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Siemens 3RT2017-1KB42 Contactor — 12A, 5.5kW, 24V DC, 1 NC

Siemens 3RT2017-1KB42 3-pole power contactor with 24V DC coil, 1 NC.

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ManufacturerSiemens

Part number3RT2017-1KB42

Current 12A

Power 5.5 kW / 400 V

Poles 3

Coil Voltage 24 V DC

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AC-3e/AC-3 rated 5.5 kW @ 400V 24V DC Coil Integrated Suppressor Diode 1 NC Auxiliary Contact Screw Terminal Connections

Product description

The Siemens 3RT2017-1KB42 is a robust 3-pole power contactor rated for AC-3e/AC-3 applications, handling up to 12A and 5.5kW at 400V. It features a 24V DC coil with an operating range of 0.7-1.25* Uc and includes an integrated suppressor diode. This specific model is equipped with one normally closed (NC) auxiliary contact and uses screw terminals for reliable electrical connections. The frame size is S00, making it suitable for PLC outputs.

This contactor is designed for various industrial applications including motor starting, switching of power circuits, and integration into automated systems. It is commonly used in sectors like manufacturing, food and beverage processing, and water treatment plants where dependable electrical control is paramount.

Stanlo Automation, a proud veteran-owned surplus parts distributor, offers the Siemens 3RT2017-1KB42. We are dedicated to providing high-quality industrial automation components, ensuring that our customers receive reliable and cost-effective solutions. Partner with Stanlo Automation for your essential electrical and automation needs.

Technical specifications

Current	12A
Power	5.5 kW / 400 V
Poles	3
Coil Voltage	24 V DC
Auxiliary Contacts	1 NC
Terminals	Screw
Frame Size	S00
Duty	AC-3e/AC-3
Features	Integrated Suppressor Diode

Common applications

Motor Control

Power Switching

Industrial Automation

PLC Outputs

Control Panels

Alarm Circuits

Compatible systems

PLC Outputs Control Systems Industrial Control Panels

Also known as

Siemens 3RT2017-1KB42 Contactor 3RT2017-1KB42 Siemens Siemens S00 Contactor 1NC

Replaces / compatible with

This part is a standard Siemens 3RT20 series contactor. It is designed for direct replacement of other Siemens 3RT2017 series contactors with similar specifications, particularly those requiring a 1 NC auxiliary contact.

Technical note

Expert tip

The integrated suppressor diode is beneficial for applications where the NC auxiliary contact is used for safety interlocks, as it helps mitigate coil back EMF.

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Frequently asked questions

Does the Siemens 3RT2017-1KB42 have a normally closed auxiliary contact?

Yes, the Siemens 3RT2017-1KB42 power contactor comes equipped with one normally closed (NC) auxiliary contact. This is in addition to its main power switching poles.