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LRD083
Schneider LRD083 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 LRD083 is a TeSys Deca differential thermal overload relay designed to protect motors against overload and phase failure. It offers an adjustable thermal protection range of 2.5–4 A and Class 10A tripping performance in accordance with IEC 60947-4-1. Compatible with selected LC1D contactors, it can be mounted directly beneath a contactor or installed on a plate or rail using suitable accessories.
The relay supports AC and DC networks with frequencies up to 400 Hz and features one normally open and one normally closed auxiliary contact. Spring terminals provide secure connections, while dedicated stop and reset push-buttons enable straightforward operation. Temperature compensation from -20°C to 60°C helps maintain dependable performance across varied industrial environments. With an IP20 enclosure rating and a compact 45 mm-wide design, the LRD083 is well suited to motor control panels, machinery and industrial automation systems.
The relay supports AC and DC networks with frequencies up to 400 Hz and features one normally open and one normally closed auxiliary contact. Spring terminals provide secure connections, while dedicated stop and reset push-buttons enable straightforward operation. Temperature compensation from -20°C to 60°C helps maintain dependable performance across varied industrial environments. With an IP20 enclosure rating and a compact 45 mm-wide design, the LRD083 is well suited to motor control panels, machinery and industrial automation systems.
| Specification | Description |
|---|---|
| Manufacturer | Schneider Electric |
| Part Number | LRD083 |
| Product Range | TeSys Deca |
| Product Type | Differential thermal overload relay |
| Application | Motor overload and phase-failure protection |
| Adjustment Range | 2.5–4 A |
| Trip Class | Class 10A, conforming to IEC 60947-4-1 |
| Compatible Contactors | LC1D09, LC1D12, LC1D18, LC1D25, LC1D32 and LC1D38 |
| Network Type | AC and DC |
| Network Frequency | 0–400 Hz |
| Rated Operational Voltage | 690 V AC, 0–400 Hz, for the power circuit |
| Rated Insulation Voltage | 690 V to IEC 60947-4-1; 600 V to UL and CSA |
| Rated Impulse Withstand Voltage | 6 kV |
| Trip Threshold | 1.14 ± 0.06 × Ir |
| Phase-Failure Sensitivity | Trips at 130% of Ir on two phases when the third phase is at zero |
| Auxiliary Contacts | 1 normally open and 1 normally closed |
| Conventional Free-Air Thermal Current | 5 A for the signalling circuit |
| Permissible Signalling Current | 3 A at 120 V AC-15; 0.22 A at 125 V DC-13 |
| Associated Fuse Rating | 4 A gG or 4 A BS for the signalling circuit |
| Controls | Red stop push-button and blue reset push-button |
| Terminal Type | Spring terminals |
| Control Circuit Connections | One 1–2.5 mm² solid or flexible conductor without cable end |
| Power Circuit Connections | One 1.5–4 mm² flexible conductor, with or without cable end |
| Mounting | Directly beneath a compatible contactor; plate or rail mounting with suitable accessories |
| Degree of Protection | IP20 to IEC 60529 |
| Operating Temperature | −20 to 60 °C without derating |
| Storage Temperature | −60 to 70 °C |
| Temperature Compensation | −20 to 60 °C |
| Flame Retardance | UL 94 V-1 |
| Vibration Resistance | 6 Gn to IEC 60068-2-6 |
| Shock Resistance | 15 Gn for 11 ms to IEC 60068-2-7 |
| Dielectric Strength | 1.89 kV at 50 Hz to IEC 60947-1 |
| Dimensions | 93 mm high × 45 mm wide × 72 mm deep |
| Net Weight | 0.14 kg |
| Key Standards | EN/IEC 60947-4-1, EN/IEC 60947-5-1, UL 60947-4-1, UL 60947-5-1 and EN 50495 |
| Certifications | IEC, UL, CSA, CCC, EAC, BV, RINA, DNV-GL, Lloyd’s Register, ATEX INERIS and UKCA |
What type of component is this?
The LRD083 is a TeSys Deca differential thermal overload relay designed to protect electric motors against sustained overloads and phase failure.
What is the adjustable current range?
The thermal protection setting can be adjusted from 2.5 A to 4 A, allowing it to be matched to the motor's rated current.
What is the thermal overload trip class?
This relay has a Class 10A trip characteristic in accordance with IEC 60947-4-1.
Which contactors are compatible with this relay?
It is compatible with Schneider TeSys contactor models LC1D09, LC1D12, LC1D18, LC1D25, LC1D32 and LC1D38.
Can it be used with both AC and DC systems?
Yes. The relay is specified for use with both AC and DC network types, with an operating frequency range of 0 to 400 Hz.
What auxiliary contacts are included?
The relay includes one normally open contact and one normally closed contact, identified as a 1 NO + 1 NC auxiliary contact arrangement.
How is the relay reset after it trips?
A blue reset push-button is provided on the unit. It also has a red stop push-button for manual operation.
Does it detect phase failure?
Yes. The LRD083 has phase-failure sensitivity and is specified to trip at 130% of the current setting on two phases when the remaining phase is at zero.
What type of terminals does it use?
It uses spring terminals. The control circuit accepts one solid or flexible conductor from 1 to 2.5 mm², while the power circuit accepts one flexible conductor from 1.5 to 4 mm².
What is the rated operational voltage?
The power circuit has a rated operational voltage of up to 690 V AC at frequencies from 0 to 400 Hz, in accordance with IEC 60947-4-1.
What operating temperature range is specified?
The relay is designed to operate from -20°C to 60°C without derating. Its specified storage temperature range is -60°C to 70°C.
What level of enclosure protection does it provide?
The component has an IP20 ingress protection rating in accordance with IEC 60529.
What are its physical dimensions?
The unit measures approximately 93 mm high, 45 mm wide and 72 mm deep, with a net weight of about 0.14 kg.
How can it be mounted?
It can be fitted directly beneath a compatible contactor. Plate and rail installation are also possible when the appropriate accessories are used.
Which standards does it conform to?
The relay is designed in accordance with relevant standards including EN/IEC 60947-4-1, EN/IEC 60947-5-1, UL 60947-4-1, UL 60947-5-1 and applicable CSA standards.
- Motor overload protection in industrial control panels
- Phase-loss protection for three-phase motors
- Starter assemblies using compatible TeSys Deca contactors
- Pumps, fans and compressor motor control systems
- Conveyor and material-handling equipment
- Machine tools and automated production machinery
- Heating, ventilation and air-conditioning equipment
- Process machinery requiring adjustable 2.5–4 A protection
- AC or DC motor circuits requiring Class 10A overload response
- Panel, rail or direct-under-contactor installations with suitable accessories
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
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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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