Siemens 3RT2015-2BB42-1AA0 Power Contactor 7A, 3kW, 24V DC Original Brand New

Overview

The Siemens 3RT2015-2BB42-1AA0 is a highly efficient and compact SIRIUS 3RT2 Power Contactor designed for switching motors and general-purpose loads. This specific model is a 3-pole device with a rated operational current of 7 A (AC-3e/AC-3) and a power rating of 3 kW at 400 V. It features a 24 V DC control coil for reliable operation and incorporates one integrated Normally Closed (1NC) auxiliary contact. Utilizing spring-loaded terminal technology, this Size S00 contactor offers fast, vibration-proof, and maintenance-free wiring, perfect for modern industrial control panels.

Technical Specification

• Product No.: 3RT2015-2BB42-1AA0
• Series: SIRIUS 3RT20
• Contactor Type: Power Contactor for AC switching
• Poles: 3-pole
• Rated Operational Current (AC-3e/AC-3, 400 V): 7 A
• Rated Operational Power (AC-3, 400 V): 3 kW
• Control Supply Voltage (Coil): 24 V DC
• Auxiliary Contacts: 1 NC (Integrated)
• Terminal Type: Spring-loaded terminal (Spring-type)
• Size: S00
• Mounting Position: Upright mounting position

Benefits & Advantages

• Space-Saving Design (Size S00): Extremely compact footprint for high-density panel installations.
• Fast & Secure Wiring: The innovative spring-loaded terminal connection ensures reliable, vibration-proof, and quick wiring without the need for periodic re-tightening of screws.
• Energy Efficiency: The 24 V DC control coil is typically designed for low power consumption, reducing overall operating costs.
• High Reliability: Part of the trusted Siemens SIRIUS modular system, ensuring long mechanical and electrical service life.
• Integrated Auxiliary Contact: Includes one built-in 1NC auxiliary contact for feedback or interlocking circuits, saving the cost and space of an external block.

Function & Application

The 3RT2015-2BB42-1AA0 functions as an electromechanical switching device used to safely and remotely control electric motors, lighting systems, and other industrial loads. Its primary applications include:

1. Motor Control: Switching small 3kW motors (e.g., pumps, fans, conveyors) in industrial machinery.
2. Automation Systems: Used in conjunction with PLCs and control relays (often using a 24 V DC signal) for general automation tasks.
3. Heating & Lighting Circuits: Reliable switching of high-current loads in building automation and industrial heating.

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