The ABB SNAT 608CMT​ is a specialized Printed Circuit Board manufactured by ABB, designed to function as the intelligent interface and tapping selector for a multi-tap control power transformer. It is a key component within motor starter and control circuit assemblies. This board provides a safe, organized, and configurable method to derive the correct low-voltage control power (typically 24VAC, 110VAC, or 120VAC) from a transformer with multiple input voltage taps, powering contactor coils, relays, and other control devices.

In a global manufacturing facility, a new production machine from Europe (400VAC) needs to be integrated into a North American plant (480VAC). The machine’s control panel contains contactors, PLCs, and sensors all designed to run on 110VAC control power, sourced from an internal multi-tap transformer. The ABB SNAT 608CMT​ board is mounted adjacent to this transformer. During commissioning, the technician uses the board’s clearly marked terminal blocks and jumper configuration options to select the correct input tap (e.g., connecting to the 480V tap instead of 400V). The board safely routes the primary voltage, and the transformer secondary then outputs the stable 110VAC required by the control circuit. Without this board, the task would require custom wiring, splicing, and potential safety hazards. The SNAT 608CMT​ provides a standardized, code-compliant, and error-proof method to adapt control circuit power to the local supply voltage, ensuring all motor starters and logic function correctly regardless of the main power input.