Schneider Electric 140CRA31908: Compact Control Relay for Industrial Automation

The Schneider Electric 140CRA31908 is a compact and reliable control relay designed to handle switching tasks in industrial automation systems. From my experience, this model stands out for its versatility and durability, making it a go-to choice for engineers who need dependable performance in demanding environments.

Key Features

• High Switching Capacity: Capable of handling up to 10A at 250V AC, this relay is ideal for controlling motors, solenoids, and other high-power devices.
• Plug-in Design: The modular plug-in design simplifies installation and replacement, saving time during maintenance or upgrades.
• LED Indicators: Integrated LEDs provide clear status indication, helping operators quickly identify faults or operational states.
• Wide Operating Temperature Range: Designed to function reliably between -40°C and +70°C, ensuring consistent performance even in extreme conditions.

Technical Specifications

Application Fields

This relay finds extensive use in industries such as manufacturing, packaging, and material handling. For example, it’s commonly deployed in conveyor systems to manage motor start-stop operations. You might also notice that its robust build makes it suitable for HVAC applications where reliability under fluctuating temperatures is critical.

Advantages & Value

One thing I appreciate about the 140CRA31908 is how it balances cost-effectiveness with performance. In most cases, customers find that its compatibility with existing Allen-Bradley systems reduces integration headaches. Additionally, the plug-and-play nature minimizes downtime during replacements, which translates to tangible cost savings over time.

Installation & Maintenance

For optimal performance, ensure the relay is installed in a well-ventilated cabinet with proper clearance around it. Wiring should comply with local electrical codes, and terminals must be securely tightened. Routine maintenance includes periodic checks for loose connections and visual inspections for signs of overheating. Firmware updates aren’t applicable here since it’s a purely electromechanical device.

Quality & Certifications

The 140CRA31908 comes with CE and UL certifications, guaranteeing compliance with international safety standards. It also meets RoHS requirements, ensuring environmentally responsible manufacturing practices. The manufacturer offers a standard one-year warranty, covering defects in materials and workmanship.