Part identity and core ratings
SIRIUS 3RT2027-1FB40 is a power contactor in the S0 frame size, with a 24 V DC magnet coil terminated via screw-type terminals and includes an auxiliary switch. Arcing time typically 10 ms; drop-out time 15–18 ms at DC.
Dimensions and mounting
The contactor measures 45 mm wide, 85 mm high, and 107 mm deep – the 107 mm depth is key for panel back-panel clearance. Mounts via screw or snap-on onto 35 mm DIN rail per EN 60715. Mounting position flexibility allows ±180° rotation on vertical surfaces and ±22.5° tilt. Minimum clearances: 10 mm upward, 10 mm downwards, 6 mm at the sides.