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Siemens 3RT2028-1BB44-3MA0 38A DC Power Contactor

Siemens 3RT2028-1BB44-3MA0 3-Pole Power Contactor

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ManufacturerSiemens
Part number3RT2028-1BB44-3MA0
Type Power Contactor
AC-3e/AC-3 Rating 38 A
Power Rating 18.5 kW / 400 V
Poles 3
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24V DC coil 38A AC-3e/AC-3 rating 2 NO + 2 NC auxiliary contacts Captive auxiliary switch Size S0 Screw terminals

The Siemens 3RT2028-1BB44-3MA0 is a robust 3-pole power contactor rated for AC-3e/AC-3 duty. It handles up to 38A and 18.5 kW at 400V, featuring a 24V DC coil for control. This model is equipped with 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts, along with a captive auxiliary switch for added reliability. It's designed for demanding industrial environments and is part of the Siemens Sirius 3RT series.

This contactor is ideal for applications requiring DC coil operation, such as in battery-powered systems, specific automation tasks, or where DC control logic is used. Its 38A rating makes it suitable for controlling medium-sized motors and other inductive loads. The integrated captive auxiliary switch ensures consistent contact operation, while the absence of a retrofittable surge suppressor means it's designed for specific circuit conditions.

Find the Siemens 3RT2028-1BB44-3MA0 at Stanlo Automation. As a veteran-owned distributor of surplus industrial automation parts, we are committed to providing reliable components and exceptional service to keep your machinery operational and your projects on track.

TypePower Contactor
AC-3e/AC-3 Rating38 A
Power Rating18.5 kW / 400 V
Poles3
Coil Voltage24 V DC
Auxiliary Contacts2 NO + 2 NC
TerminalsScrew
SizeS0
Captive Auxiliary SwitchYes
Surge SuppressorNot retrofittable
Motor control
DC controlled automation
Industrial machinery
Control panels
Power distribution
Hazardous locations
Siemens Sirius 3RT Series Industrial control systems with 24V DC control voltage
Siemens 3RT2028 DC Contactor 3RT2028 Contactor 24V DC Siemens Sirius 3RT
Designed as a direct replacement for similar Siemens 3RT2028 models with 24V DC coils and specific auxiliary contact configurations. Verify exact specifications for compatibility.
Expert tip
The captive auxiliary switch ensures that the auxiliary contacts remain mechanically linked to the main power contacts, improving operational reliability.
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What is the coil voltage for the Siemens 3RT2028-1BB44-3MA0?
The Siemens 3RT2028-1BB44-3MA0 power contactor features a 24V DC coil. This makes it suitable for applications where DC control signals are utilized.