Overcurrent protection relays typically range from around $100 for basic models to several thousand dollars for advanced digital or microprocessor-based relays.

Price Range

The cost of an overcurrent relay depends on its type, features, and application:

• Basic Electromechanical Relays: Simple overcurrent relays with limited functions can start at $100–$300 .
• Digital or Microprocessor-Based Relays: Advanced relays, such as the NR Series or Schneider Electric MiCOM and VAMP series, designed for medium to high-voltage networks, substations, or industrial switchgear, can cost $500 to several thousand dollars depending on the number of protection functions, communication capabilities, and voltage rating .
• Specialized Relays: Relays for motor protection, transformer differential protection, or railway applications may be priced higher due to additional features and certifications .

Factors Affecting Price

1. Type of Relay: Instantaneous, definite time, inverse time, or multifunctional relays have different costs .
2. Voltage and Current Rating: Relays for high-voltage or high-current systems are more expensive.
3. Protection Features: Relays with multiple protection functions (overcurrent, earth fault, voltage, frequency) cost more.
4. Brand and Manufacturer: Well-known brands like Schneider Electric, GEYA, or VAMP typically command higher prices due to reliability and support .
5. Digital vs Electromechanical: Digital relays offer precise settings, communication interfaces, and advanced monitoring, which increases cost compared to traditional electromechanical relays .

Conclusion

For budgeting purposes, expect to pay at least $100 for a basic overcurrent relay, while industrial-grade digital relays can range from $500 to over $3,000 depending on complexity and application. Consulting with a supplier or electrical engineer can help select the most cost-effective relay for your specific system needs .