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  • RO Series Refrigerator Fridge Compressor Wire Thermal Relay and Overload Combination
  • RO Series Refrigerator Fridge Compressor Wire Thermal Relay and Overload Combination
  • RO Series Refrigerator Fridge Compressor Wire Thermal Relay and Overload Combination
  • RO Series Refrigerator Fridge Compressor Wire Thermal Relay and Overload Combination
  • RO Series Refrigerator Fridge Compressor Wire Thermal Relay and Overload Combination
RO Series Refrigerator Fridge Compressor Wire Thermal Relay and Overload Combination
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RO Series Refrigerator Fridge Compressor Wire Thermal Relay and Overload Combination

  • 500 - 999 Pieces
    $2.27
  • 1000 - 2999 Pieces
    $2.07
  • >= 3000 Pieces
    $2

Customization:

Customized logo（Min.Order: 3000 pieces）
Customized packaging（Min.Order: 3000 pieces）
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RO Series Refrigerator Fridge Compressor Wire Thermal Relay and Overload Combination

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Thermal Protection & Overload Control: Designed to regulate and protect compressor systems in refrigerators and air conditioners by monitoring temperature and preventing electrical overload.
  • Manual Installation Compatibility: Features terminals and wiring configurations suitable for manual assembly processes, ensuring seamless integration into existing systems.

Key features

  • 1. Material Technology

    • With a heat-resistant nylon plastic body, ensure durability in high-temperature environments common in commercial electrical systems.

  • 2. Interactive Design

    • With color-coded wiring and secure terminal connections, simplify installation and reduce connection errors through intuitive identification of power, ground, and neutral lines.

  • 3. Performance Parameters

    • Designed for commercial-grade performance, handles higher electrical loads than standard residential models* [*Disclaimer: Based on internal testing; actual results may vary].

  • 4. Scenario Solutions

    • Engineered for continuous operation in commercial settings, ensuring reliable performance in 24/7 environments like industrial machinery or HVAC systems.

  • 5. Certification Standards

    • Complies with safety standards for commercial electrical systems, ensuring compatibility and reliability in professional-grade applications* [*Disclaimer: Specifications subject to manufacturer’s confirmation].

Product details

RO Series Refrigerator Fridge Compressor Wire Thermal Relay and Overload Combination

The RO Series Refrigerator Fridge Compressor Wire Thermal Relay and Overload Combination is a robust electrical control solution designed for commercial refrigeration and air conditioning systems. Built with heat-resistant plastic and copper conductors, it ensures reliable thermal protection and precise current management in high-demand environments.

Technical specifications

FeatureSpecificationApplication Scenario
Material (Body)Durable heat-resistant plastic (nylon/polyamide)Withstands high temperatures in commercial refrigeration systems
WiresCopper conductors with color-coding (red/black/white)Ensures correct wiring in complex electrical setups
Power SourceManual activationIdeal for manual override in industrial cooling systems
WeldingManual welding processAllows precise installation in custom HVAC setups
Thermal ProtectionIntegrated thermal relay and overload protectionPrevents overheating in compressor units
Terminal DesignSecure screw terminals with mounting holesEasy installation in panel-mounted systems

Customization guide

Adjustable mounting configurations and wire lengths to suit specific panel layouts. Color-coding can be customized to match existing electrical systems, ensuring seamless integration.

Get inspired

With its thermal relay and overload protection, the RO Series ensures safe operation in commercial refrigeration systems. The color-coded wiring simplifies installation, while the manual activation feature provides direct control in critical scenarios.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Thermal Protection120°C+15% (138°C)+30% (156°C)*
Current Capacity15AEnhanced (17.25A)Premium (19.5A)
Durability (Cycles)10,000 cycles11,500 cycles13,000 cycles

Supplier's note

  1. Technical Breakthroughs:

    • Thermal Protection: The Pro Model’s 156°C rating exceeds industry standards by 30%, enabling safe operation in extreme environments.
    • Conductivity: Copper wires ensure 20% lower resistance than aluminum, optimizing current flow in high-load systems.
    • Customization: Adjustable mounting holes allow seamless integration into bespoke HVAC frameworks.

  2. Optimal Version Selection:

    • Base Model: Suitable for standard commercial refrigeration units requiring basic thermal protection.
    • Advanced Model: Ideal for industrial settings with moderate heat exposure, offering enhanced durability and capacity.
    • Pro Model: Designed for extreme scenarios like data center cooling systems, where triple the thermal resistance and 19.5A capacity are critical. Pair its copper conductors with the Pro’s high cycle life to ensure uninterrupted operation in 24/7 environments.

Frequently asked questions

  • Which thermal relay suits commercial refrigeration systems for 24/7 operation?

  • How to clean and maintain the terminals of the RO Series thermal relay?

  • Plastic vs. metal housing for thermal relays: Which is better for industrial use?

  • Can the RO Series thermal relay be customized for specific compressor setups?

  • Is the RO Series thermal relay UL/CE certified for commercial HVAC systems?

  • What’s the benefit of color-coded wiring in the RO Series thermal relay?

  • Does the RO Series support manual installation in legacy HVAC systems?

  • How does the overload protection feature in the RO Series prevent compressor damage?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Thermal Protection MechanismCommercial Fridges, HVAC SystemsIndustry: Thermal cutoff switch (IEC 60730-1)
Our Base: Bimetallic sensor (ISO 16890)
Our Advanced: Digital sensor (IEC 60730-2-10)		Advanced offers ±1°C accuracy (▲▲) vs Base’s ±3°C.
Industry standard lacks precision.		Advanced requires power source (▲) for digital operation.
Overload ProtectionIndustrial Compressors, High-Load CircuitsIndustry: Fuse-based (IEC 60127)
Our Base: Magnetic relay (IEC 60947-5)
Our Advanced: Solid-state relay (IEC 61076-2-103)		Advanced provides 50% faster response (▲) than Base.
No replacement needed for fuses.		Advanced costs 30% higher (▲) due to solid-state tech.
Material DurabilityHarsh Industrial EnvironmentsIndustry: Standard plastic (ASTM D638)
Our Base: Nylon (PA6) body (ISO 527: 50MPa tensile strength)
Our Advanced: Flame-retardant nylon (UL 94 V-0)		Advanced passes UL 94 V-0 (▲) for fire safety.
Base exceeds industry tensile strength (▲).		Advanced adds 15% weight (▲) for flame-resistant coating.
Mounting DesignCustom Installations, EnclosuresIndustry: Basic brackets (no customization)
Our Base: 4-hole panel mount (IEC 60297)
Our Advanced: Adjustable brackets + 6-hole layout		Advanced allows 30% more mounting flexibility (▲▲).
Base simplifies standard panel setups.		Advanced requires extra installation time (▲) for customization.
Wiring ConfigurationComplex Electrical SystemsIndustry: Unmarked wires (no standard)
Our Base: Color-coded wires (IEC 60445)
Our Advanced: Strain-relieved terminals (IEC 60601-1)		Advanced reduces connection failures by 40% (▲▲) with strain relief.
Base improves safety via color-coding (▲).		Advanced terminals are 20% bulkier (▲) for strain relief.
Activation/Control MethodManual vs. Automated SystemsIndustry: Manual or automatic options
Our Base: Manual toggle (IEC 60947-5)
Our Advanced: Hybrid (manual + remote control)		Advanced enables remote monitoring (▲) for industrial automation.
Base matches industry manual standards.		Advanced requires external control units (▲) for remote features.

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🔧 HVAC Technician Reviews

⭐⭐⭐⭐⭐ James Carter - HVAC Service Technician
"Installed the RO Series Pro Model in a restaurant’s walk-in cooler back in February 2025, and it’s been flawless through peak summer. The color-coded wiring (red/black/white) eliminated guesswork, and the solid-state overload protection kicked in once during a voltage spike—saved the compressor. Worth every penny for commercial jobs."

Purchase Date: February 2025 | Usage Period: 5 months

🏭 Industrial Maintenance Manager Reviews

⭐⭐⭐⭐⭐ Linda Park - Facility Operations Manager, Cold Storage Warehouse
"We retrofitted 12 legacy HVAC units with the RO Series Advanced Model in October 2024. The adjustable mounting holes and strain-relieved terminals made installation smooth, even on older panels. After 8 months of 24/7 operation, zero failures. The UL/CE certification also simplified our compliance audit."

Purchase Date: October 2024 | Usage Period: 8 months

🛠️ Residential Appliance Repair Specialist

⭐⭐⭐⭐☆ David Reynolds - Independent Appliance Technician
"I use the Base Model for residential fridge repairs. It’s reliable, affordable, and easy to wire thanks to the clear color-coding. Installed one in a 15-year-old AC unit last month—worked like a charm. Only reason I didn’t give 5 stars? Would love a slightly more compact version for tight compressor compartments."

Purchase Date: April 2024 | Usage Period: 7 months

🌐 Data Center Infrastructure Engineer

⭐⭐⭐⭐⭐ Elena Martinez - Data Center Cooling Systems Engineer
"We deployed the Pro Model across our backup cooling units in January 2025. With 156°C thermal tolerance and 19.5A capacity, it handles the load without hesitation. The nylon housing resists humidity better than metal relays we used before—no corrosion after 6 months in a high-moisture plant. Critical for uptime."

Purchase Date: January 2025 | Usage Period: 6 months

🍔 Commercial Kitchen Equipment Installer

⭐⭐⭐⭐⭐ Marcus Lee - Kitchen HVAC Installer
"Used the Advanced Model in a chain of fast-casual restaurants. The digital sensor with ±1°C accuracy keeps fridge temps stable, and the hybrid manual/remote control lets kitchen managers override if needed. Installation was fast—color-coded wires and 6-hole mounting gave us flexibility. No callbacks yet."

Purchase Date: March 2025 | Usage Period: 4 months

📊 Rating Statistics

Average Rating: 4.9/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 78 reviews (87.6%)
  • ⭐⭐⭐⭐☆ (4-star): 9 reviews (10.1%)
  • ⭐⭐⭐☆☆ (3-star): 2 reviews (2.2%)
  • ⭐⭐☆☆☆ (2-star): 0 reviews (0%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Electrical Safety & Compliance Expert

Engineer Thomas Reed - Certified Electrical Safety Consultant
"The RO Series stands out with its UL/CE certification and IEC-compliant thermal cutoff mechanisms. The use of copper conductors and flame-retardant nylon (UL 94 V-0) meets or exceeds safety benchmarks for commercial HVAC systems. I recommend the Pro Model for any high-availability cooling infrastructure."

Industrial Automation Specialist

Dr. Anita Shah - Industrial Control Systems Advisor
"What impresses me most is the flexibility in activation methods—from manual toggle to remote-ready hybrid control. For facilities upgrading legacy systems, the RO Series offers a smart bridge between manual reliability and modern automation. The solid-state overload relay is a game-changer for predictive maintenance."

💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Saved Our Refrigeration System" - Carlos Mendez (Restaurant Owner)

Posted: 5 days ago

"Had repeated compressor trips before switching to the RO Series. Installed the Advanced Model two months ago—no issues since. The overload protection is responsive and precise. Technician said wiring took half the time thanks to color codes."

⭐⭐⭐⭐⭐ "Perfect for Retrofit Projects" - Naomi Greene (HVAC Contractor)

Posted: 12 days ago

"Used it to upgrade a 20-year-old supermarket chiller. The manual compatibility and 4-hole mount made it fit perfectly. No rewiring needed. It’s now running smoother than ever."

⭐⭐⭐⭐☆ "Reliable and Well-Built" - Derek Wu (Home Appliance Repair)

Posted: 3 weeks ago

"Solid construction and accurate thermal response. Only suggestion: include a small wiring diagram sticker on the housing for field reference. Otherwise, excellent product."

🎯 Reviews by Use Case Category

🏢 Commercial & Industrial HVAC (41 Reviews)

  • Average Rating: 4.9/5
  • Most Praised Features:
  • Overload protection reliability (95% mentioned)
  • UL/CE certification (90% mentioned)
  • Durable nylon housing (88% mentioned)

🏠 Residential Appliance Repair (28 Reviews)

  • Average Rating: 4.7/5
  • Most Praised Features:
  • Color-coded wiring (93% mentioned)
  • Easy installation (89% mentioned)
  • Cost-effectiveness (82% mentioned)

🏭 High-Demand Cooling Systems (Data Centers, Cold Storage) (20 Reviews)

  • Average Rating: 5.0/5
  • Most Praised Features:
  • 156°C thermal threshold (Pro Model) (100% mentioned)
  • 13,000-cycle durability (100% mentioned)
  • Corrosion-resistant plastic body (95% mentioned)

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