Motor Thermal Overload Relay CDR8 Series
- Product: Motor Thermal Overload Relay CDR8 Series
- Is_customized: YES
- Certification: CCC, CICE
- Warranty: 18 months
- Rated insulation voltage Ui(V): 690V
- Tripping class: 10A
- Network Type: AC
- IP Protection: IP20
Overview
CDR8 motor thermal overload relay is a complex electrical device designed to provide comprehensive protection for three-phase AC motors. The operating frequency is 50Hz, the rated operating voltage is 380V or 220V, and the current is adjustable from 0.25A to 160A. CDR8 Series Motor Thermal Overload Relay is designed to protect the motor from overload, blockage, phase loss and imbalance, ensuring reliable operation of the motor and extending its service life.With its intelligent thermal accumulation protection feature, the CDR8 is a cutting-edge solution for motor protection applications.
Product Description
Motor Thermal Overload Relay CDR8: Protection for 3 Phase AC Motor Safety
Electric Motor Protection Relay CDR8 is a versatile protection device that is widely used in industrial and commercial electrical systems. It provides a high level of protection for three-phase AC motors, providing protection against a range of fault conditions including overload, jam, phase loss and voltage unbalance.
1. Electric Motor Protection Relay CDR8 Series Features:
—Strong Protection Capabilities:
Protect the motor from various operating hazards, prevent motor overload, phase loss, blockage, as well as overvoltage and undervoltage conditions, ensuring the overall safety of the motor.
—Extensive Protection Coverage:
Boasting a wide-ranging protective coverage, the relay is capable of addressing diverse motor protection needs. Its broad applicability makes it an ideal choice for various industrial and commercial electrical systems, providing reliable protection across different motor operating scenarios.
—Customizable Tripping Curves with Electronic Chip Control:
Utilizing an advanced electronic chip, the relay allows for the customization of tripping curves to suit specific motor protection requirements. This flexibility ensures that the relay can be tailored to the unique needs of different motor types and operational conditions.
—Effective Protection for Heavy-Load Startup Motors:
The relay provides specialized protection for heavy-load startup motors, covering:
a. Motors with Long Startup Times: It offers reliable protection for motors that require extended periods to reach operational speed, safeguarding against potential damage during startup.
b. Blockage-Prone Motors: Designed to protect motors that are susceptible to blockage, the relay prevents damage by quickly responding to blockage conditions and initiating protection measures.
c. Motors with Cyclical Loads: It ensures continuous protection for motors subjected to fluctuating loads, maintaining motor integrity and performance in the face of changing operational demands.
Working Conditions and Installation Requirements: Kemus’ Motor Thermal Overload Relay
Kemus CDR8 Series 3 Phase Motor Overload Relay is designed to operate under a variety of environmental conditions and installation requirements, ensuring reliable performance in different settings.
Detailed List of Working Conditions:
—Ambient Air Temperature: operation ranges fm -5°C to +40°C, averaging ≤ +35°C over 24 hours.
—Altitude: up to 2000m above sea level.
—Relative Humidity: Up to 50% @ +40°C, higher at lower temps (e.g., 90% @ 20°C), with condensation precautions.
—Installation Orientation: Vertical position, ≤ 30° tilt allowed.
—Protection from Elements: Install in areas shielded from impacts, vibrations, rain, and snow.
—Pollution Degree: Designed for use in environments with a pollution degree of 3, indicating a moderate level of protection against dust and other particles.
—Installation Category: Built for environments with a pollution degree of 3, offering moderate dust and particle protection.
—Rated Impulse Withstand Voltage (Uimp): Capable of withstanding impulse voltages up to 6kV, ensuring the relay’s durability in electrical systems.
—Degree of Protection (IP Rating): IP20 rated, protects against >1.0 mm solids, not liquids (terminals unprotected).
Installation Requirements:
—Mounting Type: Versatile installation options for CDR8 Series, allowing screw or 35mm DIN rail mounting.
—Flame Resistance: Components presumed to meet flame resistance standards for electrical fire safety.
—Certifications and Standards: Complies with certifications as IEC 60947-4-1 and IEC 60947-5-1/GB14048.4, ensuring quality and reliability.
Main Technical Performance of Motor Thermal Overload Relay CDR8 Series:
| Model | CDR8-38 | CDR8-65 |
| Rated Insulation Voltage (U) | 690V | 690V |
| Overload Protection | Yes | Yes |
| Phase Loss Protection | Yes | Yes |
| Manual Reset | Yes | Yes |
| Automatic Reset | Yes | Yes |
| Stop Button | Yes | Yes |
| Test Button | Yes | Yes |
| Tripping Indication | Yes | Yes |
| Temperature Compensation | -5~+40℃ | |
| Tripping Class | 10A | 10A |
| Installation Method | Combined | Combined |
| Auxiliary Circuit | Contact Specification 10/01 | |
| AC-15 220V Rated Working Current (Ie) | 1.64A | 1.64A |
| AC-15 220V Nominal Heating Current (Ith) | 5A | 5A |
| AC-15 380V Rated Working Current (Ie) | 0.95A | 0.95A |
| AC-15 380V Nominal Heating Current (Ith) | 5A | 5A |
| DC-13 220V Rated Working Current (Ie) | 0.15A | 0.15A |
| DC-13 220V Nominal Heating Current (Ith) | 5A | 5A |
| Certification | CCC, CICE | |
Related Products
UER3 Thermal Overload Relay
UER1-40 Thermal Overload Relay
Why Choose Motor Thermal Overload Relay CDR8
Precision Protection: The CDR8 Relay offers tailored thermal protection with adjustable current settings, ensuring precise motor safeguarding.
Reliability Assurance: Its temperature auto-compensation feature guarantees reliable operation across varying environmental temperatures, maintaining consistent performance.
Versatile Integration: With dual auxiliary contacts, the UER1 Series Relay provides flexible control options, easily integrating with different power sources and systems.
Quick Response Mechanism: Equipped with a manual/auto reset function, the Thermal OVerload Relay allows for immediate action in the event of an overload, reducing downtime.
Robust Voltage Endurance: Suitable for high voltage systems up to 690V, the CDR8 Series Relay delivers durable insulation and withstands impulse voltages up to 6kV.
Intuitive Operation Indicators: Clear and visible status lights provide immediate feedback on the system’s condition, ensuring easy monitoring and peace of mind.
Motor Thermal Overload Relay CDR8 Ensures Uncompromising Quality in Motor Protection Solutions
- Multifunctional Design
- Wide Parameter Range
- Easy Installation
- Compact Size
- Durable Materials
- Overload and Phase Loss Protection
- High Sensitivity
- Adjustable Settings
- User-friendly Interface
Comprehensive Motor Protection， Never Leave Motor Thermal Overload Relay CDR8
- Power Systems
- Home Safety
- Textile Machinery
- Precision Thermal Device
- Mining Machinery Monitor
- Oil Rig Equipment
- Chemical Equipment
- Gas Compressor Units
- Petrochemical Pumps
Why Choose Kemus
Motor Thermal Overload Relay CDR8: Essential for Safety
– CDR8 Series Motor Thermal Overload Relay ensure efficient current management and swift fault current interruption in high-voltage circuits, maintaining system safety.
– Providing motor overload protection by tripping the control circuit upon detecting excessive heat from electrical current, preventing motor damage.
– Cost-effective design, widely implemented across industries for reliable electrical system protection.
Kemus' Motor Thermal Overload Relay CDR8 Leading Production Facility
– Self-owned otor Thermal Overload Relay CDR8 Manufacturing Facility: Our state-of-the-art factory, equipped with the latest technology, ensures a stable production flow and consistent quality, making it ideal for large-scale electrical safety projects and installations.
– Advanced Production Technology: Leveraging proprietary technology and processes, our Thermal Overload Relay are manufactured with precision, offering superior performance and reliability, essential for critical electrical systems.
– Scalability for Large Projects: With the capability to produce in large quantities while maintaining a stable quality standard, our factory is well-suited to meet the demands of extensive exterior electrical installations and large-scale building projects.
Quality Consistency: Motor Thermal Overload Relay CDR8 is manufactured to ensure a uniform standard of quality, which is vital for walling systems and other applications where consistent performance is required.
- Pre-Inspection Review: Kemus initiates the inspection with a thorough review of the RCCB's operational history and customer feedback to identify potential concerns.
- Visual and Functional Assessment: Our experts conduct a detailed visual inspection and test the RCCB's functionality, ensuring all components are in optimal condition and operate as intended.
- Performance Testing: Utilizing advanced diagnostic tools, Kemus evaluates the RCCB's performance under various simulated conditions to guarantee sensitivity and response accuracy.
- Certification and Documentation: Upon successful testing, Kemus certifies the RCCB, providing comprehensive documentation for record-keeping and customer assurance.
Exhibition Worldwide
- Direct Factory Price
- Quality Without Compromise
- Supply Stability
- Delivery On Time
- Thoughtful Service
- More Options From Us
- Useful introduction and suggestion
- Less communication, better understanding
Certified management systems, processes and products which ensure the quality of the product you got.
Working with us, you will get
Kemus Motor Thermal Overload Relay CDR8 is the leading manufacturer and supplier of Thermal Overload Relay. Kemus UER1-40 Thermal Overload Relay is also one of the largest wholesale suppliers of electrical protection devices in China.
- Direct Factory Price
- Quality Without Compromise
- Supply Stability
- Delivery On Time
- Thoughtful Service
- More Options From Us
- Useful introduction and suggestion
- Less communication, better understanding
Packing & Delivery
Motor Thermal Overload Relay CDR8 FAQ
- 01.What is the primary function of the Motor Thermal Overload Relay CDR8? It protects electric motors from overloads, phase loss, and blockage by tripping the circuit.
- 02.What are the optimal operating environment conditions for CDR8? -5°C to +40°C & relative humidity not exceeding 50% at +40°C.
- 03.At what altitude can the CDR8 be installed? up to 2000 meters above sea level.
- 04.What does mean IP20? Protect against solid objects larger than 1.0 mm but liquids excluded.
- 05.What is the rated impulse withstand voltage What is the rated impulse withstand voltage
- 06.What is type of mounting ? The CDR8 supports screw mounting and 35mm DIN rail mounting for versatile installation.
- 07.Is the CDR8 suitable for use in dusty environments? It offers moderate protection against dust and particles.
- 08.How often should the CDR8 Relay be inspected to ensure optimal performance? Regular inspections , typically every 6-12 months.
Motor Thermal Overload Relay CDR8 Solutions
