Standards

IEC/EN 60947‑1, IEC/EN 60947‑4‑1, IEC/EN 60947‑5‑1 (auxiliary switches)

3RT144 contactors in size S3 are suitable for use in any climate. They are finger-safe according to IEC 60529.

The accessories and spare parts for the 3RT10 contactors can also be used here, see "Accessories and spare parts" в†’ "for SIRIUS 3RT1 Contactors and SIRIUS 3RH1 Contactor Relays".

The contactors are suitable for switching mixed loads in distribution systems (e.g. for supplying heaters, lamps, motors, PC power supply units) with p.f. > 8 according to IEC 60947‑4-1, test conditions for utilization category AC‑1.

For a general description of size S3, see "Power contactors for switching motors" в†’ "SIRIUS 3RT1 contactors, 3-pole up to 45 kW".