Pantograph disconnector 3DN3, scissor design, up to 5,000 A, peak withstand up to 160 kA, PRF2/PRL2 (PR series)
3DN3
- Vertical disconnection enables diagonal busbar arrangements and space-saving substation layouts — the smallest footprint in the disconnector range
- Spherical contacts for optimal, non-sensitive contact and high reliability; factory pre-adjusted subassemblies make set-up easy
- High contact force gives excellent ice-breaking (icing class 10/20 mm) and short-circuit behaviour; self-interlocked end position keeps operation safe even during movement, e.g. in an earthquake
- Corrosion-free materials — hot-dip galvanised steel and weather-proof aluminium alloys — for extremely long service life; maintenance interval 25 years
- Optional 1,600 A bus-transfer capability; exceeds IEC and meets GOST R and GB/DL standards
Space-constrained substation layoutsDiagonal busbar arrangementsRigid and flexible cable busbar connectionsHigh-ice and seismic regions
Sign in to see your price, availability and framework terms for 3DN3.
Horizon-3 pattern: this exact page gains commerce powers on sign-in — the URL never changes.
SIMULATED · ASK-AN-EXPERT PILOT DEMO
Ask an expert about 3DN3
15 minutes with the right switchgear specialist — question in, booked call out. No email archaeology.
Checking availability…
Specifications
Common ratings (per IEC; other values on request)
| Rated normal current | up to 5,000 A |
| Rated peak withstand current | up to 160 kA |
| Short-time withstand current | up to 63 kA |
| Short-circuit duration | 1 / 3 s |
| Icing class | 10 / 20 mm |
| Ambient temperature range | -55 … +55 °C |
| Operation | Motor or manual; control voltages as for 3DN1 |
| Maintenance | 25 years |
Insulation levels (example rows from the ratings table)
| 123 kV — power-frequency / lightning impulse withstand (to earth) | 230 kV / 550 kV |
| 145 kV — power-frequency / lightning impulse withstand (to earth) | 275 kV / 650 kV |
| 170 kV — power-frequency / lightning impulse withstand (to earth) | 325 kV / 750 kV |
Documents & downloads
Brochure Disconnectors and Earthing Switches — High-Voltage Portfolio (3DN0–3DN9, 3DV motor drives)
Brochure Disconnectors and earthing switches — Siemens Energy Brazil brochure (current online edition)
Related products
3DN Centre/double-side break disconnector 3DN1/3DN2, 40.5–550 kV, up to 5,000 A / 63 kA, motor or manual drive
40.5 – 550 kV · Up to 4,000 A (3DN1) / 5,000 A (3DN2), 63 kA 1 s/3 s · Centre break (2-column) / double-side break (3-column) Datasheet · Dimensions ↓ 3DN0/4/6/7/8Disconnectors and earthing switches 3DN0/4/6/7/8, 40.5 kV up to 550 kV, rated normal current up to 5000 A, short-time withstand up to 63 kA, motor or manual operation
40.5 kV up to 550 kV across earthing-switch and disconnector variants · Rated normal current up to 5000 A (3DN4), short-time withstand up to 63 kA · Spring-free AgC contact system, 25-year maintenance interval Datasheet · Dimensions ↓
3DN5