Schneider Electric TA1AD3L12H4TPE TransferPacT TA1A 3P 1250 A LCD 400 V Automatic Transfer Switch

The Schneider Electric TA1AD3L12H4TPE is a 3-pole TransferPacT automatic transfer switch rated 1250 A at 400 V AC, built to change the source of supply between two AC networks without interrupting a standby or life-safety load. It carries a lcd screen on the front for local status and control, and it is intended for uninterrupted-duty changeover in industrial, commercial and healthcare installations within the TA1A frame (800-1600 A).

Technical Specifications

Certifications & Standards

• CE
• CB
• CCC
• IEC 60947-6-1

Selection Notes

The 3-pole TA1AD3L12H4TPE switches only the phase conductors, so the neutral stays solidly connected between the two sources; pick this execution where both the normal and the standby supply share a common neutral-to-earth bond. Its LCD controller displays source status, the active contact position and alarms locally and is operated from the front push-buttons, which is useful where staff need to read the changeover state without opening the panel. At 1250 A this unit sits within the TA1A frame covering 800-1600 A, the top of the TransferPacT range, and carries the higher 1000 V (switch) insulation voltage and 50 kA during 0.5 s | 70 kA during 0.1 s short-time withstand rating that the smaller 160/250/630 A frames do not reach. The 50 kA during 0.5 s | 70 kA during 0.1 s short-time withstand current lets it be installed directly downstream of an upstream breaker sized to that let-through level, without extra current-limiting fuses, and the AC-33B, AC-33A utilization category confirms it for uninterrupted-duty source changeover.