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Siemens 3RT2035-1KB40 3-Pole Contactor – 40A, 24V DC Coil

Siemens 3RT2035-1KB40 3-pole DC contactor, 40A, 24V DC coil.

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ManufacturerSiemens

Part number3RT2035-1KB40

Type Power Contactor

Manufacturer Siemens

Series SIRIUS 3RT2

Part Number 3RT2035-1KB40

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CAGE: 9NK75

40A AC-3 rating 18.5 kW power capacity 24V DC coil 1 NO + 1 NC auxiliary contacts Integrated varistor Suitable for PLC outputs S2 size

Product description

The Siemens 3RT2035-1KB40 is a 3-pole power contactor designed for AC-3 applications, rated for 40A and 18.5 kW at 400V. This DC-operated model features a 24V DC coil and includes an integrated varistor for surge suppression. It is equipped with one normally open (NO) and one normally closed (NC) auxiliary contact for essential control and signaling.

This S2-sized contactor is specifically designed for applications requiring DC control, such as PLC outputs. It features screw terminal connections for reliable electrical connections and is suitable for motor control and industrial automation.

Stanlo Automation, your veteran-owned surplus distributor, offers the Siemens 3RT2035-1KB40. We provide quality industrial components and dependable service to keep your operations running efficiently.

Technical specifications

Type	Power Contactor
Manufacturer	Siemens
Series	SIRIUS 3RT2
Part Number	3RT2035-1KB40
Poles	3-Pole
Rated Current (AC-3)	40 A
Rated Power (AC-3, 400V)	18.5 kW
Control Voltage	24 V DC
Auxiliary Contacts	1 NO + 1 NC
Terminal Type	Screw Terminal
Size	S2
Features	Integrated Varistor

Common applications

Motor control with DC control

PLC output switching

Industrial automation

Control panels

Machine building

DC operated loads

Compatible systems

PLCs (e.g., Siemens S7, Allen-Bradley ControlLogix) DC control systems Industrial automation panels

Also known as

Siemens SIRIUS 3RT2035-1KB40 3RT2035-1KB40 DC Contactor Siemens 40A DC Contactor

Replaces / compatible with

This DC-operated contactor is part of the Siemens SIRIUS 3RT2 series, offering reliable DC control solutions for industrial automation.

Technical note

Expert tip

The integrated varistor helps protect the coil and connected control circuitry from voltage spikes, enhancing system reliability.

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Frequently asked questions

Can the Siemens 3RT2035-1KB40 be used with PLC outputs?

Yes, the Siemens 3RT2035-1KB40 is specifically designed with a 24V DC coil and an integrated varistor, making it suitable for direct connection to PLC outputs for motor control.