Motor protection circuit breaker, 1 A, CLASS 10 — SIRIUS 3RV1021
It carries a rated continuous current of 1 A and a CLASS 10 trip characteristic, meaning it will trip within 10 seconds at 7.2× the current setting — fast enough to protect standard induction motors during locked-rotor conditions without nuisance tripping on normal starts. Ground fault detection is not included — that requires an external module or a separate ground-fault relay.
Any mounting position is allowed, so vertical or horizontal rail orientation is fine. Dimensions: 45 mm wide × 97 mm high × 96 mm deep. Front face is IP20 — finger-safe but not washdown-rated. Suitable for enclosed panels only; not for outdoor or wet-area mounting without an additional enclosure.
Main circuit terminals are screw-type. Accepts solid or stranded conductors: 2× (1 … 2.5 mm²) or 2× (2.5 … 6 mm²) per terminal. AWG equivalents: 2× (14 … 10). Finely stranded conductors with core-end processing are also supported. No auxiliary contacts are included on this variant — an auxiliary switch block can be added if needed.
Environmental and endurance ratings
Maximum operating altitude: 2,000 m. Shock resistance: 25 g / 11 ms. Mechanical endurance of main contacts: 100,000 operations typical. This matters for thermal management inside a sealed enclosure — account for the heat when sizing ventilation or cooling. Surge voltage resistance rated at 6,000 V — consistent with IEC 60947-2 overvoltage category III for industrial panels.
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