Power Distribution

Vekloud STS 3/3 Phase 4P 32-63A

Technology: STS conversion time ≤ 4ms
Power rating: 32，40 & 63 A Models Available
Phase: 3/3 Phase (380V-415V)
Warranty: 1 Year Full Warranty
Description: A 3U 19-inch, three-phase 4-pole static transfer switch that provides A/B source redundancy for critical loads, using SCR-based static switching to transfer in milliseconds (typically ≤ 4 ms) when the preferred source becomes abnormal. It supports automatic S1-priority operation with auto-return, manual transfer, terminal-block wiring, and high efficiency for reliable rack deployments.
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Purpose: Automatic A/B power-source selection for critical loads. Under normal conditions the load is supplied by Source S1; if S1 becomes abnormal, the load transfers to Source S2 without interruption to the load supply.
Switching technology: SCR (thyristor) static switching modules for millisecond, contactless transfer.
Transfer performance: Typical transfer time ≤ 4 ms; supports transfer on power-loss conditions.
Priority logic: S1 priority by default—auto transfer to S2 on S1 fault, and auto return to S1 when S1 recovers. Manual priority transfer via front-panel button is supported when both sources are healthy.
Electrical ratings: Three-phase 380 V ±15%, 50/60 Hz; input and output both 380 V class.
Current ratings / options: 32A / 40A / 63A, 4-pole (4P).
Transfer modes: Automatic / Manual, break-before-make.
Sync requirement: Supports transfer under synchronous or non-synchronous source conditions (as specified).
Connections: Terminal-block inputs and output (three-phase).
Performance: Crest factor 3:1, efficiency ≥ 98%.
Cooling & environment: Forced-air cooling; 0–40°C, 0–90% RH (non-condensing); altitude up to <5000 m.
Rack / mechanical: 3U 19-inch, size 440 × 490 × 132 mm (D×W×H), weight ~12 kg.