Schneider Electric EOCR-SS EOCRSS-05RY7

Product Details

EOCR-SS EOCRSS-05RY7 Product Description

The Schneider EOCR-SS-05RY7 is engineered as a protection-layer component within a fully integrated industrial control architecture. Its role extends well beyond standalone motor protection: it functions as a critical signal source for the control layer, feeding trip and alarm states directly into the PLC digital input bus. In a typical Schneider-based automation platform, the EOCR-SS-05RY7 operates alongside the Modicon M340 or M580 CPU modules, where its relay output connects to discrete input cards such as the BMX DDI 1602 or BMX DDI 3202K, enabling the controller to log fault events, trigger interlocks, and initiate automatic restart sequences without operator intervention.

At the power layer, the EOCR-SS-05RY7 is typically paired with Schneider Acti9 iC60N circuit breakers or GV2ME manual motor starters, forming a coordinated protection chain that satisfies IEC 60947-4-1 selectivity requirements. The relay output (RY7 configuration) interfaces cleanly with Schneider TeSys D or TeSys K contactors — LC1D09 through LC1D38 — allowing the overload relay to directly break the contactor coil circuit upon a trip event, ensuring fail-safe motor shutdown without relying on PLC scan-cycle latency.

For communication-layer integration, the EOCR-SS-05RY7 trip signal can be wired into Schneider BMXNOE0100 Ethernet communication modules or routed through Advantys STB distributed I/O islands, enabling remote fault visibility via SCADA or DCS platforms running on Modbus TCP or EtherNet/IP. In larger panel architectures, the relay output is often aggregated through Schneider XPSMC or XPSMCM safety relay modules to build SIL-rated motor protection loops compliant with IEC 62061.

At the HMI layer, fault states captured from the EOCR-SS-05RY7 are visualized on Schneider Magelis HMIGTO or HMISCU operator panels, providing maintenance teams with real-time overload history, trip counters, and phase imbalance trends. This closed-loop diagnostic chain — from the EOCR-SS-05RY7 relay output through the PLC, to the HMI display — dramatically reduces mean time to repair (MTTR) in high-density motor control centers.

For modular panel expansion, the EOCR-SS-05RY7 is dimensioned to fit standard 35 mm DIN rail assemblies alongside Schneider Zelio RSB relay bases, Linergy TB terminal blocks, and Acti9 iACT24 auxiliary contacts, ensuring consistent panel layout and simplified wiring across multi-motor drive cabinets. The 12-Month Warranty covers the complete unit from shipment date, supporting long-term maintenance planning and spare-parts governance across multi-site installations.

Manufacturing & Assembly Lines: In automotive body-shop conveyor systems and stamping press lines, the EOCR-SS-05RY7 protects 0.5 A-range motors driving belt conveyors, indexing tables, and pneumatic actuator solenoids. Its fast trip response prevents thermal damage during jam events, while the relay output feeds the line PLC to trigger upstream stop commands and downstream buffer alerts — maintaining production flow integrity without manual reset delays.

Power & Energy Infrastructure: In substation auxiliary systems and transformer cooling fan circuits, the EOCR-SS-05RY7 monitors small-motor loads critical to transformer thermal management. Phase-loss detection prevents single-phasing damage to cooling fans, and the relay output integrates with RTU digital inputs for remote alarm annunciation at the control room SCADA console — a key requirement in IEC 61850-compliant substation automation architectures.

Petrochemical & Process Industries: In pump and agitator motor circuits within ATEX-classified process areas, the EOCR-SS-05RY7 provides overload and phase-imbalance protection for motors driving chemical dosing pumps and heat exchanger circulation systems. Its compact DIN rail form factor allows installation inside pressurized control enclosures where panel space is constrained, and its relay output supports hardwired ESD (Emergency Shutdown) interlock loops.

Water Treatment & Utilities: In municipal water treatment plants, the EOCR-SS-05RY7 protects blower motors, chemical feed pump motors, and UV lamp ballast circuits. Integration with Schneider EcoStruxure Plant SCADA via Modbus-connected PLCs enables centralized motor health monitoring across distributed pump stations, reducing field inspection frequency and supporting predictive maintenance scheduling.

Mining & Metallurgy: In ore processing conveyor drives and crusher auxiliary motors, the EOCR-SS-05RY7 operates in high-vibration, high-dust environments where thermal overload events are frequent. Its solid-state sensing eliminates mechanical wear points, and the RY7 relay output provides a hardwired trip signal to the drive control panel independent of network availability — ensuring protection continuity even during communication faults.

Q1: Is the EOCR-SS-05RY7 compatible with Schneider TeSys D contactors and Modicon PLC digital input modules? Yes. The RY7 relay output (1 NO + 1 NC) is electrically compatible with TeSys D contactor coil circuits (LC1D09–LC1D38) and with Modicon BMX DDI series 24 V DC digital input cards. The relay contact rating supports direct coil interruption without auxiliary relays, simplifying panel wiring and reducing component count. Confirm coil voltage and contact current ratings against your specific contactor model before final wiring.

Q2: Can the EOCR-SS-05RY7 be integrated into a redundant motor protection architecture? Yes. In redundant protection designs, the EOCR-SS-05RY7 relay output is typically wired in series with a Schneider XPSMC or XPSMCM safety relay to form a dual-channel protection loop. The safety relay monitors the EOCR-SS-05RY7 contact state and provides SIL 2-rated trip output to the motor contactor. This architecture is commonly applied in process industries where motor failure could trigger a safety instrumented function (SIF) under IEC 61511.

Q3: What is the warranty coverage and spare-parts availability for the EOCR-SS-05RY7? The EOCR-SS-05RY7 carries a 12-Month Warranty from the date of shipment, covering manufacturing defects and functional failures under normal operating conditions. NANKMOS maintains in-stock inventory of EOCR-SS series relays to support rapid replacement and minimize unplanned downtime. Each unit undergoes pre-shipment functional testing including relay output verification, trip-class confirmation, and supply voltage check before dispatch.