Original ABB power supply module for S800 I/O station, converts AC to 24VDC for back‑plane I/O modules.

Product Overview

933‑7300 is ABB dedicated power supply module for S800 I/O station. It converts wide‑range AC input into stable isolated 24VDC power, distributes power to all I/O modules through station backplane. It provides electrical isolation between main power network and field I/O circuit, suppresses surge and common‑mode interference, guarantees stable operation of digital and analog I/O cards. Compact plug‑in structure, widely used as maintenance spare part for ABB DCS control cabinets in petrochemical, power plant and process industry.

Key Features

• Wide‑range 85‑264VAC input, adaptive for global industrial power grid
• Galvanic isolation between AC input and 24VDC output, protects sensitive I/O circuits
• Distributes power via station backplane for S800 series I/O modules
• Built‑in multiple protection: over‑voltage, over‑current, short‑circuit and over‑temperature protection
• LED status indicators for power‑on and fault alarm diagnosis

• Plug‑in station‑mount design, convenient for on‑site replacement

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Technical Specifications

• Brand: ABB
• Model: 933‑7300
• Module Type: S800 I/O Station Power Supply Module
• Input: 85‑264VAC, 50/60Hz
• Output: Isolated 24VDC
• Isolation: High‑voltage galvanic isolation between input and output
• Operating Temp: 0℃ ~ +60℃
• Storage Temp: ‑40℃ ~ +85℃
• Humidity: 5‑95% non‑condensing

• Installation: Plug‑in inside S800 I/O station rack

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Compatibility

Compatible with ABB S800 I/O station hardware. Power‑on inspection and backplane power distribution test required after replacement.