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Reliable Automation Control Component WSR-ES1-3O1C-S

The Weidmüller WSR-ES1-3O1C-S is a safety relay module designed to safely monitor emergency stop circuits and guard door switches in machinery. It features 3 enabling current paths (N/O contacts) and 1 feedback current path (N/C contact). The device is certified to SIL 3 according to IEC 61508 and achieves a Safe Failure Fraction (SFF) of 99% .

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Key Technical Parameters General & Ordering Data Type: WSR-ES1-3O1C-S Order No.: 2825510000 Version: Safety relay, emergency stop/guard door monitoring Housing: Black and yellow, 22.5 mm width Net Weight: 168 g Input (Power Supply) Connection: A1, A2 Rated Control Voltage: 24 V AC/DC (-15% / +10%) Current Consumption: ≤ 90 mA (at 24 V DC) / ≤ 240 mA (at 24 V AC) Response Time: ≤ 100 ms Output (Enabling Circuits) Connection: 13, 14 (NO1); 23, 24 (NO2); 33, 34 (NO3) Contact Design: 3 Normally Open (N/O) contacts Max. Switching Current: 5 A Max. Switching Capacity: AC-15: 5 A / 230 V; DC-13: 5 A / 24 V Turn-on Time: ≤ 300 ms Turn-off Time: ≤ 30 ms Output (Feedback Circuit) Connection: 41, 42 Contact Design: 1 Normally Closed (N/C) contact Max. Switching Current: 5 A Monitoring Circuit Connection: S11, S12, S21, S22 Safety & Reliability Safety Level: SIL 3 (IEC 61508) Hardware Fault Tolerance (HFT): 1 Safe Failure Fraction (SFF): 99% Probability of Dangerous Failure (PFH): 0.309 x 10⁻⁹ 1/h Standards: EN 60947-5-1, EN ISO 13849, IEC 61508, IEC 62061, EN 60204-1 Connection & Environment Connection Type: Screw connection Wire Cross-section: 0.2...4 mm² (AWG 24...12) Operating Temperature: -20 °C ... +60 °C Storage Temperature: -40 °C ... +85 °C Protection Degree: IP20 Dimensions Width x Height x Depth: 22.5 mm x 100 mm x 114 mm