The CR1F4004GZ7 is a TeSys F magnetic latching contactor from Schneider Electric, configured as 4P (4 NO) with a 400 A rated operational current and a 127 V DC coil. This is a current-production part, so it's a straightforward BOM line item — no last-time-buy scramble needed.
The 400 A rating is under AC-4 duty at ≤ 440 V, which is the heavy lifting category for plugging and inching of motors — that's the number that governs real motor-switching applications, not the higher AC-1 resistive rating. The 127 V DC coil is a latching type, meaning it holds position without continuous power draw; the latching pulse consumes 500 W, the unlatching pulse 70 W. Operating time is 40…75 ms latching, 50…100 ms unlatching, so it's not a high-speed switching device but fine for motor starting and isolation. Rated breaking capacity is 4000 A at 220…440 V, dropping to 1200 A at 1000 V — that's the fault it can interrupt without welding contacts. The rated short-time withstand current (Icw) is 3600 A for up to 10 seconds at 40 °C, which gives selectivity headroom in a distribution panel. For fuse coordination, the associated fuse rating is 400 A aM or BS88/gG at ≤ 440 V.
This is a panel-mount contactor, not DIN-rail — it's sized for bolting into a switchboard or motor control center. Dimensions are 8.6 in deep, 10.3 in wide, 8.1 in high. Terminals accept lugs or ring terminals up to 150 mm², or two 30 x 5 mm bars. Tightening torque is 35 N·m on the power connections — that's substantial, so a torque wrench is expected.