Industrial PC-146 Dual Isolator Circuit Board

PC-146 Dual Isolator Circuit Board is a two-channel isolation module designed to electrically separate input and output signals in industrial control systems. The board uses screw-terminal connections for field wiring and is described in listings as supporting a 4–20 mA input with a 0–5 VDC output, providing galvanic isolation between the process loop and control electronics. Originally manufactured by Eaton/Dynapower as part of their isolation modules, the PC-146 appears in surplus and repair listings often branded as Rapid Power Tech, with revision codes such as AD202JY appearing in third‑party references. The part is noted as discontinued by the original manufacturer. Typical applications include interfacing analog sensors or transmitter loops to PLCs or SCADA systems while protecting instrumentation and mitigating ground loops in harsh industrial environments. This dual-isolator PCB consolidates two independent isolation channels in a single board and uses screw terminals to simplify wiring in control cabinets and panels.