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Siemens 3RT2024-1DB44-3MA0 Contactor with Varistor - 12A, 24V DC

Siemens 3RT2024-1DB44-3MA0 3-pole power contactor with varistor.

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ManufacturerSiemens

Part number3RT2024-1DB44-3MA0

Type Power Contactor

Poles 3

AC-3e/AC-3 Rating 12A, 5.5 kW / 400 V

Coil Voltage 24V DC

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AC-3e/AC-3 rated 24V DC coil 2 NO + 2 NC auxiliary contacts Size S0 Captive auxiliary switch Integrated varistor Screw terminals

Product description

The Siemens 3RT2024-1DB44-3MA0 is a 3-pole power contactor for AC-3e/AC-3 applications, rated at 12 A and 5.5 kW at 400 V. It features a 24 V DC coil, 2 NO + 2 NC auxiliary contacts, and a captive auxiliary switch. This size S0 contactor includes a plugged-in varistor for surge suppression and uses screw terminals.

This DC-operated contactor is designed for applications where voltage transients need to be suppressed, such as in environments with electrical noise or sensitive control circuits. It is ideal for industrial automation, motor control, and power switching where protection against voltage spikes is critical.

Stanlo Automation, a veteran-owned distributor of surplus industrial automation parts, offers the Siemens 3RT2024-1DB44-3MA0. We provide reliable components to keep your systems running efficiently, ensuring cost-effectiveness and operational continuity.

Technical specifications

Type	Power Contactor
Poles	3
AC-3e/AC-3 Rating	12A, 5.5 kW / 400 V
Coil Voltage	24V DC
Auxiliary Contacts	2 NO + 2 NC
Terminal Type	Screw
Size	S0
Auxiliary Switch	Captive
Surge Suppression	Plugged-in Varistor

Common applications

DC Motor Control

Industrial Automation

Surge Protection

Control Panels

Renewable Energy

Sensitive Electronics

Compatible systems

DC control systems Siemens automation panels 24V DC power sources Systems requiring transient voltage protection

Also known as

Siemens 3RT2024-1DB44-3MA0 Siemens Contactor with Varistor 3RT2 S0 DC Varistor

Replaces / compatible with

This contactor replaces Siemens 3RT2 series contactors with a 24V DC coil and captive auxiliary switches, offering integrated surge suppression. It is compatible with Siemens S0 accessories.

Technical note

Expert tip

The integrated varistor in the 3RT2024-1DB44-3MA0 is designed to clamp transient voltages, offering protection without the need for external suppressor modules.

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Frequently asked questions

What is the purpose of the varistor in the Siemens 3RT2024-1DB44-3MA0?

The plugged-in varistor in the Siemens 3RT2024-1DB44-3MA0 provides integrated surge suppression, protecting the contactor and connected components from voltage spikes and transients.