Specifications General Product Type: Manual Changeover Switch / Selector Switch Series / Model: WNTS40/4AV Number of Poles: 4 (three phases + neutral) Rated Current: 40 A Utilization Categories: AC‑33A: General switching of resistive or light inductive loads AC‑33B: Switching of mixed motor and general loads Mounting: Panel mounting with front‑operated handle Electrical Ratings Rated Operational Voltage (Ue): Suitable for low‑voltage AC systems (e.g., 230/400 V AC three‑phase) Rated Frequency: 50/60 Hz Rated Insulation Voltage (Ui): Appropriate for low‑voltage distribution environments Rated Impulse Withstand Voltage (Uimp): Designed to withstand transient voltages typical in distribution systems Switching & Performance Switch Type: Manual rotary handle changeover Contact Configuration: Four‑pole isolation and switching of all phases plus neutral Make/Break Capability: Engineered for frequent manual operation and switching of typical loads Contact Material / Durability: Designed for reliable electrical contact over repeated cycles Mechanical & Environmental Handle Operation: Front‑mounted handle with clear position indication Mechanical Durability: Built for repeated mechanical operations Terminal Connections: Screw/clamp type terminals for secure conductor connection Installation: Designed for integration into distribution panels and control cabinets Operating Environment: Indoor electrical distribution settings