Unidad de expansión de relé de seguridad Siemens Sirius 3TK2830-1AL20 4NO 230VAC
One basic unit may be connected to several expansion units. SIRIUS SAFETY RELAY WITH RELAY RELEASE. SIRIUS 3TK28 30 Expansion Unit. Safety relay expansion unit. We PROMISE we can make you happy if you give us a fair chan ce.