Siemens 3RT2015-1BB41 Power Contactor 3NO 3 kW 24 V DC 7 A with Auxiliary Contact

The Siemens 3RT2015-1BB41 power contactor is engineered for reliable electrical switching and circuit management in various industrial and automation environments. Designed to handle standard operational demands, this device incorporates three normally open main contacts, a 3 kW power rating, a 24 V DC control voltage, and a 7 A operational current alongside an integrated auxiliary contact. Built into a compact size S00 housing, it integrates seamlessly into control panels and motor control systems, ensuring efficient performance and high operational reliability.

Advantages

This power contactor offers dependable electrical switching performance suitable for demanding industrial settings. Its compact dimensions allow for space-saving installation within standard control cabinets and automation panels. The inclusion of an integrated auxiliary contact enhances its capability for feedback signaling and control logic integration. Operating on a low-voltage 24 V DC control signal ensures safe and standardized interaction with modern automation hardware.

Suitable for

• Motor control and protection systems
• Industrial automation and control panel building
• Switching resistive and inductive electrical loads
• Low-voltage control circuit integration requiring auxiliary feedback

When it may not be suitable

This device is not designed for residential applications or environments requiring alternating current control voltages. It is also unsuitable for heavy-duty industrial loads that exceed its 3 kW power rating and 7 A operational current limits.

Key specifications

• 3 normally open main contacts
• 3 kW power rating
• 24 V DC control voltage
• 7 A operational current
• Integrated auxiliary contact
• Size S00 compact design
• Device height of 58 mm

How to use

Mount the contactor securely onto a standard mounting rail within a suitable electrical enclosure or control panel. Connect the main power circuit conductors to the main terminals while ensuring that terminal screws are tightened securely to the manufacturer's specified torque. Connect the 24 V DC control voltage source to the designated coil terminals. Integrate the auxiliary contact into your control or signaling circuit according to your specific system schematic. Verify all wiring connections for correctness and safety before energizing the system.

What to consider before purchase

• Verify that your control circuit voltage matches the 24 V DC specification of the device
• Check that the operational current of 7 A and power rating of 3 kW meet your load requirements
• Ensure physical space within your control panel accommodates the 58 mm height and S00 dimensions
• Confirm whether an integrated auxiliary contact meets your feedback and interlocking needs

Always disconnect all power sources and verify zero voltage using appropriate testing equipment before installing, servicing, or modifying the contactor and associated wiring.