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Schneider Electric Thermal Overload Relay, 1 NO/1 NC, 1.6 - 8 A, 8A Contact, 300 mW, 690V, IP20 LR9D
Specifications
| Country of Origin | India |
|---|---|
| Brand | Schneider Electric |
| Length | 45mm |
| Model | LR9D |
| Depth | 72.5mm |
| IP Rating | IP20 |
| Width | 79.9mm |
| Mount Type | Under Contactor Mount |
| Series | LR9D |
| Power Rating | 300mW |
| Maximum Operating Temperature | 70°C |
| Minimum Operating Temperature | -25°C |
| Terminal type | Screw |
| Contact Voltage | 690V |
| Reset Method | Automatic & Manual |
| Normal State Configuration | 1 NO/1 NC |
| Relay Contact Current | 1.6, 8A |
| Number of Auxiliary Contacts | 2 |
| Pole and Throw Configuration | 3 |
| Control Voltage | 690V |
| Adjustable Current Range | 1.6 → 8 A |
Key Features
- Protects electric motors against overload currents with adjustable thermal settings between 1.6 and 8 amperes.
- Features a 1 normally open and 1 normally closed contact arrangement for enhanced control flexibility.
- Offers IP20 protection for increased operator safety and front panel durability.
- Compatible with direct mounting on contactors, enabling streamlined installation in control panels.
- Includes both automatic and manual reset methods for versatile operation and quick restoration after trip events.
- Rated at 690V maximum contact voltage and 8 A contact rating, covering demanding industrial load requirements.
- Provides ambient insensitivity and selectable trip classes to adapt to various application needs, such as HVAC, pumping, and materials handling.
Product Description
The Schneider Electric LR9D08 Thermal Overload Relay is a specialized safety and control device designed for reliable motor protection in electrical and automation applications. This relay is part of the LR9D series and is engineered for direct mounting with contactors, ensuring compact integration in control panels and motor starter assemblies. Designed to prevent damage due to overload currents, it features an adjustable current trip range from 1.6 to 8 A, making it suitable for motors with varying operational loads.
This relay provides a comprehensive set of safety and operational features including a 1 NO/1 NC contact arrangement, allowing for both signaling and circuit-breaking functionality. The device is equipped with a built-in trip indicator, a test button, and an easy-to-operate reset mode selector with options for both automatic and manual reset. Its terminal configuration uses screw terminals, ensuring secure, vibration-resistant connections.
Protection is at the forefront, with an IP20 rating for its front panel, safeguarding users during maintenance or operation. The LR9D08 boasts a high-voltage rating, with a maximum contact voltage of 690V and a contact current capability up to 8A. For increased adaptability, it provides selectable trip classes (5, 10, 20, 30) and maintains stable performance regardless of ambient conditions, making it ideal for industries with variable climates and heavy electrical loads.
The compact design preserves panel space and its under-contactor mount format simplifies retrofits and new installations. Applications for the LR9D08 range from material handling to pumping systems, HVAC units, manufacturing equipment, and other industrial or commercial machinery requiring robust and responsive thermal overload protection. The relay’s performance parameters meet international standards such as UL, CSA, EN/IEC, GB/T, and UKCA, providing confidence for global use.
This LR9D08 model is self-powered and easily couples with TeSys N contactors to form compact NEMA starters. Additional product benefits include ambient insensitivity, selectable reset and trip functions, and ease of service thanks to clear indicators and direct interface access.
Whether for new panel builds or maintenance upgrades, Schneider Electric’s LR9D08 overload relay stands out for its reliability, operational flexibility, and refined protective qualities, enabling safe and sustainable power management across industrial, commercial, and infrastructure projects.
For more overload relay solutions and additional Schneider Electric products, browse the Electronics & Electricals - Relays & Contactors category at EnvMart.
Explore more products in our Overload Relays category.
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Frequently Asked Questions
The relay features an adjustable current trip range from 1.6 to 8 A, making it suitable for motors with varying operational loads.
This model has a maximum contact voltage rating of 690V, which allows it to handle demanding industrial load requirements.
It has a configuration of 1 normally open (NO) and 1 normally closed (NC) contact, providing enhanced control flexibility.
The relay has an IP20 rating, which provides protection for the front panel, ensuring operator safety during maintenance or operation.
The relay measures 45mm in length, 79.9mm in width, and 72.5mm in depth, allowing for compact installation in control panels.
It includes both automatic and manual reset methods, allowing for versatile operation and quick restoration after trip events.
The LR9D model has a power rating of 300mW, which supports its operational functionality in various applications.
The normal state configuration of this relay is 1 normally open (NO) and 1 normally closed (NC) contact.
The relay can operate within a temperature range of -25°C to 70°C, making it suitable for various environmental conditions.
It uses screw terminals, ensuring secure and vibration-resistant connections for reliable operation.
This thermal overload relay is suitable for applications such as HVAC, pumping, and materials handling, among others.
It is designed to be ambient insensitive, maintaining stable performance regardless of environmental changes.
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