steve
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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
LRD3359
Schneider LRD3359 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 LRD3359 is a high-quality thermal overload relay designed to provide efficient motor protection. This component is part of the TeSys LRD series and is compatible with LC1D80 and LC1D95 contactors. It is engineered to safeguard AC and DC motors from overloads by offering a thermal protection adjustment range of 48 to 65 A.
Crafted for durability and reliability, the LRD3359 operates within a network frequency of 0 to 400 Hz and features a tripping threshold of 1.14 +/- 0.06 Ir in accordance with IEC 60947-4-1 standards. The device is equipped with both a normally open (NO) and a normally closed (NC) auxiliary contact, ensuring versatile integration into various control circuits.
The unit's robust construction includes a rated insulation voltage of 1000 V for the power circuit, conforming to IEC 60947-4-1, and 600 V for both CSA and UL standards. It also boasts an impressive rated impulse withstand voltage of 6 kV in line with IEC 60947-1, highlighting its capacity to handle transient overvoltages.
Installation is made straightforward with options for mounting support on a plate, rail, or directly under a contactor. The LRD3359 is designed with screw clamp terminals for secure and reliable connections, accommodating a range of cable sizes and types. It also features temperature compensation from -20 to 60 °C, ensuring consistent performance across various operating environments.
The Schneider LRD3359 is a testament to Schneider Electric's commitment to innovation, sustainability, and quality, making it an essential component for motor protection in industrial applications.
Crafted for durability and reliability, the LRD3359 operates within a network frequency of 0 to 400 Hz and features a tripping threshold of 1.14 +/- 0.06 Ir in accordance with IEC 60947-4-1 standards. The device is equipped with both a normally open (NO) and a normally closed (NC) auxiliary contact, ensuring versatile integration into various control circuits.
The unit's robust construction includes a rated insulation voltage of 1000 V for the power circuit, conforming to IEC 60947-4-1, and 600 V for both CSA and UL standards. It also boasts an impressive rated impulse withstand voltage of 6 kV in line with IEC 60947-1, highlighting its capacity to handle transient overvoltages.
Installation is made straightforward with options for mounting support on a plate, rail, or directly under a contactor. The LRD3359 is designed with screw clamp terminals for secure and reliable connections, accommodating a range of cable sizes and types. It also features temperature compensation from -20 to 60 °C, ensuring consistent performance across various operating environments.
The Schneider LRD3359 is a testament to Schneider Electric's commitment to innovation, sustainability, and quality, making it an essential component for motor protection in industrial applications.
| Specification | Description |
|---|---|
| Part Number | LRD3359 |
| Alternative Part Number | LRD3359 |
| Manufacturer | Schneider |
| Product Type | Differential Thermal Overload Relay |
| Device Short Name | LRD |
| Application | Motor Protection |
| Product Compatibility | LC1D80, LC1D95 |
| Network Type | AC, DC |
| Thermal Protection Adjustment Range | 48 to 65 A |
| Rated Insulation Voltage | 1000 V power circuit conforming to IEC 60947-4-1 |
| Network Frequency | 0 to 400 Hz |
| Mounting Support | Plate with specific accessories, Rail with specific accessories, Under contactor |
| Tripping Threshold | 1.14 +/- 0.06 Ir conforming to IEC 60947-4-1 |
| Auxiliary Contact Composition | 1 NO + 1 NC |
| Conventional Free Air Thermal Current | 5 A for signalling circuit |
| Permissible Current | 0.72 A at 500 V AC-15 for signalling circuit, 0.06 A at 440 V DC-13 for signalling circuit |
| Rated Operational Voltage | 1000 V AC 0 to 400 Hz for power circuit conforming to IEC 60947-4-1 |
| Rated Impulse Withstand Voltage | 6 kV conforming to IEC 60947-1 |
| Phase Failure Sensitivity | Tripping current 130 % of Ir on two phase, the last one at 0 |
| Control Type | Red push-button: stop, Blue push-button: reset |
| Temperature Compensation | -20 to 60 °C |
| Connections - Terminals | Screw clamp terminals for power circuit and control circuit with varying cable capacities |
| Tightening Torque | Control circuit: 1.7 N.m, Power circuit: 9 N.m |
| Height | 81 mm |
| Width | 70 mm |
| Depth | 115 mm |
| Net Weight | 0.51 kg |
| 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, etc. |
| Product Certifications | IEC, UL, CSA, CCC, EAC, ATEX INERIS, etc. |
What is the voltage rating for this overload relay?
The overload relay is rated for a system voltage of 690 V AC, suitable for a wide range of industrial applications.
Can this overload relay be used with motors?
Yes, it is specifically designed for motor protection and is compatible with LC1D80 and LC1D95 contactors.
What is the thermal protection adjustment range of this relay?
The thermal protection adjustment range for this relay is 48 to 65 A, allowing for precise motor protection settings.
How does the phase failure sensitivity function work?
The phase failure sensitivity feature triggers the relay when the current reaches 130% of the rated current on two phases, with the last one at zero.
What type of terminals does this overload relay have?
It comes equipped with screw clamp terminals, providing a secure and reliable connection for both power and control circuits.
Is there a specific ambient temperature range for operating this relay?
The relay operates effectively within an ambient temperature range of -20 to 60 °C without derating.
What certifications does this overload relay hold?
It holds several product certifications, including IEC, UL, CSA, CCC, EAC, and ATEX INERIS, ensuring compliance with international standards.
What is the IP degree of protection for this relay?
The relay has an IP20 degree of protection, providing a basic level of protection against solid objects.
What is the significance of the Green Premium product status?
The Green Premium product status indicates that the relay complies with the latest environmental regulations and is free of substances of very high concern (SVHC).
How robust is this overload relay in terms of mechanical stress?
The relay is mechanically robust, withstanding vibrations of 6 Gn and shocks of 15 Gn for 11 ms, ensuring durability in challenging industrial environments.
- Protection of AC motors from overloads in industrial automation systems
- Integration into motor control systems for compressors, conveyors, and pumps
- Use in heating, ventilation, and air conditioning (HVAC) applications for fan motor protection
- Implementation in material handling equipment to safeguard electric motors
- Installation in manufacturing plants for protecting machinery such as mixers, grinders, and crushers
- Utilisation in agricultural machinery to prevent motor burnout due to excessive load
- Application in packaging machinery for consistent motor performance and longevity
- Incorporation into water treatment plants for pump motor protection against overload conditions
- Deployment in construction equipment to ensure motor safety under variable load conditions
- Inclusion in marine applications for motor control and protection on ships and docks
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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