The Schneider Electric VW3A68502 is a 3-phase line choke (line reactor) from the Altivar range, designed to reduce current harmonics on the mains side of a variable-frequency drive. Thermal losses run 220 W, so panel ventilation needs to handle that heat — the choke itself is IP00 (the terminals are IP20), meaning it's an open-frame component intended for enclosure mounting.
Sizing and derating — what the ratings mean
The 195 A rated current is the continuous thermal limit at 45 °C ambient without derating. Above 45 °C up to 55 °C, derate by 2 % per °C. At altitude above 1000 m up to 3000 m, derate 1 % per 100 m.
Standards and environmental fit
The choke complies with VDE 0160 level 1, IEC 60076 (with HD398), and EN 50178. Pollution degree 2 per EN 50178, clearance distance 5.5 mm, creepage 11.5 mm per IEC 60664. Class F insulation (155 °C thermal class). Environmental classification 3B1/3C2/3S1 per IEC 721-3-3 — suitable for controlled indoor environments with moderate humidity (0–95 % RH). Shock resistance 15 gn for 11 ms, vibration 1 gn at 13–200 Hz and 1.5 mm peak-to-peak at 3–13 Hz. Electrical connection via terminals accepting 6 mm² / AWG 8, torque 0.8–1.0 N·m.