The 3RF3340-1BA22 is a 1-pole SIRIUS 3RF33 solid-state contactor rated 20 A at 40 °C in AC-15 duty — that's the switching category for electromagnetic loads (contactors, solenoids, brakes), not resistive heating. Control supply accepts 24-230 V AC across the coil terminals, with instantaneous switching — no zero-cross or soft-start logic inside this variant. Screw terminals for both power and control wiring.
Panel integration — footprint and mounting
Packaged dimensions 105 x 27 x 122 mm (L x W x H). The 27 mm width occupies one slot in a multi-contactor bank; plan for adequate airflow between units when derating above 40 °C. Screw terminals accept up to 4 mm² stranded or solid wire.