Safety Technology International MA-S21DSC10 Safety Interlock Switch

STI MA-S21DSC10 Safety Interlock Switch is a stainless-steel, non-contact magnetic interlock with a 10 m pre-wired cable, designed for machine guarding on enclosures and access doors. It provides two normally closed (NC) contacts and one normally open (NO) contact, enabling reliable interruption of a safety circuit when a guard is opened. The compact housing measures 60.0 × 33.0 mm and supports a wide operating range from -10 °C to 125 °C, with a durability rating of at least one million actuations. This model ships with a 10 m pre-wired cable for flexible installation and meets multiple industrial standards, including EN1088, EN292, and EN60204-1, with CE, UL, and C-UL listings. Typical applications include safeguarding doors on industrial machinery, safety enclosures, conveyors, and robotics cells where opening a guard must promptly stop the equipment. The MA-S series’ magnetic actuation provides reliable sensing with a robust stainless-steel housing designed for harsh factory environments.