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Siemens 3RT2018-1BB44-3MA0 3-Pole Power Contactor

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ManufacturerSiemens

Part number3RT2018-1BB44-3MA0

AC-3e/AC-3 Rating 16A, 7.5kW/400V

Poles 3

Coil Voltage 24V DC

Auxiliary Contacts 2 NO + 2 NC

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16A AC-3e/AC-3 rating 7.5kW power at 400V 24V DC coil 2 NO + 2 NC auxiliary contacts Captive auxiliary switch Screw terminals

Product description

The Siemens 3RT2018-1BB44-3MA0 is a 3-pole power contactor rated for AC-3e/AC-3 at 16A and 7.5kW (400V). It operates with a 24V DC coil and features a captive auxiliary switch with 2 normally open (NO) and 2 normally closed (NC) contacts. This contactor utilizes screw terminals and has a compact S00 frame size.

This contactor is designed for reliable motor control and switching in industrial applications. The 24V DC coil is common in control systems, and the dual auxiliary contacts (2 NO + 2 NC) provide flexibility for complex control and signaling circuits.

Stanlo Automation, a veteran-owned distributor of surplus industrial parts, offers the Siemens 3RT2018-1BB44-3MA0. We provide authentic Siemens components, ensuring quality and performance for your automation projects. Trust Stanlo Automation for your industrial supply needs.

Technical specifications

AC-3e/AC-3 Rating	16A, 7.5kW/400V
Poles	3
Coil Voltage	24V DC
Auxiliary Contacts	2 NO + 2 NC
Terminals	Screw
Frame Size	S00
Captive Auxiliary Switch	Yes
Mechanical Life	10,000,000 cycles

Common applications

Motor control

Industrial machinery

Automation systems

Control circuits

Signaling

Also known as

SIRIUS 3RT2018-1BB44-3MA0 Siemens Contactor 24V DC

Replaces / compatible with

This Siemens 3RT2018-1BB44-3MA0 is part of the SIRIUS 3RT2 series and is suitable for applications requiring a 16A, 24V DC contactor with multiple auxiliary contacts.

Technical note

Expert tip

The captive auxiliary switch ensures reliable operation and is integrated into the contactor for ease of installation.

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Frequently asked questions

What auxiliary contacts are included with the Siemens 3RT2018-1BB44-3MA0 contactor?

The Siemens 3RT2018-1BB44-3MA0 power contactor comes with a captive auxiliary switch featuring 2 normally open (NO) and 2 normally closed (NC) contacts, offering flexibility for complex control and signaling.