The Siemens 3RF3340-1BA02 is a SIRIUS 3RF33 series solid-state contactor, 1-pole, rated for AC-15 duty at 20 A at 40 °C with a 24-230 V / 24 V DC control supply and instantaneous switching via screw terminals. This is the current-production variant — lifecycle status is active, so it remains a standard catalog line for new panels and as a direct spare for existing SIRIUS installations.
AC-15 rating is 20 A at 40 °C. This covers electromagnetic loads like contactor coils and solenoids.
Screw terminals for power and control, 1-pole form factor. The 105 x 27 x 122 mm package snaps onto standard DIN rail — occupies a single 27 mm module width, leaving room alongside other SIRIUS components in a common panel layout. Instantaneous switching (no zero-crossing delay) suits applications where the load must close immediately on control signal, such as safety circuits or fast valve actuation.