SIRIUS Size S00 overload relay — spring terminals, DIN-rail mount
The 3RU2916-3AC01 is a Siemens SIRIUS overload relay in the Size S00 frame, designed for individual (stand-alone) mounting. It provides motor protection for the 3RU21, 3RB30, 3RB31, and 3RR2 relay families in the same size class. Fastening is by screw or snap-on onto 35 mm DIN rail, which means it integrates into standard control panels without special adapters.
Terminal wiring — spring-loaded main circuit
The main current circuit uses spring-loaded terminals, accepting 1x solid wire from 0.5 to 4 mm² (20 to 12 AWG) and 1x stranded wire from 0.5 to 4 mm². Finely stranded wire with core end processing is supported from 0.5 to 2.5 mm². No auxiliary circuit terminals are fitted on this variant — the auxiliary circuit connection is listed as '--' in the specification.
Environmental limits and compliance
Operating temperature range is -20 to +70 °C; storage range is -50 to +80 °C. The substance prohibitance date is 10/01/2009, indicating RoHS compliance from that date.