Siemens 3RT2023-2FB44-3MA0 Power Contactor 3P 9A 4kW 24VDC

The Siemens 3RT2023-2FB44-3MA0 is a SIRIUS 3RT2 3-pole power contactor rated at 9 A and 4 kW at 400 V (AC-3/AC-3e), operated by a 24 V DC coil with a plugged-in diode combination for surge suppression. It is supplied in size S0 with spring-loaded terminals, a captive auxiliary switch, and 2 NO + 2 NC auxiliary contacts.

Technical specifications:

• MLFB: 3RT2023-2FB44-3MA0
• Manufacturer: Siemens
• Product line: SIRIUS
• Product type: Power contactor (3RT2)
• Size: S0
• Main poles: 3
• Rated current AC-3 / AC-3e: 9 A (400 V, 500 V, 690 V)
• Rated current AC-1: 40 A at 400 V, 40°C
• Rated operating power AC-3: 4 kW at 400 V; 7.5 kW at 690 V
• Maximum operating voltage (main circuit): 690 V
• Insulation voltage (main and auxiliary circuit): 690 V
• Surge voltage resistance: 6 kV
• Control supply voltage: 24 V DC
• Coil operating range: 0.8 - 1.1 x rated voltage
• Surge suppressor: plugged-in diode combination
• Auxiliary contacts: 2 NO + 2 NC
• Terminal type: spring-loaded
• Mechanical service life: 10,000,000 operating cycles
• Operating frequency AC-3: max 1,000 switchings/h
• Ambient temperature (operation): -25 to +60°C
• Ambient temperature (storage): -55 to +80°C
• Installation altitude: max 2,000 m
• Net weight: 0.699 kg

Features and benefits:

• Spring-loaded terminals enable fast, tool-free wiring and simplified installation
• Plugged-in diode combination provides integrated coil surge suppression without external components
• Mechanical service life of 10,000,000 operating cycles supports intensive-duty applications
• Wide ambient operating range of -25 to +60°C for use in demanding environments
• Captive auxiliary switch with 2 NO + 2 NC contacts integrated in compact S0 footprint

Applications:

• Motor control for 3-phase drives up to 4 kW at 400 V (AC-3/AC-3e duty)
• Load switching up to 40 A at 400 V in AC-1 duty
• Lighting circuit switching rated to AC-6a up to 690 V
• Motor starter assemblies in control panels requiring 24 V DC coil voltage

Compliant with EN 60947-1. Part of the Siemens SIRIUS 3RT2 range.

Also known as: Siemens 3RT2023-2FB44-3MA0, SIRIUS 3RT2 power contactor 9A 24VDC S0.