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Shopcorp Thermal Overload Relay LR2-D33 (23-32A) - Motor Protection Relay with 1NO/1NC, IEC Rated

Rated 4.5 out of 5
Based on 14 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: LRD3353
- Series: LR2-D33
- Type: Thermal Overload Relay
- Amp Range: 23–32A
- Auxiliary Contacts: 1NO + 1NC
- Rated Voltage: Up to 660V AC
- Protection: Overload & phase-failure protection
- Compensation: Thermal & temperature compensation
- Reset Options: Manual / Automatic
- Compatibility: LC1-D40 to LC1-D95 contactors
- Dimensions: Approx. 119 × 56 × 71 mm (L × W × H)
- Housing: Industrial-grade construction
- Mechanical Endurance: High-cycle durability for industrial use
- Wiring: Screw-type terminals
- Certifications: IEC/EN compliant, CE certified
- Applications: HVAC compressors, pumps, fans, conveyors, refrigeration systems, industrial motors

About the Product

Overview – Heavy-Duty Overload Protection for Industrial Motors
The Shopcorp LR2-D33 series thermal overload relay is built for reliable protection against overload, overheating, and phase failure in HVAC systems, industrial motors, and automation equipment. Designed for compatibility with LC1-D contactors, it delivers precise trip performance and long-term operational stability.

High-Capacity Relay for HVAC, Compressors & Motor Loads
With a 23–32A protection range, this overload relay is ideal for medium and large horsepower motors used in pumps, fans, compressors, conveyors, and industrial machinery. Thermal and temperature compensation ensures consistent trip accuracy under changing ambient conditions.

Compact, Durable
Engineered for space-efficient panel integration, the LR2-D33 features a robust body measuring 119 × 56 × 71 mm and mounts quickly on standard rails. Its 1NO + 1NC auxiliary contacts provide reliable status signaling for automation circuits, safety interlocks, and control panels.

IEC-Compliant Motor Protection
Designed with high-quality materials for industrial durability, this overload relay meets IEC performance and safety standards—ensuring dependable protection and long mechanical service life in demanding motor applications.

SKU B0G26M9Q24

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average rating 4.5 out of 5
Based on 14 reviews
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100% of reviewers would recommend this product to a friend
Review posted
Reviewed by Robert U.
Rated 5 out of 5

Perfect Match for LC1-D Starters

If youre building or servicing a motor starter with LC1-D40 to LC1-D95 contactors, this is a seamless fit. Compact footprint for its rating, solid mechanical endurance, and easy adjustment dial. Its been running in an automation panel for weeks with zero issues. Id definitely use it again.

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Reviewed by Rodrigo T.
Rated 4 out of 5

IEC-Compliant and Built for Heavy Duty Use

Compliance matters in industrial settings, and this unit meets IEC standards without compromise. The 660V rating and 6kV impulse withstand capability give confidence for demanding environments. It is a dependable overload and phase-failure protector for compressors and conveyors alike.

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Reviewed by Aamara T.
Rated 5 out of 5

Reliable for HVAC Applications

I used this relay in a rooftop HVAC unit protecting a large fan motor. The 23-32A adjustment range is ideal for mid-size motor loads. It feels stable under continuous operation and does not cause nuisance trips. Once set correctly, it just does its job quietly in the background.

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Reviewed by Tomas V.
Rated 4 out of 5

Smooth Installation and Clear Signaling

Mounted this in a pump control panel and wiring was straightforward thanks to the screw terminals. The 1NO and 1NC auxiliary contacts made it easy to tie into the alarm circuit. After testing overload conditions, it tripped exactly where it should. Reset function works smoothly in both manual and auto mode.

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Reviewed by Mariana C.
Rated 4 out of 5

Industrial Quality You Can Feel

This relay has a sturdy, professional-grade construction. The housing feels durable and heat-resistant, exactly what you d expect in an industrial control panel. I appreciate the temperature compensation, it helps maintain accurate protection even in hot mechanical rooms. Great value for serious motor protection.

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Reviewed by Santiago A.
Rated 5 out of 5

Excellent Protection for 3-Phase Motors

Installed this on a 30A motor driving a refrigeration compressor and it works flawlessly. The adjustable 23-32A range allowed precise calibration, and the trip response feels accurate and consistent. Build quality is solid and it integrates perfectly with LC1-D contactors. Definitely a reliable motor protection solution.

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Reviewed by Hugo B.
Rated 5 out of 5

Good protection upgrade for aging equipment

I switched out an older relay in a workshop ventilator system and the improvement in response was immediate. Feels like a modern upgrade. Easy to test and reset. Great price for the protection it brings.

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Reviewed by Daphne C.
Rated 4 out of 5

Industrial-grade reliability

I was impressed by how well this relay handles varying ambient conditions. Thermal compensation keeps it accurate even on hot days inside mechanical rooms. It is a powerful, properly designed overload relay.

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Reviewed by Trent H.
Rated 4 out of 5

Sturdy design and dependable performance

You can tell this is not a cheaply made part. The casing is rugged, terminals are high-quality, and the relay reacts quickly when overload occurs. Perfect solution to safeguard motors in conveyor setups.

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Reviewed by Miriam C.
Rated 5 out of 5

Excellent compatibility with LC1-D

As an electrician, compatibility saves me time. This unit clicked into the contactor perfectly and the auxiliary contacts gave me clean feedback for the automation panel. Great performance so far in a refrigeration system.

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