||||||||||||||||
| Response time [L-N] [tA] | ≤ 25 ns | ≤ 25 ns | |||||||||||||||||
| Response time [N-PE] [tA] | ≤ 100 ns | ≤ 100 ns | |||||||||||||||||
| Max. mains-side overcurrent protection | 125 A gL/gG | 125 A gL/gG | |||||||||||||||||
| Short circuit withstand capability for max. mains-side overcurrent protection | 50 kArms | 50 kArms | |||||||||||||||||
| Temporary overvoltage (TOV) [L-N] [UT] | 335 V / 5 sec. | 335 V / 5 sec. | |||||||||||||||||
| Temporary overvoltage (TOV) [N-PE] [UT] | 1200 V / 200 ms | 1200 V / 200 ms | |||||||||||||||||
| Operating temperature range [TU] | -40°C...+80°C | -40°C...+80°C | |||||||||||||||||
| Operating state/fault indication | green / red | green / red | |||||||||||||||||
| 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 | red thermoplastic, UL 94 V-0 | red thermoplastic, UL 94 V-0 | |||||||||||||||||
| Degree of protection | IP 20 | IP 20 | |||||||||||||||||
| Dimension | 4 mods., DIN 4 | 4 mods., DIN 4 | |||||||||||||||||
| Approvals, Certifications | KEMA, VDE, UL, VdS | KEMA, VDE, UL, VdS | |||||||||||||||||
| Type of remote signalling contact | -- | changeover contact | |||||||||||||||||
| Switching capacity a.c. | -- | 250 V/0.5 A | |||||||||||||||||
| Switching capacity d.c. | -- | 250 V/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 | |||||||||||||||||
| 1 pcs. | 1 pcs. | ||||||||||||||||||
| ordering information | |||||||||||||||||||
| Type | DG M TT 275 | DG M TT 275 FM | |||||||||||||||||
| Part No. | 952 310 | 952 315 | |||||||||||||||||
| Packing unit | 1 pc(s) | ||||||||||||||||||
