Leuze MSI‑SR5B‑01 | Safety Relay | Screw Terminals | Dual‑Channel | SIL 3 / PL e Overview The Leuze MSI‑SR5B‑01 is a high-integrity dual-channel safety relay designed for use in safety circuits involving emergency stop devices, safety switches, and optoelectronic protective devices (AOPDs). It meets SIL 3 and PL e standards, making it ideal for safety-critical applications across various industrial environments. With screw terminal connections and both manual and automatic restart capabilities, it offers flexibility, ease of installation, and dependable protection. Key Features Safety certifications: SIL 3 (IEC 61508), SILCL 3 (EN 62061), PL e (ISO 13849‑1), Cat. 4 Supports 2-channel inputs for E‑Stops, light curtains, and safety doors 2 safety outputs (normally open), relay-based Reset modes: manual and automatic Diagnostic LEDs for power, channel, and reset status Compact housing with screw-type terminal block Mounting: DIN rail compatible Technical Specifications Catalog Number: 547952 Input Voltage: 24 V DC (±20%) Inputs: 2 safety channels (type 2/3/4 AOPD compatible) Safety Outputs: 2 NO contacts (relay), 250 V AC / 6 A Reset Delay: Auto 350 ms / Manual 50 ms Internal Power Consumption: Max. 4.8 W Terminal Type: Screw terminals (16-pin, pluggable) Protection Class: IP20 (terminals), IP40 (housing) Operating Temperature: 0 °C to +55 °C Storage Temperature: –25 °C to +70 °C Dimensions: 22.5 × 99 × 114 mm Weight: Approx. 170 g Standards Compliance: IEC 61508, EN 62061, ISO 13849‑1, UL Applications Emergency stop circuits Safety door and guard interlocks Light curtain and safety sensor monitoring Industrial automation and machine safety systems OEM safety system integration Why Choose the MSI‑SR5B‑01 Certified for the highest functional safety standards Reliable dual-channel input monitoring Flexible reset options for different safety strategies Fast and simple DIN-rail installation Long service life and robust design Order Now The Leuze MSI‑SR5B‑01 safety relay (Part no. 547952) is available and ships worldwide.
