034845 SCHNEIDER ELECTRIC Tesys Thermal Overload Relay

Review SCHNEIDER ELECTRIC Tesys Thermal Overload Relay

The Schneider Electric 034845 Tesys LR3D21 Thermal Overload Relay is a versatile and reliable electrical protection device designed to prevent motor overheating and ensure optimal performance of electrical systems. This compact, yet robust relay is suitable for various applications, including HVAC, water treatment, pumping, and compressor systems.

The Tesys LR3D21 Thermal Overload Relay features a bidirectional current transformer that enables it to detect both overcurrent and undercurrent conditions. Its thermal element is designed to sense the temperature rise in the winding of the protected motor, providing an additional layer of protection against overheating. With a trip setting range of 50 C to 130 C, this relay caters to a wide range of motor applications.

This Schneider Electric relay comes with a built-in contact arrangement that includes NO (Normally Open) and NC (Normally Closed) contacts, allowing for flexible connection options. The relay's compact design makes it easy to install and integrate into existing electrical systems. It also offers high immunity to electromagnetic interference (EMI), ensuring reliable operation even in demanding environments.

The Tesys LR3D21 Thermal Overload Relay is compatible with various control systems, including the Schneider Electric Masterpact MT range and other third-party systems. It is also RoHS and CE compliant, guaranteeing environmental sustainability and adherence to European safety standards.

Schneider Electric's 034845 Tesys LR3D21 Thermal Overload Relay offers a combination of ease of use, reliability, and robustness, making it an excellent choice for various electrical system protection applications. Its advanced features, such as bidirectional current sensing and temperature sensing, provide enhanced protection against motor overheating and ensure optimal system performance.

The Schneider Electric 034845 Tesys LR3D21 thermal overload relay is a protective device used to disconnect a circuit in case of overheating. Let's discuss some pros and cons of buying this particular thermal overload relay.

1. High Temperature Rating: The LR3D21 model has a high temperature rating of 210 C, making it suitable for applications where high temperatures are common.

2. Wide Current Rating: It can handle up to 100A of current, which is quite substantial for a thermal overload relay.

3. Compact Design: The device has a compact design, making it easier to install in confined spaces.

4. Robust Construction: Schneider Electric is known for its high-quality products, and the LR3D21 is no exception. It is built to last and can withstand harsh environments.

1. Cost: The Schneider Electric 034845 Tesys LR3D21 is a premium product, and its price reflects its features and quality. It may be more expensive than some other thermal overload relays in the market.

2. Complex Installation: Installing this relay may require some technical expertise, making it less suitable for DIY projects.

3. Limited Compatibility: It may not be compatible with all types of electrical systems, so it's essential to check its compatibility with your system before purchasing.

The Schneider Electric 034845 Tesys LR3D21 thermal overload relay is a high-quality and robust device with a wide current rating and a high temperature rating. However, it comes with a higher price tag and may require some technical expertise for installation. Its compact design makes it suitable for confined spaces, and its robust construction ensures that it can withstand harsh environments. If you're looking for a premium thermal overload relay for heavy-duty applications, then the Schneider Electric 034845 Tesys LR3D21 may be the right choice for you.

If you're looking for a high-quality thermal overload relay for heavy-duty applications and are willing to pay a premium price, then the Schneider Electric 034845 Tesys LR3D21 is an excellent choice. However, if you're on a tight budget or have limited technical expertise, then you may want to consider other options in the market that offer similar features but at a lower price point.

Details:

Series tesys. It features adjustable current settings from 12 a to 18 a, a class 10a trip curve, and robust manual/automatic reset mechanism for flexible operation in industrial environments. Application: motor protection against overload and phase imbalance. Key features: adjustable current range: 12 18 amps.

Ships in secure packaging. Schneider Electric tesys LR3D21 thermal overload relay 12 18a, 034845: product overview: the is a high-quality thermal overload relay designed for reliable protection of 3-phase motors against overload, phase failure, and unbalanced load conditions. Condition packaging: brand new, never installed. Type thermal overload relay.

Contact material: silver nickel Agni. Fully tested and compliant with Schneider specifications. Part of Schneider's trusted tesys series, this relay pairs directly with lc1d18 lc1d32 contactors to create a compact and efficient motor starter assembly. Country of manufacture: Thailand.

Reset options: manual or automatic.

specifications genpurrelays:

• brand: Schneider Electric
• mpn: 034845
• model: Lr3d21
• mounting style: Direct Mount To Tesys Contactors
• current rating: 12-18 A
• smart home compatibility: Universal
• type: Thermal Overload Relay
• current type: Ac
• number of pins: 3-pin
• contact material: Silver Nickel Alloy
• application: Industrial
• protection properties: Overload Protection
• upc: 389110348453

general genpurrelays:

• category: Business & Industrial > Electrical Equipment Supplies > General Purpose Relays

offer genpurrelays:

• started: november 4, 2025
• in stock #: 5
• options: ship-to-home
• sold #: 12
• availability: in stock
• prices: $35.95–$82.00
• item condition:
  • New
  • New – Open box
  • Used

returns genpurrelays:

• time: 30 days
• method: money back
• paid by: buyer
• policy: returns accepted

seller genpurrelays:

• city: croydon, pennsylvania
• rating: 100.0%
• # reviews: 43

payments genpurrelays:

• other
• wallet: paypal
• credit card: mastercard

shipping genpurrelays:

• type: calculated
• service: usps ground advantage
• carrier: usps
• transit: 4-11 days
• class: standard