CHANGEOVER 63A ONLOAD (HAVELLS)

The HAVELLS 63A Onload Changeover Switch (Enclosed) is a heavy-duty, industrial-grade manual transfer switch designed to safely switch an entire electrical system between two separate power sources under load conditions. Description The Havells 63A Onload Changeover Switch features a compact, high-grade powder-coated sheet steel (CRCA) enclosure with an embossed Havells logo. The face plate houses a prominent, ergonomic black manual operating handle complete with a clear directional arrow indicating position states. Unlike off-load switches that require upstream isolation, this onload-rated mechanism is engineered with quick-make, quick-break contacts and integrated arc-chutes. This allows it to safely interrupt and transfer currents even while active loads are connected, preventing dangerous electrical arcing. The 3-position front faceplate clearly outlines the operations: Position I: Main Grid Line (Active utility power). Position O: Neutral Off (Complete system isolation for maintenance). Position II: Alternate Source (Standby generator line or solar array input). Technical Specifications Parameter Specification Details Brand Havells Type Manual Changeover Switch (Onload Execution) Current Rating 63 A Operational Modes 3 Positions (I - O - II) Pole Configurations Standard TPN (Triple Pole & Neutral) or Four Pole (FP) Enclosure Material Heavy-gauge Cold Rolled Close Annealed (CRCA) Steel Box Utilization Category AC-22A / AC-23A (Heavy inductive and mixed motor load switching) Rated Operational Voltage 415V AC (Suitable for 3-Phase electrical systems) IP Enclosure Protection IP43 (Protected against solid tools >1mm and spraying rain moisture) Standards Compliance IS/IEC 60947-3 Certified  Application and Best Uses The 63A onload current capacity makes this manual transfer enclosure a fundamental safety component for commercial spaces and larger residential properties. Mains-to-Generator Power Transfer: Safely transitions an entire home, mid-sized retail store, or office building from a standard municipal power failure over to a standby diesel or petrol generator grid. Emergency Down-line Isolation: The middle "O" mechanical stop breaks connection across all phase poles and neutral terminals simultaneously. This allows technicians to repair downstream sub-panels without back-feed risks. Dual Utility Alternative Feeds: Frequently installed in light industrial workshops or server facilities to switch primary equipment operations between two separate municipal service inputs or solar battery storage banks. Â