The CR1F150L7 is a TeSys F magnetic latching contactor from Schneider Electric, configured as 3-pole normally open (3 NO) and rated for a 208 V AC/DC control circuit. It's designed for motor control and resistive load switching, with utilisation categories covering AC-1, AC-3, and AC-4 duty. The latching mechanism holds the main contacts closed without continuous coil power — the coil draws 1260 VA during the latching pulse and only 10 VA during the unlatching pulse, which cuts heat buildup in the panel.
Rated operational current (Ie) is 150 A at AC-4 duty under 440 V, with a maximum of 250 A at AC-1 for resistive loads. Rated breaking capacity reaches 1500 A at 220–440 V, 1200 A at 500 V, and 450 A at 1000 V, which tells you the contactor can clear a fault without welding its own contacts. The rated short-time withstand current (Icw) is 1200 A for up to 10 seconds, giving upstream protection devices time to operate. Operating time is 35–40 ms for latching and 50–100 ms for unlatching — fast enough for most motor-start sequences but not for high-speed jogging. The control circuit voltage limits are 0.85 to 1.1 times Uc for both latching and unlatching, so a 208 V coil will reliably pick up and drop out between about 177 V and 229 V.
Integration notes
The contactor measures 6.7 in deep by 6.4 in wide by 6.7 in tall, so plan for a panel depth of at least 8 in to allow wiring clearance. Connections accept lugs, ring terminals, or bars up to 120 mm² per pole, with a tightening torque of 159.3 lbf·in (18 N·m). The 3-pole NO configuration is straightforward for three-phase motor circuits — just watch the power dissipation: 6 W per pole under AC-3 duty, 18 W per pole under AC-1. That adds up inside a sealed enclosure.