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Siemens 3RT2018-1FB44-3MA0 Contactor — 16A 7.5kW 24V DC

Siemens 3RT2018-1FB44-3MA0 3-pole power contactor, 2NO/2NC.

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ManufacturerSiemens

Part number3RT2018-1FB44-3MA0

Type Power Contactor

AC-3e/AC-3 Rating 16 A

kW Rating 7.5 kW at 400 V

Poles 3

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AC-3e/AC-3 rated 16A current 7.5kW power 24V DC coil with diode 2 NO + 2 NC auxiliary contacts Captive auxiliary switch Screw terminals Size S00

Product description

The Siemens 3RT2018-1FB44-3MA0 is a 3-pole power contactor for AC-3e/AC-3 applications, rated at 16A and 7.5kW (400V). It features a 24V DC coil with an integrated diode for surge suppression and includes a captive auxiliary switch with 2 NO and 2 NC contacts. Connections are via screw terminals, and it is a Size S00 unit.

This versatile contactor is designed for complex control and automation tasks in industrial settings. It's ideal for motor control, pump systems, and any application requiring multiple auxiliary contacts for signaling or interlocking.

Stanlo Automation, a veteran-owned supplier of surplus industrial parts, offers the Siemens 3RT2018-1FB44-3MA0. Secure reliable components for your MRO needs from a trusted source.

Technical specifications

Type	Power Contactor
AC-3e/AC-3 Rating	16 A
kW Rating	7.5 kW at 400 V
Poles	3
Coil Voltage	24 V DC
Integrated Suppression	Diode
Auxiliary Contacts	2 NO + 2 NC
Terminal Type	Screw
Size	S00
Captive Auxiliary Switch	Yes

Common applications

Motor control

Automation

Industrial machinery

Pump systems

Signaling

Interlocking

Control panels

Compatible systems

Siemens 3RT2 series accessories PLC systems 24V DC control circuits Industrial automation panels

Also known as

Siemens 3RT2018-1FB44-3MA0 Siemens 24V DC contactor with 2NO2NC 3RT2 S00 4-aux

Replaces / compatible with

This unit replaces Siemens S00 contactors with integrated auxiliary switches, offering expanded control capabilities. Compatible with Siemens control accessories.

Technical note

Expert tip

The captive auxiliary switch is pre-installed and fixed, ensuring reliable contact operation and simplifying installation compared to add-on blocks.

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Frequently asked questions

What is the auxiliary contact configuration on the 3RT2018-1FB44-3MA0?

The Siemens 3RT2018-1FB44-3MA0 features a captive auxiliary switch with two normally open (NO) and two normally closed (NC) contacts. This provides multiple signaling and interlocking options.