Features:
- Switches three motor phases with one mechanically linked contact system.
- Uses a 24 V DC coil and one integrated normally open auxiliary contact.
- Applies a documented 7 A AC-3 rating to 3 kW motor duty at 400 V.
The coil circuit commands the armature while the three main poles carry the motor current.
The auxiliary contact follows the mechanism without carrying the motor load.
External overload and short-circuit protection complete the motor-starter branch around the contactor.
The Siemens 3RT2015-2BB41 SIRIUS 3RT2 S00 3-Pole Power Contactor may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 3RT2015-2BB41 SIRIUS 3RT2 S00 3-Pole Power Contactor Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Following motor power through the three linked contacts
- Line side: The incoming phases land on the three main line terminals.
- Linked motion: One armature closes or opens all three main poles together.
- Load side: The switched phases continue from the matching load terminals to the motor.
- Isolation state: With the coil de-energized, each main pole interrupts its phase path.
Connecting the 24 V DC command and auxiliary status path
- Coil input: The A1 and A2 circuit receives the documented 24 V DC control voltage.
- Magnetic action: Coil current pulls the armature into the operated position.
- Auxiliary state: The integrated NO contact closes with the mechanism for feedback or logic.
- Release: Loss of coil voltage opens the main and auxiliary paths.
Using spring-loaded terminals without stressing the conductors
- Conductor preparation: Strip length and conductor section follow the terminal data.
- Main circuit: Each phase conductor is seated in its assigned line or load terminal.
- Control circuit: Coil and auxiliary conductors remain separate from the power poles.
- Retention check: A pull test confirms that every spring clamp has captured the conductor.
Combining switching with independent motor protection
- Contactor role: The device starts and stops the motor on command.
- Overload role: A coordinated overload relay detects sustained motor overcurrent.
- Fault role: A fuse or breaker interrupts high short-circuit current.
- Selection basis: Motor power, utilization category and protective-device coordination are checked together.