Schneider Easergy Protection Relays – P1, P3 and P5 Series Technical Guide
Schneider Easergy protection relays represent Schneider Electric’s modern generation of compact and high-performance digital relays developed specifically for medium voltage applications. The Easergy family is designed to meet today’s requirements for reliability, communication, cybersecurity, and ease of use in industrial, utility, and commercial power systems.
The Easergy range consists of three main series — Easergy P1, Easergy P3, and Easergy P5 — each targeting different levels of application complexity while maintaining Schneider’s high standards of quality and performance.
Easergy P1 Protection Relay
Easergy P1 is the entry-level model in the Easergy family. It is a compact, simple, and cost-effective protection relay developed for basic medium voltage protection needs.
This relay is particularly suitable for standard feeder protection, motor protection, and simple transformer protection applications. Despite its smaller size and simpler architecture, the P1 relay delivers essential protection functions with high reliability and fast response times.
Key advantages of Easergy P1 include:
- Easy configuration and commissioning
- Compact design suitable for space-limited panels
- Reliable performance in standard distribution applications
- Cost-effective solution for panel builders and contractors
Easergy P1 is often preferred in projects where simplicity, fast delivery, and basic protection requirements are the main priorities.
Easergy P3 Protection Relay (Easergy P3U20 / Easergy P3U30)
The Easergy P3 series, including models such as Easergy P3U20 and Easergy P3U30, is the most widely used and versatile relay in the Easergy family. It offers an excellent balance between functionality, size, and performance.
Easergy P3 provides more than 40 protection functions in a compact housing. It supports advanced features such as:
- Fast arc flash detection and protection
- Compatibility with LPCT and LPVT sensors
- Ethernet communication
- Full IEC 61850 protocol support
The P3 relay is designed for standard to medium complexity medium voltage applications. It is highly suitable for feeder protection, motor protection, and transformer protection in industrial plants and distribution networks.
Easergy P3U20 and Easergy P3U30 models offer different levels of input/output capacity and functionality, allowing engineers to choose the most appropriate version according to project requirements. The series is known for its user-friendly configuration software and strong performance in demanding industrial environments.
Because of its feature-rich yet compact design, Easergy P3 has become one of the most popular choices among Schneider protection relay users for new installations and retrofit projects.
Easergy P5 Protection Relay
Easergy P5 is the most advanced relay in the Easergy family. It is designed for critical and complex medium voltage applications where high performance, flexibility, and safety are essential.
Key features of Easergy P5 include:
- Comprehensive protection from basic overcurrent to advanced differential protection
- Built-in arc flash protection
- Redundant Ethernet communication options
- Advanced automation and logic capabilities
- Withdrawable design for easy maintenance and fast replacement
- Enhanced cybersecurity features
The withdrawable design of Easergy P5 significantly reduces downtime during maintenance or relay replacement, making it particularly valuable in critical power systems such as large industrial plants, data centers, and utility substations.
Easergy P5 also offers superior integration capabilities within Schneider’s EcoStruxure architecture, enabling advanced digital monitoring and remote management.
Comparison of Easergy P1, P3, and P5
| Feature | Easergy P1 | Easergy P3 (P3U20/P3U30) | Easergy P5 |
| Application Level | Basic / Entry-level | Standard to Medium Complexity | Advanced / Critical |
| Number of Protection Functions | Essential functions | 40+ functions | Comprehensive + Advanced |
| Arc Flash Protection | Basic | Yes | Advanced |
| Communication | Standard | Ethernet + IEC 61850 | Redundant Ethernet + Advanced |
| Design | Fixed | Compact | Withdrawable |
| Typical Use | Simple feeders & motors | Industrial & Distribution | Critical substations & plants |
Key Advantages of Schneider Easergy Relays
The entire Easergy family shares several important strengths:
- High measurement accuracy and fast fault detection
- Strong communication capabilities including IEC 61850
- Easy configuration through dedicated software
- Support for modern sensor technologies (LPCT/LPVT)
- Cybersecurity features (especially in P5)
- Seamless integration into Schneider EcoStruxure ecosystem
These features make Easergy relays suitable for both new projects and modernization of existing medium voltage installations.
Schneider Easergy protection relays offer a complete and scalable solution for medium voltage protection needs. While Easergy P1 provides a simple and economical option for basic applications, Easergy P3 (including P3U20 and P3U30) delivers the best balance of features and performance for most standard and industrial projects. For the most demanding applications, Easergy P5 stands out with its advanced functions, withdrawable design, and enhanced cybersecurity.
With their modern design, strong communication capabilities, and reliable protection performance, Easergy relays have become a preferred choice for many engineers and project owners working on medium voltage systems.
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Looking for high-performance Schneider Easergy, Easergy P3, Easergy P3U20, Easergy P3U30, or complete medium voltage protection solutions? We provide expert technical support with genuine Schneider Electric products tailored to your requirements.
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