Parameters Category Parameter Specification for M3SS2-10B General Product Type Modular, Non-Illuminated Push Button Operator (Actuator) Series M3S (System M3S) - Enhanced Mid-Size Series Assembly Type Front Operator Module Mechanical Design Actuator Type Flush Push Button Actuator Diameter 16 mm (Standard "10" series) Actuator Color/Material Black (B), High-strength Thermoplastic (PA) Front Bezel/Ring Stainless Steel AISI 316 (Standard) Mounting Method Tool-less snap-in into M3S contact block. Operational Action Type Momentary (specific make/break defined by contact block). Operating Force Approx. 4 - 6 N Travel ~3 mm (short, positive) Mechanical Life > 10 million operations Environmental & Sealing Protection Degree (IP) IP66, IP67, IP69K (when properly assembled with seal & enclosure) Hazardous Area Certification Suitable for ATEX/IECEx: Ex d IIC T6 Gb / Ex e IIC T6 Gb / Ex tb IIIC T80°C Db (as part of full M3S certified assembly). Corrosion Resistance Very High (Stainless Steel 316 + chemical-resistant plastic). Operating Temperature -40°C to +80°C (ambient) Cleaning/Steam Resistance Yes (IP69K rating for high-pressure, high-temperature washdown). Compatibility & Assembly Required Contact Block ABB M3S Series Contact Block (e.g., M3S-CB1A11 for 1NO+1NC). Required Sealing Integrated or specific M3S sealing ring. Required Enclosure ABB M3S Certified Enclosure for full ratings. Panel Cut-out Diameter 16.5 mm (typical). Standards & Approvals Compliance Standards IEC/EN 60947-5-1, IEC 60529 (IP). Hazardous Area: IEC/EN 60079-0, 60079-1, 60079-7, 60079-31. Industry Approvals CE, cULus, ATEX, IECEx, GL (Marine), others.