Schneider Electric TA16D3S1254TPE TransferPacT 3P 125 A Rotary 400 V Automatic Transfer Switch

The Schneider Electric TA16D3S1254TPE is a 3-pole TransferPacT automatic transfer switch rated 125 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 rotary knob / selector switch on the front for local status and control, and it is intended for uninterrupted-duty changeover in industrial, commercial and healthcare installations within the 80-160 A frame.

Technical Specifications

Certifications & Standards

• CE
• CB
• CCC
• IEC 60947-6-1

Selection Notes

The 3-pole TA16D3S1254TPE 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 rotary knob / selector switch controller gives local automatic/manual control without a display, a simpler option for panels where remote diagnostics are not required and panel depth or cost is the deciding factor. Within the 80-160 A frame, this 125 A setting shares its enclosure footprint with the other current ratings built on the same frame, so the panel cut-out does not change if a different rating from the same frame is specified instead. The 10 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 utilization category confirms it for uninterrupted-duty source changeover.