SIRIUS 3RV1011-1JA20-ZW97 — Motor Protection Circuit Breaker, 10 A, CLASS 10
The Siemens SIRIUS 3RV1011-1JA20-ZW97 is a 3-pole motor protection circuit breaker rated for a continuous current of 10 A with a CLASS 10 trip characteristic, meaning it will trip within 10 seconds at 7.2× rated current — the standard thermal-magnetic curve for protecting standard induction motors during startup. Breaking capacity is 100 kA at 240 V AC, 50 kA at 400 V AC, 3 kA at 500 V AC, and 2 kA at 690 V AC — so at the common 400 V distribution level it handles fault currents up to 50 kA without needing an upstream current-limiting fuse for most installations. Rated power at 400 V is 4 kW, which sizes it for a 5.5 HP (approx.) motor at that voltage — a common fit for small conveyors, pumps, and fans in industrial control panels. Phase failure detection is built in, so the breaker will trip if one phase drops out — preventing single-phasing damage to the motor. No ground fault detection on this variant.
Mounting and Integration
Mounts via screw or snap-on onto 35 mm standard mounting rail per DIN EN 50022 — the standard DIN rail found in every industrial enclosure. Any mounting position is allowed, and zero clearance is required at the sides or rear, so it packs tight against adjacent devices. Dimensions are 45 mm wide, 90 mm high, 81 mm deep — a compact 45 mm footprint that fits two units per standard 100 mm DIN rail section. Main circuit connections are spring-loaded terminals accepting 2x (0.25... 2.5 mm²) solid or 2x (0.25... 1.5 mm²) finely stranded with ferrule — no screwdriver needed for termination, which speeds panel wiring. Front face is IP20 rated — touch-safe for the panel builder but not suitable for washdown environments; this is an enclosure-mounted device, not a standalone outdoor unit.
Environmental and Mechanical Ratings
Operating temperature range is -20 to +60 °C; storage and transport range is -50 to +80 °C — the wider storage limit governs handling and logistics, not running conditions. Shock resistance is 25g / 11 ms — suitable for installation on machinery subject to vibration, such as conveyor drives or compressor skids. Maximum operating altitude is 2 000 m without derating — fine for most industrial sites; above that, dielectric strength and thermal dissipation need to be checked against the installation standard. Mechanical endurance of the main contacts is typically 100 000 operations — a solid figure for a motor-starting device that cycles several times per hour. Maximum switching rate at AC-3 duty is 15 operations per hour — this is the thermal limit for the bimetal trip; higher rates would require a contactor for the switching and leave the breaker as backup protection only. Power dissipation at rated current in hot state is 9.25 W total, or 3.1 W per pole — relevant for enclosure thermal calculations when grouping multiple breakers.
Lifecycle and Sourcing
Surge voltage resistance is rated at 6 000 V — meeting the overvoltage category III requirements for industrial control panels per IEC 60947.