The 51304730-125 (also written as 51304730125) is an 8‑channel Galvanically Isolated High‑Level Analog Input FTA (Field Terminal Assembly) for Honeywell TDC 3000, TPS, UCN, and Experion PKS DCS. It provides signal conditioning, 1500 VAC isolation, and 24 VDC loop power for 4–20 mA and 0–10 V transmitters. Designed for clean environments, it features non‑coated PCB and standard screw terminals.

51304730-125 is Honeywell’s official part number. 5130 indicates TDC 3000/UCN series; 4730 stands for High‑Level Analog Input FTA; 125 denotes 8‑channel, non‑coated, screw terminals with auxiliary power. It is also known as MU‑GAIH14 (GI/IS FTA Aux & Hi V Out).

It has 8 differential analog input channels, supporting 4–20 mA (2‑wire/self‑powered), 0–5 V, 0–10 V, ±5 V, ±10 V signals. Isolation is 1500 VAC RMS between field and system. Terminals are gold‑plated screw type. Loop power is 24 VDC nominal, 28 VDC open‑circuit, ≤93 mA short‑circuit. Operating temperature: -20°C to +60°C; storage: -40°C to +70°C. Humidity: 5%–95% non‑condensing. PCB is non‑coated. Certifications include CE, UL, CSA, RoHS. Form Factor Size B, weight approx. 1.5 kg.

It connects to HLAI modules (e.g., MC‑PAIH03 / 51304754‑150) via ribbon cable. Field side has 8 differential pairs for analog signals plus 24 VDC aux power terminals. Full galvanic isolation blocks transients and ground loops. It is a passive FTA with no independent protocol; all data processing is handled by the connected HLAI module and DCS.

It provides 8‑channel high‑level signal termination for 4–20 mA/voltage transmitters. The 1500 VAC isolation protects DCS and reduces noise. It supplies 24 VDC power to 2‑wire transmitters. Internal filtering and surge protection ensure signal stability. Gold‑plated screw terminals resist vibration and ensure reliable connections. It is drop‑in compatible with TDC 3000/TPS/UCN/Experion PKS.

It applies to Honeywell TDC 3000, TPS, UCN, Experion PKS DCS. Used in oil/gas, chemical, power, pharmaceutical, pulp & paper industries. Connects pressure, flow, level, temperature transmitters with 4–20 mA or voltage outputs. Installed in control room cabinets and clean, dry, non‑corrosive panels.

Mount in standard DCS cabinet with space for wiring and cooling. Connect ribbon cable to HLAI module and ensure proper locking. Wire field devices with correct polarity and tighten terminals to proper torque. Power on DCS, check for faults, and verify signal accuracy before operation.

Keep environment clean, dry, and ventilated. Inspect terminals and cables quarterly; replace damaged parts promptly. Clean with dry cloth only—no liquids or abrasives. Store spares in anti‑static bags in cool, dry areas. Use anti‑static precautions during handling. Do not disassemble unauthorized。