The CR1F1854N7 is a Schneider Electric TeSys F magnetic contactor, a latching (bistable) 4-pole device rated for 185 A AC-1 duty at up to 40 °C ambient. The control coil is wound for 415 V AC 50/60 Hz, with a latching consumption of 1750 VA and an unlatching consumption of 8 VA AC 50/60 Hz. The rated operational voltage for the power circuit is 1000 V AC and 1000 V DC. The conventional free-air thermal current (Ith) is 275 A at 40 °C. Rated breaking capacity at 220...440 V is 1800 A for the power circuit.
The 185 A AC-1 rating covers resistive and lightly inductive loads. The 275 A Ith is the thermal current the contactor can carry continuously in free air. The latching (bistable) coil holds its state without continuous power, consuming 11 VA DC unlatching and 1600 VA AC 50/60 Hz latching. The operating time is 35...40 ms for latching and 50...100 ms for unlatching. Mechanical durability is rated at 1,000,000 cycles, with a maximum operating rate of 120 cycles per minute at 40 °C. The associated fuse ratings for the power circuit are 200 A aM, 315 A BS88, or 315 A gG — this is the coordination guide for short-circuit protection, not the continuous load rating.
Deployment context
The contactor measures 305 mm high by 208.5 mm wide by 181 mm deep. It mounts on a panel or DIN rail within an enclosure. The operating position tolerance is ±5° from vertical. The power pole contact composition is 4 NO (normally open). The protective treatment is TH (tropicalized) for humid environments. The rated insulation voltage (Ui) for the control circuit is 1000 V conforming to IEC 60947-4 and BS 775, and 1500 V conforming to VDE 0110 group C.