Motor protection circuit breaker for the cure recipe
The Siemens SIRIUS 3RV2011-0AA15 is a motor protection circuit breaker designed to handle the heat and fault currents a tire-curing press environment can throw at it. Trip Class 10 means it clears overloads within 10 seconds at 7.2× rated current — fast enough to protect a motor winding before the insulation degrades, even when the ambient temperature around the press is pushing 60 °C. The 100 kA interrupting capacity at 400 V AC is the number that matters for SCCR coordination: it safely breaks a bolted fault without cascading upstream, so a single motor branch fault doesn't take down the whole press PLC cabinet.
Snap-on DIN rail and panel fit
Mounts via screw and snap-on onto 35 mm DIN rail per DIN EN 60715. The 45 mm width and 97 mm depth mean it occupies one standard modular slot — no surprises when you're laying out a retrofit panel for an existing press line. Any mounting position is allowed, so you can orient it to clear the gland plate or a neighboring contactor.
Phase failure detection and wiring
Built-in phase failure detection is a hard requirement for three-phase motor protection: if one phase drops, the breaker trips before the motor single-phases and cooks. Main contacts use M3 screw terminals; the wire range accepts 2x (0.5 to 1.5 mm²) solid or stranded, or 2x (0.75 to 2.5 mm²). That covers standard motor feeder cables up to 2.5 mm² without needing an adapter.