Schneider Electric LR9F5371 Electronic Overload Relay

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Schneider Electric LR9F5371 Electronic Overload Relay

The Schneider LR9F5371 is a high-performance electronic overload relay designed to provide advanced thermal protection for motors in demanding industrial applications. Part of the TeSys LR9F series, this relay integrates intelligent protection features, superior accuracy, and reliable performance, making it ideal for safeguarding motors against overload conditions, phase imbalance, and overheating.

Key Features and Specifications

  • Electronic thermal overload protection
    Uses an advanced electronic sensing mechanism that delivers more precise and stable protection than traditional bimetallic relays.

  • Adjustable current setting
    Offers a wide adjustment range of 30–150 A, allowing flexible adaptation to various motor sizes and load conditions.

  • Class 10A trip curve
    Ensures quick response to overloads while maintaining stable operation for normal motor startup profiles.

  • Phase failure and phase unbalance detection
    Continuously monitors motor phases and triggers protection in case of loss or serious imbalance, helping prevent motor damage.

  • Test and reset functions
    Built-in TEST and RESET controls allow easy verification and manual reset of the relay.

  • Trip indication
    Clear visible indicators display trip status, simplifying maintenance and troubleshooting.

  • Coordinated use with contactors
    Designed to be paired with Schneider LC1F series contactors, ensuring optimal compatibility and high-performance motor control.

  • Auxiliary contacts included
    Equipped with integral 1 NO + 1 NC auxiliary contacts for signaling and interlocking purposes.

Benefits

  • High protection accuracy reduces risk of motor burnout

  • Faster response to abnormal operating conditions

  • Reduced nuisance tripping compared with mechanical relays

  • Easy adjustment and setup for different motor loads

  • Suitable for heavy-duty industrial environments

  • Improves motor lifespan and overall system reliability

Typical Applications

  • Industrial motors and pumps

  • HVAC systems and compressors

  • Conveyor drives and material-handling systems

  • Fans, blowers, and mixers

  • Manufacturing and processing machinery

  • Any application requiring reliable, accurate overload protection

WHO WE ARE

About us

Located in Kunshan, China, Atifts Technology Co., Ltd. is a well-known enterprise specializing in electronic components distribution. We specialize in the sales of global brands of industrial automation components, with a wealth of experience in foreign product agents, and many of the world's leading manufacturers such as Keens, Schneider, SMC, ABB, Siemens, and other world-renowned manufacturers to establish a long-term and stable relations of cooperation.

Atifts Technology Co., Ltd. @ 2024

Over the years, we have always adhered to the "pioneering, pragmatic, standardized, innovative" management philosophy, and constantly promote the close integration of products and market demand. We firmly believe that only by constantly exploring new market areas, doing a good job in every detail, standardizing business processes, and continuously innovating products and services can we ensure that our products are more adaptable to market changes and meet the diversified needs of our customers. Since the founding of the company, we have always adhered to the core concept of "survival by quality", and are committed to providing customers with high-quality electronic components. At the same time, we take specialized R & D manufacturing as the goal, market-oriented development strategy to ensure that our products are always in the forefront of the industry.
With excellent product quality, professional technical service and good market reputation, Kunshan Autofits Technology Co.,Ltd. has won the trust and support of our customers. We look forward to working with more partners hand in hand, to achieve long-term win-win relationship, and jointly promote the prosperity of the electronic components industry.
Where is your company located?
We are located next to Shanghai, the largest city in China, and Kunshan, the first economic county in China. With convenient transportation and developed logistics, it provides a good geographical advantage for our electronic components sales business.
What types of electronic components does your company mainly sell?
We are committed to providing many types and brands of electronic components, including but not limited to Sensors, Switches & Relays, Connectors, Circuit Protectio, Power Supplier & Cable, etc. We have established relationships with many well-known electronic component manufacturers. We have established long-term and stable relationships with many well-known electronic component manufacturers to ensure that the products we sell are of reliable quality and reasonable price.
What are the prices of your products?
Our product prices vary according to market conditions and product models. We are committed to providing high quality electronic components at fair and reasonable prices, and offer our customers a variety of incentives and flexible purchasing methods.
How to purchase your electronic components?
You can contact our customer service staff directly by phone, whatsapp, email, our official website. We support a variety of payment methods, and provide you with fast and safe logistics and distribution services.
How do you guarantee the quality of your products?
We attach great importance to product quality, all the electronic components we sell come from regular channels and undergo strict quality testing. We promise to provide customers with high-quality electronic components, and provide perfect after-sales service to ensure that customers have no worries in the process of use.
If I am not satisfied with the electronic components I purchased, can I return them?
We provide perfect after-sales service, if you are not satisfied with the purchased electronic components, you can return or exchange them within the specified time. Please refer to our official website or consult our customer service staff for the specific return policy and process.
Can your company provide technical support and solutions?
We have a professional technical team that can provide technical support and solutions for our customers. Whether you encounter any problems in choosing or using the products, we will be happy to answer your questions and provide professional technical support.
How to contact your customer service?
You can contact our customer service personnel through the online customer service system on our official website, telephone, e-mail or social media platforms. Our customer service staff will provide you with professional services and answer any questions you may have.
Does your company often organize promotional activities?
In order to give back to our customers, we will organize various promotions from time to time, including discounts, full reductions, giveaways and so on. Please keep an eye on our official website or social media platforms to stay up-to-date with the latest promotions.