Overview
The 3RT1015-1BB44-3MA0 is a Siemens 3-pole contactor, size S00, with a 3.3 W DC coil rated at 24 V DC. It mounts on a 35 mm DIN rail per DIN EN 50022 and carries an IP20 enclosure rating for in-cabinet installation.
Function & operation
The 3-pole contactor uses a 24 V DC coil drawing 3.3 W. Switching current depends on load type and voltage. The screw-type terminals accept 2x (0.5...1.5 mm²) solid or 2x (0.75...2.5 mm²) finely stranded wire, with a maximum of 2x (0.75...4 mm²). The auxiliary contact block provides 2x (20...16), 2x (18...14), and 1x 12 contacts. Short-circuit protection for the main circuit requires a 35 A gL/gG fuse (type 1 coordination), and for the auxiliary circuit a 10 A gL/gG fuse.
Applications
This contactor is suited for switching motors, resistive loads, and lighting circuits in industrial control panels, conveyor systems, pumps, and HVAC equipment. The 3-pole configuration covers three-phase motor starting and disconnection, while the DC coil allows direct integration with PLC or relay logic outputs without an AC interface.
Market & positioning
Within the Siemens IRC (Industrial Controls) portfolio the 3RT1015-1BB44-3MA0 belongs to the S00 frame size, the smallest in the 3RT series, intended for low-power motor loads and auxiliary switching. It competes with other S00 contactors but is distinguished by its 24 V DC coil and 3.3 W power consumption, making it a common choice for 24 V DC control systems in panel building.
Pricing & sourcing
The 3RT1015-1BB44-3MA0 is a current-production Siemens contactor. Confirm availability and pricing via RFQ.