The Siemens 3TK2825-2BB40 is a SIRIUS 3TK28 series safety relay designed for monitoring safety circuits in industrial machinery, including emergency stop buttons, protective door switches, and safety mats. It operates on 24 V DC supply and provides 3 Normally Open (NO) safety outputs plus 2 Normally Closed (NC) signaling contacts, with spring-loaded (cage clamp) terminals for maintenance-free wiring.
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