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LRD226
Schneider LRD226 available at EU Automation. Get in touch today for a quick price.
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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 LRD226 is a TeSys Deca differential thermal overload relay designed to protect motors against overload and phase failure. It features an adjustable thermal protection range of 16–24 A, Class 10A tripping, and temperature compensation from -20 to 60°C. Compatible with LC1D25, LC1D32, and LC1D38 contactors, the relay includes one normally open and one normally closed auxiliary contact, plus dedicated stop and reset push buttons. Its compact IP20 enclosure supports installation beneath a contactor or mounting on a plate or rail with suitable accessories.
| Specification | Description |
|---|---|
| Manufacturer | Schneider Electric |
| Part Number | LRD226 |
| Product Range | TeSys Deca |
| Product Type | Differential thermal overload relay |
| Application | Motor overload and phase-loss protection |
| Thermal Adjustment Range | 16–24 A |
| Trip Class | Class 10A per IEC 60947-4-1 |
| Compatible Contactors | LC1D25, LC1D32, and LC1D38 |
| Network Type | AC or DC |
| Network Frequency | 0–400 Hz |
| Rated Operational Voltage | Up to 690 V AC |
| Rated Insulation Voltage | 690 V per IEC; 600 V per UL and CSA |
| Rated Impulse Withstand Voltage | 6 kV |
| Tripping Threshold | 1.14 ± 0.06 times the selected current setting |
| Phase-Failure Sensitivity | Trips at 130% of the current setting on two energized phases with the third phase at zero |
| Auxiliary Contacts | 1 normally open and 1 normally closed |
| Auxiliary Contact Thermal Current | 5 A |
| Signaling Circuit Rating | 1.5 A at 240 V AC-15; 0.1 A at 250 V DC-13 |
| Control Functions | Red stop push button and blue reset push button |
| Mounting Options | Directly beneath a compatible contactor; plate or rail mounting with suitable accessories |
| Power Connections | Ring-lug terminals with M4 fasteners |
| Control Connections | Screw-clamp terminals for 1–2.5 mm² flexible or solid conductors |
| Control Terminal Tightening Torque | 1.7 N·m |
| Power Terminal Tightening Torque | 2.3 N·m |
| Operating Temperature | -4 to 140°F (-20 to 60°C) without derating |
| Storage Temperature | -76 to 158°F (-60 to 70°C) |
| Degree of Protection | IP20 |
| Dimensions | 2.60 × 1.77 × 2.76 in (66 × 45 × 70 mm) |
| Net Weight | 0.27 lb (0.124 kg) |
| Applicable Standards | IEC/EN 60947-4-1, IEC/EN 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, and EN 50495 |
| Compliance | EU RoHS compliant, REACH SVHC-free, mercury-free, and WEEE regulated |
| Country of Origin | France |
What type of device is this?
This is a TeSys Deca differential thermal overload relay designed to protect electric motors against overload conditions and phase failure.
What is the adjustable current range?
The thermal protection setting can be adjusted from 16 A to 24 A, allowing the relay to be matched to the motor's rated current.
What trip class does this overload relay use?
The relay has a Class 10A tripping characteristic in accordance with IEC 60947-4-1.
Which contactors are compatible with this relay?
The LRD226 is compatible with Schneider TeSys contactors including the LC1D25, LC1D32, and LC1D38.
Can this relay detect a phase failure?
Yes. It has phase-failure sensitivity and is designed to trip when an imbalance caused by a missing phase reaches the specified threshold.
What auxiliary contacts are included?
The relay includes one normally open contact and one normally closed contact for use in control and signaling circuits.
What controls are provided on the relay?
It has a red stop push button and a blue reset push button for local operation.
How can the relay be mounted?
It can be mounted directly beneath a compatible contactor. Plate and rail mounting are also possible when the appropriate accessories are used.
What are the operating temperature limits?
The relay operates without derating at ambient temperatures from -20°C to 60°C (-4°F to 140°F). Its specified storage temperature range is -60°C to 70°C (-76°F to 158°F).
What is the enclosure protection rating?
The device has an IP20 protection rating in accordance with IEC 60529.
What are the dimensions of the relay?
The unit measures approximately 66 mm high, 45 mm wide, and 70 mm deep.
How much does the relay weigh?
The net weight is approximately 0.124 kg, equivalent to about 0.27 lb.
What electrical networks can it be used with?
The relay is suitable for AC and DC networks, with a specified frequency range of 0 to 400 Hz.
What is the rated insulation voltage?
The power circuit has a rated insulation voltage of 690 V under IEC requirements and 600 V under UL and CSA requirements.
What terminal types are used?
The control circuit uses screw-clamp terminals that accept 1 to 2.5 mm² conductors. The power circuit uses M4 ring-lug terminals.
What tightening torque should be applied to the terminals?
The specified tightening torque is 1.7 N·m for the control-circuit screw-clamp terminals and 2.3 N·m for the M4 power-circuit ring-lug terminals.
Does the relay compensate for ambient temperature changes?
Yes. The LRD226 includes temperature compensation across its specified operating range to help maintain consistent overload protection.
Which standards does the relay conform to?
The relay conforms to applicable IEC, EN, UL, CSA, and GB/T standards for motor control and electromechanical control-circuit devices, including IEC 60947-4-1 and IEC 60947-5-1.
- Protecting three-phase motors against sustained overload conditions
- Detecting phase loss in industrial motor circuits
- Pairing with compatible TeSys Deca contactors in motor starters
- Controlling pumps, fans, compressors, and conveyors
- Protecting motors in machine tools and production equipment
- Supporting HVAC motor control applications
- Providing adjustable overload protection for motors rated from 16 to 24 A
- Integrating into industrial control panels and motor control centers
- Providing auxiliary trip signaling through normally open and normally closed contacts
- Supporting automatic machinery and material-handling systems
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.
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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!
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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.
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6 months ago
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