Siemens SIRIUS 3RT2023-1BB40 Power Contactor, 4 kW, 9 A, 24 V AC, 3-Pole, Size S0

The Siemens SIRIUS 3RT2023-1BB40 is a high-performance power contactor designed for reliable switching of motors and other loads in industrial applications. With a compact size S0 and 3-pole configuration, it offers efficient control for AC-3 utilization category up to 4 kW at 400 V. The integrated auxiliary contacts (1 NO + 1 NC) provide flexibility for control circuits, while the screw terminals ensure secure and easy wiring. This contactor is built for durability with electrical endurance of 10 million operating cycles and mechanical endurance of 30 million cycles, making it ideal for demanding environments.

Advantages

• Compact design saves space in control cabinets
• High switching capacity for motor loads
• Long electrical and mechanical life reduces maintenance
• Integrated auxiliary contacts eliminate need for additional components
• Wide operating temperature range (-25 to +60 °C) for versatile use

Suitable for

• Motor starting and switching in industrial machinery
• Control of pumps, fans, conveyors, and compressors
• Automation systems in manufacturing and process industries
• Lighting and heating control in commercial buildings

Key specifications

• Product Type: Power Contactor
• Series: SIRIUS
• Model Size: S0
• Number of Poles: 3
• Utilization Category: AC-3
• Rated Operational Power (AC-3, 400 V): 4 kW
• Rated Operational Current (AC-3, 400 V): 9 A
• Rated Operational Voltage (Main Circuit): 690 V
• Control Supply Voltage (Coil): 24 V AC
• Control Supply Frequency: 50/60 Hz
• Auxiliary Contacts: 1 NO + 1 NC (Integrated)
• Connection Type (Main Circuit): Screw Terminals
• Connection Type (Control Circuit): Screw Terminals
• Mounting Type: DIN Rail / Screw Mounting
• Electrical Endurance (AC-3): 10 Million Operating Cycles
• Mechanical Endurance: 30 Million Operating Cycles
• Operating Temperature Range: -25 to +60 °C
• Protection Class: IP20
• Rated Impulse Withstand Voltage: 6 kV
• Short-Circuit Protection (gG Fuse): 35 A

Recommendations

For optimal performance, pair this contactor with a suitable overload relay from the Siemens SIRIUS series. Ensure proper mounting and wiring according to the manufacturer's guidelines. Always verify compatibility with your specific application requirements.