steve
Got hold of Sime for a Carrier card for…
Got hold of Sime for a Carrier card for a chiller. Machine down in a factory. Received the new card in express time machine and plant now up and running fantastic service form Sime
3 months ago
LRD21
Schneider LRD21 available at EU Automation. Get in touch today for a quick price.
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Full 12-month warranty
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What happens next?
1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
The Schneider LRD21 is a differential thermal overload relay designed for motor protection applications. With a thermal protection adjustment range of 12-18A, this reliable and robust relay is compatible with LC1D18, LC1D25, LC1D32, and LC1D38 contactors. The LRD21 operates with both AC and DC networks and features a Class 10A thermal overload class, conforming to IEC 60947-4-1 standards. Its compact design measures 66mm in height, 45mm in width, and 70mm in depth, making it suitable for various installation environments. The relay offers a temperature compensation range of -20°C to 60°C and is equipped with a red push-button for stopping and a blue push-button for resetting. With an IP20 degree of protection and flame retardance of V1 conforming to UL 94, the LRD21 ensures safe and efficient operation in various industrial settings. This Green Premium product is compliant with REACh, RoHS, and other environmental regulations, making it a sustainable choice for your motor protection needs.
| Specification | Description |
|---|---|
| Part Number | LRD21 |
| Manufacturer | Schneider |
| Dimensions (H x W x D) | 66 mm x 45 mm x 70 mm |
| Net Weight | 0.124 kg |
| IP Degree of Protection | IP20 (conforming to IEC 60529) |
| Ambient Temperature (Operation) | -20°C to 60°C (conforming to IEC 60947-4-1) |
| Ambient Temperature (Storage) | -60°C to 70°C |
| Flame Retardance | V1 (conforming to UL 94) |
| Dielectric Strength | 1.89 kV at 50 Hz (conforming to IEC 60947-1) |
| Standards | EN/IEC 60947-4-1, EN/IEC 60947-5-1, UL 60947-4-1, UL 60947-5-1, CSA C22.2 No 60947-4-1, CSA C22.2 No 60947-5-1, GB/T 14048.4, GB/T 14048.5, EN 50495 |
| Product Certifications | IEC, UL, CSA, CCC, EAC, BV, RINA, DNV-GL, LR, ATEX, INERIS, UKCA |
| REACh Regulation | REACh Declaration |
| EU RoHS Directive | Compliant |
| EU RoHS Declaration | Yes |
| Mercury Free | Yes |
| China RoHS Regulation | China RoHS Declaration |
| RoHS Exemption Information | Yes |
| Environmental Disclosure | Product Environmental Profile |
| Circularity Profile | End of Life Information |
| WEEE | Must be disposed on European Union markets following specific waste collection and never end up in rubbish bins |
What is the function of this thermal overload relay?
The Schneider LRD21 is a thermal overload relay designed to protect motors from overheating. It does this by monitoring the current flowing through the motor. If the current exceeds a preset limit, the relay will trip and disconnect the motor from the power supply, preventing potential damage.
What are the key specifications of this part?
The Schneider LRD21 has a thermal protection adjustment range of 12 to 18A. It operates with a network frequency of 0 to 400 Hz and has a rated operational voltage of 690 V AC. It also features a phase failure sensitivity, tripping current 130% of Ir on two phases.
What are the physical dimensions of this part?
The Schneider LRD21 has a height of 66mm, a width of 45mm, and a depth of 70mm.
What is the operating temperature range for this part?
The Schneider LRD21 can operate effectively in ambient air temperatures ranging from -20 to 60 degrees Celsius without derating.
What certifications does this part have?
The Schneider LRD21 is certified by several standards including IEC, UL, CSA, CCC, EAC, BV, RINA, DNV-GL, LR, ATEX, INERIS, and UKCA.
What is the environmental impact of this part?
The Schneider LRD21 is a Green Premium product. It complies with the REACh and EU RoHS directives, and is mercury-free. It also has a Product Environmental Profile and an End Of Life Information.
What is the installation process for this part?
The Schneider LRD21 can be mounted on a plate with specific accessories, under a contactor, or on a rail with specific accessories. It features screw clamp terminals for both control and power circuits.
- Motor protection in industrial applications
- Overload protection for electric motors
- Thermal protection in motor control systems
- Integration with TeSys contactors for motor starters
- Use in control panels for machinery and equipment
- HVAC system motor protection
- Pump and compressor motor protection
- Conveyor system motor protection
- Protection of motors in manufacturing and processing plants
This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
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Customer reviews
steve
Daniel
Excellent customer service...
Alex Bailey is my main point of contact at EU Automation...he is extremely friendly, has exceptional customer service skills and always offers great pricing & lead times.
5 months ago
Jerry Schrink
Tom Higgins provided amazing service
Tom Higgins provided great prompt service. I contacted Tom by phone and within 10 minutes there was a quote in my in box. WOW Thank you Tom and Thank you EU Automation!
5 months ago
Paulo Pereira
Excellent service and communication…
Excellent service and communication from Alex Bailey. He truly goes above and beyond to ensure his clients are 100% satisfied. The entire process was seamless, and his attention to detail made a huge difference. Highly recommended for anyone looking for amazing service!
5 months ago
Gary
Tom Higgins did a great job at getting…
Tom Higgins did a great job at getting us the part we needed. He saw a concern with the part a verified before shipping.
6 months ago
Lessle Smith
Thomas Higgins has gone above and…
Thomas Higgins has gone above and beyond to make things happen for my facility. His customer service and knowledge were an asset in helping me with my order and the logistics challenges!
6 months ago
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