The Schneider Electric TA10D4S0634TPE is an automatic transfer switch (ATS) from the TransferPacT range, designed to change the source of supply between a normal and a backup power feed — typically a mains-to-generator or mains-to-mains transfer in a low-voltage distribution board. Rated 63 A continuous at 400 V AC 50/60 Hz across 4 poles (4P), it is classed as a PC transfer switch per IEC 60947-6-1, meaning it can make, carry, and break currents under normal and overload conditions but does not provide short-circuit protection — that is left to an upstream circuit breaker. The AC-33B utilization category confirms it handles mixed resistive and motor loads up to 63 A, which covers most lighting, heating, and small motor circuits in a commercial or light industrial backup scheme. Duty is uninterrupted (continuous), so no de-rating for extended run times — the switch stays closed on the preferred source indefinitely, only opening to transfer when the controller detects a loss or restoration of supply.
Short-circuit making capacity (Icm) is 15 kA peak at 400 V AC with the switch-disconnector alone, and 75 kA peak when an upstream circuit breaker coordinates — the breaker must be selected to limit let-through energy to protect the ATS. Rated short-time withstand current (Icw) is 5 kA for 0.1 s, which covers the time delay before the upstream breaker clears a fault — enough for a typical coordination study with a moulded-case breaker. Mechanical interlocking between the normal and standby contacts ensures both sources cannot be closed simultaneously, which is a safety requirement for paralleled supplies.
Connection pitch is 18 mm, and both upside and downside connections are screwed terminals — expect to terminate with ring or fork lugs for the 63 A rating. Control is via a rotary knob selector switch for Auto/Manual operation, and the switch includes a padlockable OFF position for lockout/tagout.