Siemens 3TK28212CB30 Inc. - Extech Division lifetime-lubricated precision ball bearings are

lifetime-lubricated precision ball bearings are preloaded for minimum end play and rated for continuous use up to 6000 RPM

Fixing by screw or on omega rail

silver cadmium oxide contacts which provide excellent conductivity and superior resistance to welding and arc erosion

Protection degree IP67

Siemens 3TK28212CB30 Inc. - Extech Division lifetime-lubricated precision ball bearings areProduct Attribute Attribute Value Series 3TK Series UPC Code 4011209445314 Overview SIRIUS 3TK28 Safety Relay, Basic Units The SIRIUS safety relays with relay enabling circuits feature positively driven NO and NC contacts, in pairs, which means if one of the contacts welds, then the other contact is used to shut down the circuit. A positively driven feedback signal contact (NC contact) detects the fault of the defective NO contact.