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OT63F3

The ABB OT63F3 is a 63-ampere, three-pole, fusible load break switch or switch-disconnector-fuse combination unit. It belongs to ABB's OT/OST series of modular switch-fuse devices, designed to provide a compact, integrated solution for circuit isolation, switching, and overcurrent protection

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Parameter Specification Product Series OT / OST Series (Switch-Disconnector-Fuse Combination Unit) Device Type 3-Pole Fusible Load Break Switch / Switch-Disconnector Rated Operational Current (Ie) 63 A (This is the current rating of the switch mechanism itself) Rated Fuse Current Up to 63 A (Must be fitted with fuses of equal or lower rating, e.g., 50A, 63A gG/gL or aM types) Number of Poles 3 Poles (3P) Rated Operational Voltage (Ue) 400 V AC (3-phase) / 690 V AC Utilization Category AC-22B or AC-23B (For switching mixed or motor loads with fuse protection) Rated Making & Breaking Capacity Depends on fuse type. With correct fuses, can achieve very high short-circuit breaking capacity (e.g., 100kA+ at 400V AC, determined by fuse). Switch Mechanical Endurance ≥ 10,000 operations Control Method Manual rotary operation via a detachable handle. Handle can typically be padlocked in the OFF position. Mounting 35 mm symmetrical DIN rail (EN 60715) Width 54 mm (3 standard modules, each 18mm) Terminal Type Screw clamp terminals for line/load and fuse connection. Connection Capacity Typically up to 35 mm² (for 63A model) Protection Degree IP00 (must be installed inside an enclosure). Front operation area with handle mounted achieves higher IP rating. Standards Compliance IEC/EN 60947-1, IEC/EN 60947-3 (Switch-disconnector part) Ambient Temperature (Operation) -25°C to +60°C