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Siemens 3RT2018-1BB42 Power Contactor - 16A, 7.5kW

Siemens 3RT2018-1BB42 3-pole power contactor for AC-3e/AC-3, 16A.

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ManufacturerSiemens

Part number3RT2018-1BB42

Type Power Contactor

Manufacturer Siemens

Part Number 3RT2018-1BB42

AC-3e/AC-3 Rating 16 A

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AC-3e/AC-3 operation 16A continuous current 7.5kW switching capacity 24V DC coil 1 NC auxiliary contact Screw terminal connections

Product description

The Siemens 3RT2018-1BB42 is a 3-pole power contactor designed for AC-3e/AC-3 applications, rated for 16A and 7.5kW at 400V. It features a 24V DC coil and includes one normally closed (NC) auxiliary contact, with screw terminals for easy connection. This contactor is built to Siemens' rigorous standards for reliability and performance in demanding industrial environments.

This contactor is suitable for controlling motors, switching resistive loads, and other general industrial applications. It is commonly found in motor control circuits, power distribution systems, and automation panels across various industries such as manufacturing, HVAC, and material handling.

Source your Siemens 3RT2018-1BB42 from Stanlo Automation, a veteran-owned business. We offer a wide selection of industrial surplus parts, ensuring you get the components you need to keep your operations running smoothly. Our commitment to quality and customer service makes us a trusted partner for your automation needs.

Technical specifications

Type	Power Contactor
Manufacturer	Siemens
Part Number	3RT2018-1BB42
AC-3e/AC-3 Rating	16 A
Power @ 400V	7.5 kW
Poles	3
Coil Voltage	24 V DC
Auxiliary Contacts	1 NC
Terminals	Screw

Common applications

Motor control

Resistive load switching

Automation panels

Power distribution

Manufacturing

HVAC systems

Material handling

Compatible systems

Siemens S00 size components 3RH29 auxiliary contact blocks

Also known as

Siemens 3RT2018 3RT20181BB42 Siemens 16A Contactor 24V DC Contactor

Replaces / compatible with

Compatible with Siemens 3RT2 series accessories.

Technical note

Expert tip

Ensure proper wiring for the 24V DC coil and verify the auxiliary contact configuration (1 NC) meets the control circuit requirements.

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Frequently asked questions

What is the AC-3e/AC-3 rating for the Siemens 3RT2018-1BB42 contactor?

The Siemens 3RT2018-1BB42 is rated for AC-3e/AC-3 duty, allowing it to handle motor loads with a continuous current of 16A and a switching capacity of 7.5 kW at 400V. This ensures reliable operation for demanding motor control applications.