Technical Parameters Parameter Specification Series ABB EF200 Series (Residual Current Monitoring Relays) Product Type Residual Current Relay / Earth Fault Relay Order Code EF205-210 Rated Residual Operating Current (IΔn) 100 mA (as indicated by the "-210" suffix) Residual Current Type Type A (for sinusoidal AC and pulsating DC residual currents) Rated Operational Voltage (Aux Supply - Ue) Typically 230V AC (must verify, some models are line-powered from the monitored circuit or have separate supply terminals). Auxiliary Supply Voltage Range Common range: 230V AC ±10%, 50/60 Hz. (Some versions may support 24-240V AC/DC). Crucial to check datasheet. Output Contact 1 Changeover (SPDT) Relay Contact for signaling or triggering an external shunt trip release. Contact Rating Typically 250V AC, 5A (sufficient to energize a standard shunt trip coil). Operating Time at IΔn < 0.3 seconds (Standard for Type A). Trip Delay Usually instantaneous, but some models may have a small fixed or adjustable delay. Test Function Manual test button to verify functionality by simulating a residual current. Status Indication LED indicator (often red/green) to show "Power ON" and "Tripped" status. Mounting Snap-on mounting on 35mm DIN Rail. Module Width 1 Module (18mm) or 2 Modules, depending on design. Connection Terminals Screw terminals. Terminals for: Auxiliary Power (L, N), Signal Output, and connections to the external Core Balance Current Transformer (CBCT) or internal sensing for direct connection models. Standards Compliance IEC/EN 61008-1, IEC/EN 61009-1 (in conjunction with the associated circuit breaker), IEC/EN 60947-2 Annex M. Ambient Temperature -25°C to +60°C (Operation)