Siemens 3RT2024-1BB44 SIRIUS Power Contactor, 3-Pole, 12A, 5.5kW, 400V, 24V DC Coil, Size S0, 2 NO + 2 NC Original Brand New

Overview

The Siemens 3RT2024-1BB44 Power Contactor from the SIRIUS 3RT2 series is a compact and high-performance switching device engineered for controlling motors and other industrial loads. This 3-pole contactor is rated for 12 A (AC-3/AC-3e) and 5.5 kW at 400 V, making it ideal for a wide range of motor applications.

It operates with a low-power 24 V DC control coil and includes an integrated 2 NO + 2 NC removable auxiliary switch for easy monitoring and interlocking. Its size S0 designation and secure screw terminals ensure reliable and space-efficient integration into your control panel.

Benefit

• Compact & High Performance: Achieves high switching capacity in a small, space-saving S0 design.
• Reliable DC Operation: Features a low-power 24V DC coil for energy-efficient and reliable control.
• Enhanced Control: Includes a convenient removable auxiliary switch block with 2 NO + 2 NC contacts for flexible system integration and signalling.
• Easy Integration: Part of the globally recognized SIRIUS modular system, ensuring seamless coordination with overload relays and other components.
• Secure Wiring: Robust screw terminals on both the main and auxiliary circuits ensure secure, vibration-proof connections.
• Future-Ready: IE3/IE4-ready for current and future motor efficiency standards.

Function

The Siemens 3RT2024-1BB44 Power Contactor is primarily used for switching 3-phase AC motors and resistive loads. Its core function is to safely and reliably connect and disconnect power to the load, acting as an electrically controlled switch. The integrated auxiliary contacts provide a signal back to the control system, confirming the contactor’s state (open or closed), which is essential for interlocking and status indication.

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