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Shopcorp Thermal Overload Relay LR2-D33 (17-25A) - Motor Protection Relay with 1NO/1NC, IEC Rated

Rated 4.6 out of 5
Based on 12 reviews
Original price $26.99 - Original price $26.99
Original price
$26.99
$26.99 - $26.99
Current price $26.99

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Technical Specifications

- Model: LR2-D33
- Type: Thermal Overload Relay
- Amp Range: 17–25A
- Auxiliary Contacts: 1NO + 1NC
- Rated Voltage: Up to 660V AC
- Protection Type: Overload & phase-failure protection
- Compensation: Thermal and temperature compensation
- Reset Options: Manual / Automatic
- Compatibility: LC1D40 through LC1D95
- Dimensions: Approx. 119 × 56 × 71 mm
- Housing: Industrial-grade, heat-resistant materials
- Mechanical Life: Long service endurance for continuous duty
- Wiring: Screw terminals for secure wiring
- Certifications: IEC 60947-4-1
- Applications: HVAC compressors, pumps, fans, conveyors, industrial motors, automation systems

About the Product

Overview – Industrial Motor Protection for HVAC & Automation
The Shopcorp LR2-D33 Thermal Overload Relay (17–25A) provides precise overload, overheating, and phase-failure protection for HVAC equipment, industrial motors, and automation systems. Designed for seamless integration with LC1-D contactors, this relay ensures stable switching and dependable long-term operation.

High-Capacity Overload Protection for Heavy Loads
Engineered for motors operating within the 17–25A range, this overload relay delivers reliable protection in applications such as compressors, pumps, fans, conveyors, and industrial machinery. Its thermal and temperature-compensated design ensures accurate trip response even under fluctuating environment conditions.

Compact & Ready for Easy Installation
With a compact 119 × 56 × 71 mm footprint. The 1NO + 1NC auxiliary contacts provide accurate feedback for automation circuits, interlocks, and safety systems.

Built to IEC Standards for Industrial Reliability
Constructed from high-grade materials and compliant with IEC safety standards, this overload relay delivers strong mechanical endurance and stable electrical performance for demanding motor control environments.

SKU B0G26RTWDP

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average rating 4.6 out of 5
Based on 12 reviews
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100% of reviewers would recommend this product to a friend
Review posted
Reviewed by Sebastian A.
Rated 4 out of 5

IEC Compliance You Can Trust

For industrial installations, IEC *****-4-1 compliance matters. This relay meets the standard and performs like a professional-grade device. It integrates seamlessly with LC1D40-LC1D95 contactors and provides reliable overload and phase-failure protection. I would confidently install this in any heavy-duty motor control setup.

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Reviewed by Antonella Z.
Rated 5 out of 5

Accurate Trip Settings and Smooth Reset

What stands out most is how precise the adjustment dial is. Setting it within the 17-25A range was easy and clear. The manual and automatic reset options are very convenient depending on application needs. Ive used it in a refrigeration system, and its been stable with no nuisance trips.

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Reviewed by Leonardo V.
Rated 4 out of 5

Professional-Grade Industrial Component

You can tell this unit is built for serious industrial work. The housing feels durable and heat-resistant, and the size fits nicely inside control cabinets without wasting space. I tested the overload function before commissioning, and the relay tripped precisely within the set range. Great protection for pumps and conveyors.

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Reviewed by Nicolas A.
Rated 5 out of 5

Reliable and Easy to Integrate

This overload relay was a straightforward addition to a motor starter assembly. The screw terminals hold firmly, and the 1NO/1NC auxiliary contacts make it easy to integrate into safety and alarm circuits. I appreciate the thermal compensation feature, it gives peace of mind in environments where temperature fluctuates.

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Reviewed by Daniela F.
Rated 5 out of 5

Solid Protection for Larger Motor Loads

I installed this LR2-D33 on a 20A compressor motor in an HVAC panel, and it performs exactly as expected. The adjustable 17-25A range makes fine tuning simple and accurate. It mounts cleanly to LC1D contactors and feels very solid once installed. Trip response is consistent and dependable, exactly what you want in motor protection.

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Reviewed by Elliot K.
Rated 4 out of 5

Compact, Durable, and Accurate

Perfect for HVAC systems. It fits nicely on a DIN rail and is not bulky like some others. Provides stable overload response and has not given any nuisance trips. Highly recommended.

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Reviewed by Camila T.
Rated 4 out of 5

Simple Setup and Reliable Protection

The manual/auto reset switch is handy for different scenarios. The thermal compensation feature gives peace of mind because temperature in our plant varies a lot. Works exactly as described.

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Reviewed by Ivy S.
Rated 5 out of 5

Saved One of My Motors Already

We had a cooling pump motor drawing too high current during summer heat. The LR2-D13 protected it immediately before major damage could occur. Great performance for the price.

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Reviewed by Damian R.
Rated 4 out of 5

Strong Build and Very Precise

This relay has a sturdy casing and the terminals hold the wires tight. I also like the visible trip indication because it makes troubleshooting much faster. Definitely worth it for industrial duty.

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Reviewed by Vincent H.
Rated 5 out of 5

Excellent for Industrial Systems

I work with conveyor motors in a warehouse. These relays provide accurate trip response when the load spikes or one phase drifts. Compact size is a plus since space is limited in control panels.

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