Why the 140DAI35300C Belongs in Your Control Cabinet
When a discrete input module fails, your entire line goes blind. The 140DAI35300C from Schneider Electric solves that problem with 32 input channels packed into a single Modicon Quantum slot. This module captures field signals from pushbuttons, limit switches, and proximity sensors across your process. For oil, gas, and industrial automation teams, that density means fewer modules, less wiring, and faster commissioning.
What 32 Channels Actually Deliver
Thirty-two inputs on one card changes how you design a panel. Instead of stacking multiple 16-channel modules, you free up rack space and reduce backplane traffic. The 140DAI35300C needs just 2 input words for addressing, so your PLC scan stays lean even with heavy I/O counts. Each channel draws 11.1 to 13.2 mA at 24 V AC nominal, giving you a predictable load profile when sizing your power budget.
Key Parameters at a Glance
| Specification | Value |
|---|---|
| Input Channels | 32 |
| Input Voltage | 24 V AC |
| Input Current | 11.1 to 13.2 mA |
| Max Leakage Current | 1.9 mA |
| Bus Current | 250 mA |
| Max Power Dissipation | 10.9 W |
| Addressing | 2 input words |
| Ambient Temperature | 0 to 60 °C |
| Weight | 0.34 kg |
Built for Real Plant Conditions
The 140DAI35300C operates from 0 to 60 °C, which covers most control rooms and many field enclosures. Its 10.9 W maximum power dissipation keeps heat buildup low, extending the life of nearby components. The 1.9 mA maximum leakage current matters in applications with long cable runs or sensitive sensor circuits, where stray current can cause false triggers. This module carries CE marking and meets UL 508 and CSA standards, so it fits into North American and European panel builds without extra qualification work.
Where This Module Earns Its Keep
In oil and gas terminals, the 140DAI35300C monitors valve position feedback and pump status across 32 points from one slot. Water treatment plants use it to read float switches and flow sensors along a process train. For packaging lines, the channel density lets you centralize photo-eye and encoder inputs without expanding the rack. If you are replacing a failed input card, matching the exact Modicon Quantum part number keeps your wiring and addressing intact.
Integration and Selection Advice
The 140DAI35300C drops into existing Modicon Quantum racks and communicates over the Quantum backplane. Before ordering, confirm your rack has available slots and that your power supply can absorb the 250 mA bus current. Check that your field devices output 24 V AC, since this is an AC input module, not DC. If you run mixed AC and DC signals, keep them on separate modules to avoid confusion during troubleshooting.
Oil AutoTech stocks the 140DAI35300C for fast dispatch, worldwide. Our team helps you verify compatibility with your existing Quantum configuration before you commit. Contact Oil AutoTech today for pricing and availability.
