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Siemens 3RT2018-2BB42 Power Contactor — 16A 7.5kW 24V DC

Siemens 3RT2018-2BB42 3-pole power contactor, 24V DC, 1NC.

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ManufacturerSiemens

Part number3RT2018-2BB42

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 1 NC auxiliary contact Spring-loaded terminals Size S00

Product description

The Siemens 3RT2018-2BB42 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 and a 1 NC auxiliary contact, utilizing spring-loaded terminals. This is a Size S00 contactor.

This contactor is suitable for motor control and switching applications in industrial automation where a 24V DC control voltage and a normally closed auxiliary contact are required. The spring-loaded terminals offer enhanced connection reliability, especially in vibrating environments.

Stanlo Automation, a veteran-owned distributor of surplus industrial parts, offers the Siemens 3RT2018-2BB42. Find quality surplus components for your maintenance and repair needs.

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
Auxiliary Contacts	1 NC
Terminal Type	Spring-loaded
Size	S00

Common applications

Motor control

Industrial automation

Machine control

Pump systems

Control panels

Signaling

Compatible systems

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

Also known as

Siemens 3RT2018-2BB42 Siemens 24V DC contactor 1NC 3RT2 S00 spring NC

Replaces / compatible with

This contactor can replace Siemens S00 size contactors with 24V DC coils and NC auxiliary contacts. The spring-loaded terminals offer robust connections in vibration-prone areas.

Technical note

Expert tip

The spring-loaded terminals provide a self-tightening connection, ideal for applications with frequent vibrations or where manual re-tightening is difficult.

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Frequently asked questions

What is the auxiliary contact type on the Siemens 3RT2018-2BB42?

The Siemens 3RT2018-2BB42 features one normally closed (NC) auxiliary contact. This contact is separate from the main power poles and can be used for control or interlocking circuits.