Product Overview
Downtime on a Modicon Quantum rack rarely waits for a purchase order. The Schneider Electric 140CPS52400C is a redundant power supply module built for the Quantum automation platform, and it is the part engineers reach for when a 5.1 V DC rail must stay alive. With a nominal 125 V DC input and a 100–150 V DC operating window, it suits DC-fed control cabinets where input levels drift.
Technical Specifications That Matter
Wide DC Input Window
The 140CPS52400C accepts 100–150 V DC around a 125 V DC nominal. That headroom keeps the module running when upstream DC sources sag or spike, so you are not replacing fuses every shift.
8 A Redundant Output at 5.1 V DC
The module delivers 8 A of redundant output at 5.1 V DC. Redundant supply architecture means a second module can share the load, which is exactly what high-availability Quantum racks need.
Protection and Hold-Up
Internal overvoltage and overload protection sit inside the unit. A 2 A slow-blow fuse rating and a hold-up time of ≤ 1 ms cover brief input interruptions. Power dissipation follows 6 + (1.5 × Iout) W, so thermal planning stays predictable.
Signaling and Environment
A single green LED confirms PWR OK at a glance. The module carries CE marking and conformal coating (Humiseal 1A33), and it operates from 0…60 °C with 95 % relative humidity without condensation.
Comparison: 140CPS52400C vs. Typical Quantum Supply Options
| Feature | 140CPS52400C | Typical AC-input Quantum supply |
|---|---|---|
| Input | 125 V DC (100–150 V DC) | AC mains input |
| Output | 5.1 V DC, 8 A redundant | 5.1 V DC, non-redundant |
| Hold-up | ≤ 1 ms | Varies by model |
| Protection | Internal overload + overvoltage | Varies by model |
If your cabinet already runs on DC, the 140CPS52400C removes the need for a separate AC feed and keeps the rail redundant.
Where It Fits
In oil and gas skids, DC-powered Quantum racks often sit far from clean AC. The 140CPS52400C handles that environment. In water treatment and pipeline control rooms, the redundant 8 A output keeps I/O alive through brownouts. For retrofit projects, it drops into existing Quantum backplanes as a direct power module replacement.
Selection Checklist
Before ordering, confirm your rack uses the Modicon Quantum platform, your supply is 125 V DC nominal, and your load stays within 8 A at 5.1 V DC. Verify fuse and wiring ratings against your panel drawings. Oil AutoTech offers hands-on technical selection help and fast dispatch, worldwide, so you can match the right module the first time.
Please verify current lifecycle status and availability with Oil AutoTech before ordering.
