What Is the 140CRA21100C?
The 140CRA21100C is a Schneider Electric I/O module built for the Modicon Quantum platform. It runs on AC voltage and slots into control architectures that drive material handling, packaging, textile machinery, and general control tasks. If your line is down and you need a practical replacement, this module keeps production moving without a full platform overhaul.

Key Parameters and What They Mean for Uptime
Every spec on this module ties back to cost and efficiency. The table below breaks down the numbers that matter most when you are planning a swap or a spares holding.
| Specification | Value |
|---|---|
| Manufacturer | Schneider Electric |
| Product Type | I/O Module |
| Product Line | Modicon Quantum |
| Part Number | 140CRA21100C |
| Voltage Type | AC |
| Operating Temperature | 0 to 40 degrees Celsius |
| Storage Temperature | 0 to 50 degrees Celsius |
| Maximum Operating Humidity | 80% RH, non-condensing |
| Maximum Storage Humidity | 80% RH, non-condensing |
| Maximum Operating Altitude | 1000m above sea level |
| Maximum Storage Altitude | 1000m above sea level |
Why AC Voltage Matters
AC voltage keeps integration simple in plants already running AC control circuits. You avoid extra conversion hardware, which trims installation cost and reduces the number of failure points on the panel.
Temperature and Humidity Limits
The 0 to 40 degrees Celsius operating range suits climate-controlled cabinets and typical production floors. Storage up to 50 degrees Celsius gives you flexibility in non-conditioned warehouses. The 80% RH non-condensing ceiling means you should keep moisture management in place, especially in humid process areas.
Altitude Rating
At 1000m above sea level maximum, the module fits most inland industrial sites. If your facility sits higher, verify the derating practice with your integrator before commissioning.
Where the 140CRA21100C Fits
Material Handling
Conveyor and sortation systems rely on steady I/O to keep pallets moving. A failed module stalls the whole line, and every minute of downtime carries a cost. Keeping a ready-to-ship spare on the shelf protects throughput.
Packaging and Textile Machinery
Packaging lines and textile machines run long shifts with tight cycle times. The AC voltage design and broad application support make this module a practical fit for both, letting you standardize spares across departments and cut inventory spend.
General Control Applications
Beyond dedicated machinery, the module supports broader control tasks. That versatility means one part number can cover multiple assets, simplifying your spares strategy and reducing the number of unique SKUs you need to stock.

Compatibility and Integration
The 140CRA21100C belongs to the Modicon Quantum series, so it drops into existing Quantum racks without a redesign. Confirm your backplane, slot assignment, and terminal wiring against the original drawing before you swap. If your architecture routes through a fieldbus network, wiring may require an external gateway or connection module — check cables and gateways with your supplier first.
Maintenance and Cost Control
Inspect the module and its connections on a regular schedule. Look for loose terminals, dust buildup, and cabinet temperature drift above the 40 degrees Celsius ceiling. Humidity above 80% RH non-condensing can shorten service life, so keep cabinet seals and any dehumidification working.
Holding one spare on site usually costs far less than an emergency freight premium and lost production. That is the practical math behind keeping critical Quantum modules ready-to-ship.
Selection Checklist
Before you order, confirm the part number, the Quantum rack slot, and the AC voltage requirement. Verify your cabinet stays within the 0 to 40 degrees Celsius operating range and 80% RH non-condensing limit. If you are unsure which revision fits your line, hands-on technical selection help is available. Contact Oil AutoTech today for pricing and availability.
Please verify current lifecycle status and availability with Oil AutoTech before ordering.
