3RT20281BB443MA0

Siemens 3RT2028-1BB44-3MA0 AC Contactor, Size S0, Screw Terminal
Siemens 3RT2028-1BB44-3MA0 AC Contactor, Size S0, Screw Terminal

Siemens 3RT2028-1BB44-3MA0 AC contactor, SIRIUS 3RT20 series, Size S0, 3 poles, AC-3 rated current 38A, 18.5kW (400V), control voltage 24V DC, with 2NO+2NC auxiliary contacts, screw terminal wiring.

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Siemens 3RT2028-1BB44-3MA0 AC Contactor, Size S0, Screw Terminal
Product Positioning

The Siemens 3RT2028-1BB44-3MA0 AC contactor belongs to the SIRIUS 3RT20 series, Size S0, 3-pole design, AC-3 rated current 38A, 18.5kW (400V), suitable for integrated starting and monitoring of small motors. The Siemens 3RT2028-1BB44-3MA0 controls at 24V DC, is equipped with a 2NO+2NC fixed auxiliary contact group, uses screw terminal wiring, and is compact in size, weighing only 0.662 kg.

Core Product Advantages and Features
Size S0, 3-pole main circuit
AC-3 rated current 38A, 18.5kW (400V), suitable for small motor control.
2NO+2NC fixed auxiliary contacts
The auxiliary contacts are built-in and non-removable, simplifying wiring and maintenance.
24V DC control voltage
The low-voltage coil design is suitable for integration with PLCs and control panels.
Lightweight design of screw terminals
Weighing only 0.662kg, it is suitable for installation in control boxes with limited space.
project Specification
Product Series SIRIUS 3RT20
Size Specifications Size S0
Extreme number 3 poles
AC-3 rated current (400V) 38 A
AC-3 Rated Power (400V) 18.5 kW
Control voltage 24V DC
Auxiliary contact configuration 2NO+2NC (fixed type)
Wiring method Screw terminals
weight 0.662 kg
External dimensions (width × height × depth) 54×92×159 mm

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