Product Overview
The Schneider Electric 140CPS42400C is a power supply module from the Modicon Quantum series, engineered for demanding industrial automation environments. It converts a 48–60 V DC input into a stable 5.1 V DC output, ensuring consistent power delivery to critical control systems. With a redundant output current of 8 A and internal overload and overvoltage protection, this module enhances system reliability and reduces unplanned downtime.

Technical Specifications Breakdown
Key parameters for the 140CPS42400C are listed below for quick reference:
| Feature | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Product Type | Power Supply Module |
| Product Line | Modicon Quantum |
| Part Number | 140CPS42400C |
| Input Voltage | 48–60 V DC |
| Output Voltage | 5.1 V DC |
| Output Current | 8 A redundant |
| Input Current | ≤ 3.8 A |
| Fuse Rating | 2 A time-lag |
| Hold-up Time | 13 ms @ 48 V |
| Inrush Current | 14 A @ 40 V |
| Alarm Output | 1 NC, 6 A @ 220 V |
| Power Dissipation | 17.2 W |
| Local Signaling | 1 green LED (PWR OK) |
| Marking | CE |
Industry Applications
This power supply module is ideal for continuous process industries such as water treatment, oil and gas, and manufacturing lines where stable DC power is critical. The 13 ms hold-up time at 48 V helps ride through brief power dips, preventing controller resets. Its 8 A redundant output supports fail-safe configurations in safety-critical systems, reducing operational risk.

Installation & Setup Guidance
Mount the module securely in a Modicon Quantum rack, ensuring proper grounding per local codes. Connect the 48–60 V DC input to the designated terminals, observing polarity. The green LED illuminates when output is within specification. Use the alarm output (1 NC contact rated 6 A @ 220 V) to signal power faults to a PLC or annunciator. Verify the 2 A time-lag fuse is correctly installed before energizing.
Maintenance & Reliability
Periodically inspect the module for dust accumulation and ensure ventilation openings are clear. Check the green LED status during routine rounds. The internal overload and overvoltage protection reduce the need for external components. Monitor power dissipation of 17.2 W to ensure ambient temperature stays within acceptable limits for the enclosure.
Compatibility & Integration
The 140CPS42400C integrates directly into Modicon Quantum backplanes, supporting standard I/O and processor modules. Its CE marking confirms compliance with European directives for industrial environments. No special configuration software is required for basic operation.
Selection Guide & Purchasing Advice
When selecting a replacement or new power supply, verify that your system requires 48–60 V DC input and 5.1 V DC output at up to 8 A redundant. The 140CPS42400C is a reliable choice for critical applications. Contact SpareTechPLC for current lifecycle status and availability before ordering.
Troubleshooting & Common Issues
If the green LED does not illuminate, check input voltage and fuse integrity. A tripped alarm output may indicate overload or overvoltage conditions; verify load current does not exceed 8 A. For persistent issues, consult the Schneider Electric documentation for the Modicon Quantum series.