Siemens SIRIUS 3RT2024-1AF04 Power Contactor 12A, 5.5kW, 110V AC Coil, Size S0, 3-Pole Motor Switching Original Brand New

Overview

The Siemens 3RT2024-1AF04 Power Contactor from the SIRIUS 3RT2 series is a compact and high-performance switching device engineered for reliably controlling three-phase motors and other loads. Designed as part of the modular SIRIUS system, this 3-pole contactor (Size S0) is rated for a maximum operational current of 12 A (AC-3e/AC-3) and a power rating of 5.5 kW at 400 V. It features an 110 V AC, 50 Hz control coil voltage and comes standard with a robust built-in 2 NO + 2 NC auxiliary switch block, which is removable for flexibility. The reliable screw terminal connections ensure fast, secure, and maintenance-friendly wiring.

Function

The Siemens 3RT2024-1AF04 functions as an electromechanical switch that closes or opens the main power circuit to a load (typically an electric motor) when the control coil is energized with 110 V AC. Its primary functions include:

1. Motor Switching: Safely starting and stopping 3-phase AC motors up to 5.5 kW
2. Load Control: Switching resistive or inductive loads in industrial automation systems.
3. Control Circuit Feedback: The integrated 2 NO + 2 NC auxiliary contacts provide electrical isolation for signaling, interlocking, and status feedback to the control system (like a PLC or control panel).

Benefit

• Compact Design (Size S0): Saves space within control cabinets without compromising performance.
• High Reliability: Engineered with Siemens’ SIRIUS quality for a long mechanical and electrical service life, minimizing downtime.
• System Integration: Part of the modular SIRIUS system, allowing easy and quick combination with overload relays (e.g., SIRIUS 3RU2) and other accessories to form a complete motor starter.
• Flexible Wiring: Secure and simple wiring via robust screw terminals for both the main and auxiliary circuits.
• Versatile Auxiliary Contacts: The built-in and removable 2 NO + 2  NC auxiliary switch block offers comprehensive control circuit options right out of the box.