The CR1F1504FZ7 is a Schneider Electric TeSys F magnetic latching contactor. Rated operational current (Ie) is 150 A at 440 V in AC-4 duty, which covers severe plugging and inching applications. For AC-3 motor starting, the conventional free air thermal current (Ith) is 250 A at 40 °C. Motor power ratings span 40 kW at 220-230 V up to 100 kW at 690 V AC. The latching mechanism holds the main poles closed without continuous coil power — average consumption is 500 W DC during the latching pulse and only 15 W DC for the unlatching pulse. This makes it suited for applications where coil heating or standby power draw is a concern.
AC-4 involves making and breaking currents under load at motor standstill, which stresses contacts more than AC-3. If your application involves frequent reversing or inching, this is the rating that governs contact life. Rated insulation voltage (Ui) is 1000 V per IEC 60947-4-1 and BS 775, with an impulse withstand voltage (Uimp) of 8 kV. This means the contactor can be used in 690 V line-to-line systems with adequate clearance for surge events. Short-time withstand current (Icw) is 1200 A for 1 second at 40 °C, which supports coordination with upstream fuses or circuit breakers rated up to 250 A gG or aM. The rated breaking capacity at 440 V is 1500 A. Mechanical durability is rated at 1 million cycles. Maximum operating rate is 120 cycles per hour at 40 °C. These figures set the expected service life in high-duty applications.
Dimensions are 6.7 x 7.9 x 6.7 inches (171 x 201.5 x 170 mm). The contactor uses lugs, ring terminals, or busbar connections accepting up to 120 mm² cable. Tightening torque is 159.3 lbf·in (18 N·m) on the main power terminals. Ambient operating temperature range is -15 to 70 °C, storage -60 to 80 °C. Protective treatment is TH (tropicalized) for humid environments.