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Thermal Overload Relay

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Schneider Electric 4-6A 1 NO+1 NC 3 Pole EasyPact TVS Differential Thermal Overload Relay, LRE10
By: Schneider Electric
₹1,199
₹2,28547% OFF
L&T 45-75 A Thermal Overload Relays for MNX Contractor, SS94137OOJO
4.0 (6 Reviews)
By: L&t
₹3,544
₹4,70524% OFF
  • Direct Mounting on MNX 45-80

  • Directly Operated

L&T 6-10A Double Pole MU, CS90207OOVO
3.8 (5 Reviews)
By: L&t
₹681
₹6952% OFF
Schneider Electric Tesys 37-50A LRD Model Thermal Overload Relay, LRD350
4.2 (5 Reviews)
By: Schneider Electric
₹5,639
₹7,37023% OFF
  • Tripping Class 10A & 20A Available

  • Higher Operating Temperature

Moglix Insights

Top 1 price range of Thermal Overload Relay

100% of users prefer Thermal Overload Relay in price range of ₹1000-₹2000

Schneider Electric Tesys 2.5-4A LRD Model Thermal Overload Relay, LRD08
4.6 (5 Reviews)
By: Schneider Electric
₹1,849
₹2,61529% OFF
  • Tripping Class 10A & 20A Available

  • Higher Operating Temperature

Schneider Electric Tesys 7-10A LRD Model Thermal Overload Relay, LRD14
4.3 (3 Reviews)
By: Schneider Electric
₹2,069
₹2,93029% OFF
  • Direct Mounting on Contactor is Possible Upto 95A

  • Higher Operating Temperature

Schneider Electric 16-24A Over Load Relay, LRD22
By: Schneider Electric
₹1,604
₹3,02046% OFF
L&T 14-23 A Thermal Overload Relays for MNX Contractor, SS94135OODO
  • Directly Operated

  • Direct Mounting on MNX 45-80

Schneider Electric Tesys 9-13A LRD Model Thermal Overload Relay, LRD16
By: Schneider Electric
₹1,557
₹2,93046% OFF
  • Tripping Class 10A & 20A Available

  • Direct Mounting on Contactor is Possible Upto 95A

L&T 1.4-2.3A MN2 Type Thermal Overload Relay, SS94141OOPO
  • Built-in Single Phasing protection

  • Ambient temperature compensated up to 55 deg C

Schneider Electric Tesys 12-18A LRD Model Thermal Overload Relay, LRD21
By: Schneider Electric
₹2,139
₹3,02029% OFF
  • Green Premium Product

  • Thermal Overload Protection

L&T 2-3.3A MN2 Type Thermal Overload Relay, SS94141OOQO
  • Built-in Single Phasing protection

  • Manual and auto reset mode

L&T 4.5-7.5A MN2 Type Thermal Overload Relay, SS94141OOUO
  • Ambient temperature compensated up to 55 deg C

  • Built-in Single Phasing protection

Schneider Electric Tesys 80-104A LRD Model Thermal Overload Relay, LRD3365
By: Schneider Electric
₹8,969
₹12,67029% OFF
  • Higher Operating Temperature

  • Direct Mounting on Contactor is Possible Upto 95A

L&T 20-33A MN2 Type Thermal Overload Relay, SS94145OOEO
  • Built-in Single Phasing protection

  • Ambient temperature compensated up to 55 deg C

L&T 3-5A MN2 Type Thermal Overload Relay, SS94141OOSO
  • Ambient temperature compensated up to 55 deg C

  • Manual and auto reset mode

Schneider Electric Tesys 0.63-1A LRD Model Thermal Overload Relay, LRD05
By: Schneider Electric
₹2,153
₹2,61517% OFF
  • Tripping Class 10A & 20A Available

  • Direct Mounting on Contactor is Possible Upto 95A

Schneider Electric TeSys LRK 1.6-8A 3 Pole Electronic Thermal Overload Relay, LR9D08
By: Schneider Electric
₹8,639
₹12,20529% OFF
  • Fire Resistance: 850 deg C Conforming to IEC 60695-2-1

  • Class 5 to 30

Schneider Electric TeSys LRK 6.4-32A 3 Pole Electronic Thermal Overload Relay, LR9D32
By: Schneider Electric
₹9,669
₹13,65529% OFF
  • Class 5 to 30

  • Fire Resistance: 850 deg C Conforming to IEC 60695-2-1

Schneider Electric TeSys LRF 90-150A Class 10A Electronic Thermal Overload Relay, LR9F5369
By: Schneider Electric
₹13,379
₹14,5357% OFF
  • Class 10A Conforming to IEC 60947-4-1

  • Fire Resistance: 850 deg C Conforming to IEC 60695-2-1

Schneider Electric TeSys LRK 0.4-2A 3 Pole Electronic Thermal Overload Relay, LR9D02
By: Schneider Electric
₹8,639
₹12,20529% OFF
  • Class 5 to 30

  • Fire Resistance: 850 deg C Conforming to IEC 60695-2-1

Schneider Electric TeSys LRF 300-500A Class 10A Electronic Thermal Overload Relay, LR9F7379
  • Fire Resistance: 850 deg C Conforming to IEC 60695-2-1

  • Class 10A Conforming to IEC 60947-4-1

L&T 14-23A MN2 Thermal Overload Relay, SS94144OODO
  • Manual and auto reset mode

  • Built-in Single Phasing protection

Schneider Electric TeSys LRD 62-80A Class 10A Differential Thermal Overload Relay, LRD380
By: Schneider Electric
₹5,549
₹9,86543% OFF
  • Class 10A Conforming to IEC 60947-4-1

  • Fire Resistance: 850 deg C Conforming to IEC 60695-2-1

Schneider Electric TeSys LRK 60-100A Class 10A Electronic Thermal Overload Relay, LR9F5367
  • Class 10A Conforming to IEC 60947-4-1

  • Fire Resistance: 850 deg C Conforming to IEC 60695-2-1

Schneider Electric TeSys LRD 48-65A Class 10A Differential Thermal Overload Relay, LRD3359
By: Schneider Electric
₹6,699
₹9,46029% OFF
  • Class 10A Conforming to IEC 60947-4-1

  • Fire Resistance: 850 deg C Conforming to IEC 60695-2-1

Schneider Electric TeSys 5.5-8A 690V AC Thermal Overload Relay, LRD12
By: Schneider Electric
₹1,385
₹2,61547% OFF
Havells 12-18A HGST40 A-M Thermal Overload Relay, IHHR23CT
  • Customer Care Number: 1800 103 1313

L&T Kit Mounting MN 5 Relay on MNX 95 / 110 / 140 Contactor, SS94638OOOO (Pack of 20)
L&T Separate Mounting Kit for RTO Relay, CS96306OOOO
L&T Separate Mounting Kit for RTO Relay, CS96335OOOO
L&T 3.6-5.2 A Thermal Overload Relays Type RX MNX Contractor, CS96357OOSO (Pack of 10)
Schneider Electric 2.5-4A 1 NO+1 NC EasyPact TVS Differential Thermal Overload Relay, LRE08
By: Schneider Electric
₹1,199
₹2,28547% OFF
L&T Thermal Overload Relays ML 2/ML 3-Type SS91859OOEO
Schneider Electric 1.6-2.5A 1 NO+1 NC 3 Pole EasyPact TVS Differential Thermal Overload Relay, LRE07
By: Schneider Electric
₹1,619
₹2,28529% OFF
L&T 400m Relay Reset Cord for MN & RTO Relay, SB94207OOOO
Schneider Electric 84-135A 1 NO+1 NC 3 Pole EasyPact TVS Differential Thermal Overload Relay, LRE482
By: Schneider Electric
₹9,469
₹15,10537% OFF
L&T 13-22A Double Pole MU, CS90207OODO
Schneider Electric 30-40A 1 NO+1 NC 3 Pole EasyPact TVS Differential Thermal Overload Relay, LRE355
By: Schneider Electric
₹3,119
₹4,97037% OFF
L&T REO Direct Mounting on MO Contactor, CS90418OOLO (Pack of 10)

Thermal Overload Relays – The Unsung Guardians of Electrical Machinery

In the world of electrical systems and equipment, safety is paramount. Thermal overload relays are vital as the unsung heroes that protect circuits, motors, and machinery from potentially catastrophic overheating and damage. Thermal overload relays can shut off the circuit by monitoring the system's temperature, protecting the equipment and assuring safety.

 

Types of Thermal Overload Relays and Their Uses

  • Bimetallic thermal overload relays operate using a bimetallic strip that physically bends and triggers the relay when subjected to excessive current. They offer a simple mechanical means of protection. Bimetallic overload relays are commonly used to protect AC electric motors from overheating and overcurrent damage.

     
  • Electronic thermal overload relays use solid-state circuitry instead of mechanical parts to monitor current. This allows great precision and adjustability in the overload trip point. Electronic relay overloads are versatile and suitable for protecting pumps, compressors, conveyors, cranes, and various industrial machinery against overcurrent faults.

     
  • Manual reset thermal overload relays require human intervention to reset the relay after it trips due to an overload. This ensures the underlying issue is identified and addressed before allowing the motor or machinery to restart. Manual reset types are crucial for applications where equipment safety is paramount.

     
  • Automatic reset thermal overload relays automatically reset themselves and resume normal operation after tripping once overload conditions clear. Automatic reset types allow uninterrupted processes and are common on equipment where continuity of operation is critical.

     
  • Submersible pump overload relays are purpose-built for protecting submersible pumps against dry run, phase imbalance, and overload conditions. They maximise submersible pump longevity in environments prone to these faults.

     
  • Single-phase thermal overload relays protect single-phase AC motors and machinery. They safeguard against damages from voltage fluctuations, phase loss, abnormal frequency, and excess current.

     
  • Three-phase thermal overload relays monitor and respond to each phase’s current on three-phase systems. They offer comprehensive protection tailored to three-phase motors and industrial equipment.

 

Things To Keep in Mind Before Selecting Thermal Overload Relay

  • Current Rating Match: Choose a thermal relay overload with a current rating matching the motor's rated full load amps for optimal protection. An incorrectly sized relay will not adequately protect the motor.

     
  • Trip Class: Applications dictate the trip class, such as a fast Class 10 trip for sensitive equipment versus a slower Class 20 trip for rugged machinery. Select the appropriate class for proper response time.

     
  • Adjustability: Electronically controlled relays allow adjusting current settings for precision protection. Consider if you need customisable trip points or if a preset is acceptable.

     
  • Reset Type: Determine if an automatic or manual reset suits the application based on whether the process can run unmonitored after a trip occurs.

     
  • Enclosure Rating: The relay's enclosure must suit the operating environment, for example, NEMA 4X for outdoor wash-down. Choose an enclosure that protects from dust, moisture and corrosion.

     
  • Compatibility: Verify the relay properly interfaces with the protected motor and electrical system for seamless operation.

     
  • Brand reputation: Reputable brands are crucial for consistent quality and support. Leading brands offer solid warranties and engineering expertise.

 

Prominent Thermal Overload Relay Brands

Havells Thermal Overload Relays

  • Havells is a major Indian electrical equipment manufacturer trusted for its thermal overload relays engineered for reliable circuit protection.

     
  • Havells OLR relays safeguard industrial machinery, motors, and critical systems across industries.

     
  • Their product HGS Relay is available from 0.12 Ampere - 800 Ampere ratings and has an inbuilt single phasing preventer.

 

Schneider Electric Thermal Overload Relays

  • As a global energy management and automation leader, Schneider Electric delivers exceptionally engineered thermal overload relays.

     
  • Their versatile, high-performance relays protect equipment across applications and are designed for TeSys D, K and F contactor ranges.

     
  • The company also plans to launch TeSys Giga Electronic Relay that can protect motors up to 630A (335 kW /400 V) from overloads. 

 

Larsen & Toubro (L&T) Thermal Overload Relay

  • L&T is an Indian multinational known for expertly designed thermal OLR relays that meet stringent performance and safety standards.

     
  • Their relays come with inbuilt single phasing protection, ‘START’ and ‘OFF / RESET’ push buttons and auto-manual reset modes.

So, no matter what kind of thermal relays you are looking for, here at Moglix, you can buy numerous products from the top brands mentioned above. And the best part? Here, thermal overload relay prices are reasonably low.  

 

Moglix Is the Ideal Source for Thermal Overload Relays

Thermal overload relays are indispensable as our electrical system guardians, constantly watching and responding to threats. Whether on an industrial site with thousands of assets or a single motor in a home shop, the right overload relay prevents catastrophe through attentive protection. Choosing the properly sized and featured relay is crucial for many types, configurations, and applications.

Moglix makes selecting the ideal thermal overload relay for your needs convenient and confident. Browse their inventory to find the perfect overload guardian for your equipment. Invest in the right relay, and keep your electrical system functioning smoothly for the long run.

 

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