The Siemens 3RV2711-1AD10 is a SIRIUS-brand circuit breaker in the Size S00 frame, designed for system protection per UL 489 and CSA C22.2 No. 5. The part is rated for a 0.3 kW motor at 230 V — a modest load, consistent with the Size S00 frame's typical role protecting smaller motors, control transformers, or branch circuits in a panel.
The screw terminals use M4 threads and require a Pozidriv size 2 screwdriver tip with a 5–6 mm shaft diameter. These are standard panel-building specs — no special tooling needed.
Fuse backup coordination
When the available fault current exceeds the breaker's interrupting rating, or when selective coordination is required upstream, the 3RV2711-1AD10 specifies maximum backup fuse ratings: 20 A gL/gG at 500 V, and 16 A gL/gG at 690 V. These are the fuse sizes that, when placed ahead of the breaker, ensure the breaker still clears a fault within its rated limits.
The part carries no ground-fault or phase-failure detection — it is a straight thermal-magnetic or electronic motor-protective circuit breaker. If your application requires those functions, you would need a different variant in the SIRIUS family or an external monitoring relay.
