3EB5
Railway Surge Arrester 3EB5 Cage Design, AC 15/25 kV and DC 0.75–3 kV railway traction, silicone
3EB5
- Metal-oxide surge arrester with Cage Design: MOV blocks enclosed by a cage of FRP rods, silicone rubber sheds directly molded onto resistors and end-fittings — no sealed shell, no gaps, partial discharges and moisture ingress prevented
- Suitable for rail vehicles with speeds up to 320 km/h (200 mph) and for stationary application in areas accessible to the public
- One family covers AC 15/25 kV catenary (Ur 23–45 kV) and DC 750 V / 1.5 kV / 3 kV traction (Ur 1.0–4.8 kV)
- Safe overload behavior — the arc escapes directly through the soft silicone housing, no critical internal pressure, ejection of internal parts almost completely prevented; rated short-circuit current up to 65 kA
- Duty classes SM (10 kA, Qrs 2.0 C) and SH (20 kA, Qrs 2.8 C or extended 3.6 C); hydrophobic, self-extinguishing and flame-retardant silicone housing
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3EB5 covers up to 25 kV of the railway arresters range (≤ 25 kV across the category, √ scale).
Specifications
Main
| Product family | 3EB5 |
| Product type | Metal-oxide surge arrester, Cage Design (silicone rubber housing) |
| Application | Railway traction power systems — rail vehicles up to 320 km/h and stationary installations in publicly accessible areas |
| Systems | AC 15 kV and 25 kV · DC 0.75 kV, 1.5 kV and 3.0 kV nominal system voltage |
| Mounting | Single mounting variant 0D (grounded base flange, bolt circle ø140/ø162 mm, M12) |
Electrical
| Nominal system voltage Un | AC: 15 / 25 kV · DC: 0.75 / 1.5 / 3.0 kV |
| Rated voltage Ur | AC: 23 – 45 kV · DC: 1.0 – 4.8 kV |
| Continuous operating voltage Uc | AC: 18 – 36 kV · DC: 1.0 – 4.8 kV |
| Nominal discharge current In | 10 kA (designation SM) · 20 kA (designations SH and DC-B) |
| Charge transfer rating Qrs | 2.0 C (SM) · 2.8 C (SH) · 3.6 C (extended SH and all DC types) |
| Thermal energy rating Wth | 161 – 630 kJ (AC types) · 14 – 67 kJ (DC types) |
| Residual voltage at 20 kA (8/20 µs) | 56.4 – 117 kV (AC types, by Ur/class) · 2.5 – 11.8 kV (DC types) |
| Rated short-circuit current Is | 50 kA (SM, Figure B) · 65 kA (SH Figure C and DC Figure A) |
| Housing insulation withstand | Lightning impulse 1.2/50 µs: 105 – 250 kV · power-frequency 1 min wet: 50 – 120 kV, by housing size |
Mechanical / environment
| Housing material | Silicone rubber, directly molded — hydrophobic, self-extinguishing, flame-retardant, high tracking and erosion resistance |
| Design | Cage Design — MOVs enclosed by FRP-rod cage; three housing shapes: Figure A (DC), Figure B (SM), Figure C (SH) |
| Height H | 172 mm (DC) · 281 – 436 mm (AC types) |
| Creepage distance | 390 mm (DC) · 860 – 1480 mm (AC types) |
| Flashover distance | 182 mm (DC) · 288 – 438 mm (AC types) |
| Specified short-term load SSL | 2290 – 5330 N (AC types) · 8720 N (DC types) |
| Specified long-term load SLL | 1600 – 3730 N (AC types) · 6100 N (DC types) |
| Weight | 4.9 – 5.5 kg (DC) · 6.4 – 16.0 kg (AC types) |
| Max. travel speed | 320 km/h (200 mph) |
| Terminal / mounting interface | Stud terminal M12x24 / M16x32, ø50 mm contact face; base mounting 0D with M12x20, bolt circle ø140/ø162 mm (dimension drawings, catalog p. 9) |
| Ambient temperature | −40 °C … +70 °C (per railway product-guide dataset) |
Standards & certifications
| Standards | IEC 60099-4 (metal-oxide surge arresters) — per railway product-guide dataset |
| Railway standards | DIN EN 50526-1 (railway DC surge arresters), DIN EN 45545-2 (fire protection of railway vehicles), IEC 61373 (shock and vibration) — per railway product-guide dataset |
Options & variants
Complete type list from the 3EB5 mini-catalog table (railway catalog pp. 10–11). All types: max. travel speed 320 km/h, single mounting 0D. Types with 8th order-number digit '8' carry the extended charge-transfer rating Qrs 3.6 C (labeled SH+ in the configurator dataset; catalog table prints the designation as SH). Full per-type residual-voltage curves (30/60 µs 0.5–2 kA and 8/20 µs 5–20 kA), creepage, SSL/SLL, withstand voltages and weights are in the attached technical-data PDF.
| Type | Un (kV) | Ur (kV) | Uc (kV) | Designation | In (kA) | Qrs (C) | Wth (kJ) | Height (mm) | Isc (kA) | Figure |
|---|---|---|---|---|---|---|---|---|---|---|
| 3EB5 230-6AE30-0D | 15 | 23 | 18 | SM | 10 | 2.0 | 161 | 301 | 50 | B |
| 3EB5 230-7AE30-0D | 15 | 23 | 18 | SH | 20 | 2.8 | 230 | 281 | 65 | C |
| 3EB5 230-8AE30-0D | 15 | 23 | 18 | SH | 20 | 3.6 | 322 | 281 | 65 | C |
| 3EB5 370-6AG30-0D | 25 | 37 | 30 | SM | 10 | 2.0 | 259 | 391 | 50 | B |
| 3EB5 370-7AG30-0D | 25 | 37 | 30 | SH | 20 | 2.8 | 370 | 353 | 65 | C |
| 3EB5 370-8AH30-0D | 25 | 37 | 30 | SH | 20 | 3.6 | 518 | 389 | 65 | C |
| 3EB5 420-6AG30-0D | 25 | 42 | 34 | SM | 10 | 2.0 | 294 | 391 | 50 | B |
| 3EB5 420-7AH30-0D | 25 | 42 | 34 | SH | 20 | 2.8 | 420 | 389 | 65 | C |
| 3EB5 420-8AJ30-0D | 25 | 42 | 34 | SH | 20 | 3.6 | 588 | 425 | 65 | C |
| 3EB5 450-6AH30-0D | 25 | 45 | 36 | SM | 10 | 2.0 | 315 | 436 | 50 | B |
| 3EB5 450-7AJ30-0D | 25 | 45 | 36 | SH | 20 | 2.8 | 450 | 425 | 65 | C |
| 3EB5 450-8AJ30-0D | 25 | 45 | 36 | SH | 20 | 3.6 | 630 | 425 | 65 | C |
| 3EB5 010-8DB30-0D | 0.75 | 1.0 | 1.0 | DC-B | 20 | 3.6 | 14 | 172 | 65 | A |
| 3EB5 015-8DB30-0D | 0.75 | 1.5 | 1.5 | DC-B | 20 | 3.6 | 21 | 172 | 65 | A |
| 3EB5 020-8DB30-0D | 1.5 | 2.0 | 2.0 | DC-B | 20 | 3.6 | 28 | 172 | 65 | A |
| 3EB5 030-8DB30-0D | 1.5 | 3.0 | 3.0 | DC-B | 20 | 3.6 | 42 | 172 | 65 | A |
| 3EB5 045-8DB30-0D | 3.0 | 4.5 | 4.5 | DC-B | 20 | 3.6 | 63 | 172 | 65 | A |
| 3EB5 048-8DB30-0D | 3.0 | 4.8 | 4.8 | DC-B | 20 | 3.6 | 67 | 172 | 65 | A |
Documents & downloads
Catalog Mini catalog — 3EB5 surge arresters with silicone rubber housing and Cage Design (description, dimensions, terminal and mounting drawings)
Datasheet 3EB5 technical data — electrical and mechanical characteristics, all 18 AC/DC types
Also covered in the technical library
Brochure Our portfolio of surge arresters & composite insulators — Siemens Energy
Catalog Surge arresters for railway applications — Product guide
Ordered designations
Representative orderable type designations of this family — searchable via the catalog search.
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