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Siemens 3RT2023-1DB44-3MA0 Contactor β€” 9A 24V DC Coil, Varistor, 2 NO + 2 NC

Siemens 3RT2023-1DB44-3MA0 3-pole contactor with 24V DC coil & varistor.

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ManufacturerSiemens
Part number3RT2023-1DB44-3MA0
Type Power Contactor
Manufacturer Siemens
Series 3RT20
Poles 3
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AC-3e/AC-3 rated 3-pole configuration 24V DC coil Integrated varistor for surge protection Enhanced auxiliary contacts (2 NO + 2 NC) Size S0

The Siemens 3RT2023-1DB44-3MA0 is a 3-pole power contactor for AC-3e/AC-3 applications, rated at 9A and 4kW at 400V. It features a 24V DC coil and includes a plugged-in varistor for surge suppression. This model comes with 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts and is a size S0.

This contactor is designed for applications where protection against voltage spikes is important, such as in environments with inductive loads or power fluctuations. It is ideal for motor control, automation, and power switching in industries like manufacturing, energy, and automation systems.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RT2023-1DB44-3MA0 to enhance the reliability of your automation systems. We provide access to quality surplus components, ensuring your equipment operates efficiently and with added protection against electrical transients.

TypePower Contactor
ManufacturerSiemens
Series3RT20
Poles3
AC-3e/AC-3 Current9 A
Power Rating4 kW @ 400 V
Coil Voltage24 V DC
Auxiliary Contacts2 NO + 2 NC
Terminal TypeScrew Terminal
SizeS0
VaristorPlugged-in
StandardsIEC 60947-4-1
Motor control
Industrial automation
Control panels
Automation systems with inductive loads
Power switching
Environments with voltage fluctuations
Motor Control Automation Systems Power Distribution Panels
Siemens 3RT2023-1DB44-3MA0 Contactor 3RT20231DB443MA0 Siemens 24V DC contactor varistor SIRIUS 3RT20 Contactor
Replaces older Siemens contactors with 24V DC coils that require integrated overvoltage protection. Compatible with Siemens accessories for the 3RT20 series.
Expert tip
The integrated varistor offers reliable protection for the DC coil against transient overvoltages, which is particularly useful in systems with frequent switching of large inductive loads.
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What is the purpose of the plugged-in varistor on the Siemens 3RT2023-1DB44-3MA0?
The plugged-in varistor on the Siemens 3RT2023-1DB44-3MA0 provides overvoltage protection for the coil. It absorbs voltage spikes that can occur when switching inductive loads, thus protecting the contactor coil from damage and extending its lifespan.