Turck MS1-33EX0-R Intrinsically Safe Switching Amplifier

The Turck MS1-33EX0-R Intrinsically Safe Switching Amplifier is a 3-channel, NAMUR-compatible interface that provides three galvanically isolated relay outputs for hazardous-area sensor interfacing, enabling safe transmission between NAMUR sensors and non-hazardous control circuits in process plants. It accepts a universal supply of 20-250 VAC or 20-125 VDC (40-70 Hz) with power consumption ≤ 3 W, and on the input side supports NAMUR sensors, dry contacts, and potential-free contacts with 8 VDC nominal input and 8 mA nominal current (switching threshold 1.55 mA) per EN 60947-5-6. Each of the three relay outputs switches up to 250 VAC or 120 VDC, up to 4 A per output, and up to 1000 VA / 60 W per output, with NO/NC configuration selectable. The device provides galvanic isolation between input, output, and supply, and is certified for hazardous areas (ATEX II (1) GD, [Ex ia] IIC) with SIL 2 capability. Mount it on a DIN rail and expect IP20 protection over an operating temperature range from -25°C to +60°C in industrial hazardous-area and process-control applications such as refinery controls, chemical processing, burner management, tank monitoring, mining, and PLC/DCS panels requiring intrinsically safe NAMUR interfacing. Common replacements include TURCK IM1-33EX-R, MK13-33EX0-R, and MS1-22EX0-R. Ident number 5313102; Product type Multi-Safe Switching Amplifier; Product series Multi-Safe Series.