3RT2028-1BF40
Siemens 3RT2028-1BF40 standard contactor, 3-pole, AC-3 rated current 38A, 18.5kW (400V), control voltage DC 110V, with 1NO+1NC auxiliary contacts, screw terminals, rated insulation voltage 690V.
Product Positioning
The Siemens 3RT2028-1BF40 is a size S0, 3-pole standard contactor from the SIRIUS 3RT20 series. It has an AC-3 rated current of 38A and a rated current of 18.5kW (400V), suitable for direct starting and circuit switching of general motors. This model has a DC 110V coil, making it suitable for DC control panels or battery backup control systems. It features screw terminals and 1NO+1NC auxiliary contacts, providing clear feedback on the operating status.
Core Product Advantages and Features
Size S0, 3-pole main circuit
AC-3 rated current 38A, 18.5kW (400V), suitable for general motor start-stop control.
DC 110V coil
Suitable for use with DC control panels or DC control systems with battery backup.
Screw terminals
The wiring is reliable and conforms to the existing construction practices of most distribution boxes.
1NO+1NC auxiliary contact
The feedback of the main contact's action status facilitates the integration of interlocking protection and monitoring.
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3RT2028-1BB40
Siemens 3RT2028-1BB40 standard contactor, 3-pole, AC-3 rated current 38A, 18.5kW (400V), control voltage DC 24V, with 1NO+1NC auxiliary contacts, screw terminals, rated insulation voltage 690V.