A Brief Comparison of Motor Protection Relay Price
The motor protection relay price is affected by many factors. First of all, the functional differences of different models of relays are the main reason. For example, the basic model only provides overload and short-circuit protection, while the advanced model may have remote monitoring, communication functions and fault diagnosis, which directly leads to price differences.
In addition, brand factors, performance parameters (such as current range and environmental adaptability), and production processes (such as material quality and manufacturing accuracy) will also affect the price. Well-known brands and high-performance products are usually more expensive, while products with basic functions and ordinary processes are more economical.
Motor protection relay price by function
The price of motor protection relays varies greatly depending on their features and functions. Basic single function relay for motor protection provide basic protection such as overload and short circuit protection, and are therefore more affordable. However, advanced multifunctional motor protective relays integrate features such as thermal overload simulation, starting (stall), incomplete sequence, jamming (locked rotor), insufficient current, communication protocols (such as Modbus) and diagnostic functions, phase current reversal, motor temperature, etc., and are therefore more expensive.
| Reference Price of motor protection relays | 50-80USD | 80-150USD | 150-250USD |
| Motor Protection Relay function | Basic or single function | Advanced | High Performance |
| Short-circuit / Instantaneous overcurrent | √ | √ | √ |
| Thermal overload | √ | √ | √ |
| Phase current imbalance | √ | √ | √ |
| Phase current loss | √ | √ | √ |
| Over-current(instantaneous and temporised) | √ | √ | √ |
| Ground fault / Instantaneous earth fault | √ | √ | √ |
| Long start (stall) / Incomplete sequence | √ | √ | |
| Jam (locked rotor) | √ | √ | |
| Under-current | √ | √ | |
| Phase current reversal | √ | ||
| Motor temperature (by sensors) | √ | ||
| Rapid cycle lock-out / Locking out | √ | ||
| Load shedding | √ | ||
| Notching or jogging / Number of starts | √ |
Motor protection relay price by phase
The price of motor protection relays is influenced by the type of phase. The single-phase motor protection relays are generally more affordable due to simpler design and lower capacity requirements, making them suitable for residential or light industrial use.
In contrast, three-phase motor protection relays are more expensive, as they handle higher power levels and often include advanced features like phase imbalance detection and comprehensive fault monitoring.
| Model | Function description | Reference Price |
| 1 Phase motor protective relays | Single phase, 1P2L Wiring; 0-100A, AC380V / AC660V, 0.5-820A. | 100-200USD |
| 3 Phase motor protection relays | 3 Phase, 3P3L & 3P4L Wiring; 100-200A, AC380V / AC660V, 0.5-820A, With RS485, | 50-100USD |
Motor protection relay price by brand
The price of motor protection relays varies widely based on the brand (Blue Jay, SEL, ABB, Schneider, GE, Eaton, GIC, etc). Premium brands are typically more expensive due to their reputation for quality, reliability, and advanced features. These brands often offer comprehensive technical support, extended warranties, and compliance with global certifications, which add to their value. Lesser-known or regional brands, while more affordable, may focus on basic functionalities and cater to cost-sensitive markets.
1. Overview of some motor protection brands
BLUE JAY motor protection relay
Blue Jay is a trusted provider of motor protection solutions, offering the advanced PR series motor protection relays. These motor protective relays integrate monitoring, control, protection, and communication, ensuring comprehensive low-voltage motor protection. Capable of addressing issues like overcurrent, undervoltage, phase failure, and more, they are ideal for applications such as pumping, air handling, and material handling. Blue Jay’s versatile product range, from basic to advanced functions, supports real-time monitoring and enhances reliability in industrial motor circuits.
SEL motor protection relay
SEL (Schweitzer Engineering Laboratories) is a renowned American brand recognized for its high-quality and innovative motor protection solutions. SEL products are designed with advanced functionalities, covering a wide range of protection needs, and are adaptable for both retrofit and new installations. While their price point is higher, their comprehensive protection features, robust technical support, and cutting-edge technologies make them a preferred choice for critical industrial applications.
LITTLEFUSE motor protection relay
Littelfuse is a trusted brand offering a comprehensive range of motor and pump protection relays, catering to both basic and advanced applications. Their multifunction relays are designed for single-phase, three-phase, low-voltage, and medium-voltage motors, providing versatile protection against issues like overloads, phase loss, unbalanced loads, and overheating.
With a focus on efficiency and reliability, Littelfuse relays help minimize downtime, reduce repair costs, and extend the lifespan of motors and pumps. Their full-featured product lineup ensures solutions for diverse industrial needs, making them a reliable choice for motor protection across various applications.
2. Brand Comparison of motor protection relay price
| Brand | Function description | Reference Price |
| China- BLUE JAY | Integrate monitoring, control, protection, and communication, ensuring comprehensive low-voltage motor protection. | 50-200USD |
| USA-SEL | All basic motor protection features, including protection for short-circuit, load loss, load jam, frequent-starting, unbalanced current, and phase reversal conditions. | 3000-7000USD |
| USA- LITTLEFUSE | Suitable for overload protection, and they also provide monitoring functions. The protection is unsurpassed by combining overload, voltage, phase loss and reversal, voltage and current imbalance, power monitoring, and underload in one package. | 1000-5000USD |
In summary, motor protection relay prices vary based on functionality, phase type, and brand. Basic models offer cost-effective solutions for standard protection, while advanced options with enhanced features command higher prices. Renowned brands like SEL, Blue Jay, and Littelfuse deliver premium products with comprehensive functions and robust reliability, catering to diverse industrial needs. To learn more about the professional difference between our motor protection relays and other brands, please contact us directly.
