⚡ Schneider Electric EOCR

Schneider Electric’s Electronic Overcurrent Relays (EOCR) are precision electronic motor‑protection relays designed to safeguard motors against overload, phase loss, current imbalance, and locked‑rotor conditions.
They offer higher accuracy, faster response, and better diagnostics than traditional thermal overload relays.

EOCRs are commonly used in modern motor‑starter architectures, especially where reliability, adjustability, and digital protection are required.

🔧 Key Points (Short & Clear)

• Electronic overload protection — far more accurate than bimetal thermal relays.
• Wide current adjustment range — one relay covers multiple motor sizes.
• Phase‑loss & imbalance detection — fast trip on abnormal conditions.
• Locked‑rotor protection — prevents motor burnout during stall.
• Selectable trip classes — Class 5/10/20/30 for different motor duties.
• Built‑in diagnostics — LEDs, trip cause indication, test/reset.
• Compact DIN‑rail design — easy to install in control panels.
• Auxiliary outputs — NO/NC contacts for signalling and interlocking.

🧩 Where Schneider EOCR Fits in Motor Control

EOCRs are typically paired with:

• TeSys contactors — for switching
• GV motor circuit breakers — for short‑circuit protection
• Soft starters — for coordinated protection
• VFDs — as external backup protection

They are used as an upgrade or replacement for:

• Thermal overload relays (LRD/LR)
• Basic electronic relays with limited functions

🏭 Typical Applications

• Pumps & fans
• Compressors
• Conveyors
• HVAC systems
• Industrial automation panels
• Process industries

⭐ One‑line summary

Schneider EOCRs are precise, fast‑acting electronic overload relays that deliver advanced motor protection, diagnostics, and flexibility beyond traditional thermal relays.