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Siemens 3RT2018-1UB41 Power Contactor — 16A 7.5kW 24V DC

Siemens 3RT2018-1UB41 3-pole power contactor with varistor.

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ManufacturerSiemens

Part number3RT2018-1UB41

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 varistor 1 NO auxiliary contact Screw terminals Size S00

Product description

The Siemens 3RT2018-1UB41 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 varistor for transient voltage suppression, a 1 NO auxiliary contact, and screw terminals. This is a Size S00 contactor.

This power contactor is suitable for motor control and general switching duties in industrial automation. The integrated varistor provides protection against voltage surges on the control circuit, making it reliable for various applications.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RT2018-1UB41. We provide quality surplus components to help you maintain your automation systems at a lower cost.

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	Varistor
Auxiliary Contacts	1 NO
Terminal Type	Screw
Size	S00

Common applications

Motor control

Automation

Industrial machinery

Transient suppression

Power switching

Control circuits

Compatible systems

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

Also known as

Siemens 3RT2018-1UB41 contactor Siemens 24V DC varistor contactor 3RT2 S00 surge protection

Replaces / compatible with

This contactor can replace Siemens S00 size contactors with similar ratings and 24V DC coils. It offers integrated surge protection via a varistor.

Technical note

Expert tip

The integrated varistor is effective for suppressing common voltage spikes generated when the coil is switched off, simplifying control circuit design.

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Frequently asked questions

What type of surge protection is included in the 3RT2018-1UB41?

The Siemens 3RT2018-1UB41 includes an integrated varistor in its coil circuit. This component helps to suppress voltage transients, protecting sensitive control electronics from damage.