Siemens 3UG3521-1AC48-0AA1

DISCONTINUED TYPE MONITORING RELAY, 22.5MM, OVER OR UNDERCURRENT MONIT., 2...500MA, AC/DC, 1 CO CONTACT, DC 24V,W/O ELEC. ISOLATION, SCREW CONNECTION REPLACEMENT TYPE: 3UG4621-1AW30 (3UG4621-1AA30 CAN BE USED IF WIRED CORRECTLY)