Model Number Explanation

AS: Modicon Automation System component

9000: High‑end 9000 series platform

451: Main power supply, 115V AC input, high‑power rating

Technical Specifications

Input Voltage: 115V AC (50/60 Hz)

Output: Regulated +5V DC, ±15V DC (backplane & I/O)

Power Rating: High‑capacity (sustained ~150W, peak ~250W)

Max Load: Supports full 9000/984 rack (CPU + 8–12 I/O modules)

Protection: Overvoltage, overcurrent, short‑circuit, thermal shutdown

Operating Temperature: 0°C to +60°C

Storage Temperature: −40°C to +85°C

Humidity: 5%–95% non‑condensing

Dimensions: ≈483 × 133 × 356 mm

Weight: ≈6.28 kg (13.85 lbs)

Certifications: CE, UL 508, CSA

Interface & Configuration

Backplane Connection: 9000/984 series high‑current backplane connector

Input Terminal: 115V AC screw terminal block

Status Indicators: PWR (OK), FAULT (overload/overtemp) LEDs

Mounting: Rack‑mount (leftmost slot of 9000/984 series rack)

Key Features

High Power Output: Powers full‑size 9000/984 racks with multiple CPUs and I/O

Robust Protection: Comprehensive fault protection for industrial environments

Hot‑Swap Capable: Can be replaced without system shutdown (redundant setups)

Built‑in Diagnostics: LED status for quick troubleshooting

Legacy Compatibility: Fits Modicon 9000, 984, and 884A series racks

Applications

Systems: Modicon 9000, 984, 884A series PLC systems

Industries: Process automation, power generation, oil & gas, water treatment, large manufacturing

Use Cases: Large control rooms, distributed I/O systems, redundant PLC setups, legacy system upgrades

Compatibility

Racks: Modicon 9000 series racks, 984 series backplanes, 884A series chassis

CPUs: AS-884A series, AS-9000 series processors

I/O Modules: Modicon 800/984 series digital/analog I/O

Status

Discontinued: Obsolete, no longer manufactured by Schneider Electric

Availability: Only refurbished/used units on the market (e.g., Radwell, Santa Clara Systems)