3RT2017-2KF41

The Siemens SIRIUS 3RT2017-2KF41 three-pole electromagnetic contactor features a 110V DC coil with a built-in suppression diode and one set of NO auxiliary contacts. It is rated for AC-3 at 12A and 5.5kW and has spring terminals for quick wiring.

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Siemens 3RT2017-2KF41 DC electromagnetic contactor, 110VDC, 12A/5.5kW

Product Positioning

The 3RT2017-2KF41 is a three-pole electromagnetic contactor from the Siemens SIRIUS 3RT20 series S00 frame. Its main circuit, rated at AC-3 12A and 400V, can control a 5.5kW motor load. The coil operates at 110V DC, with an operating voltage range of 0.7 to 1.25 times the rated value. It incorporates a built-in suppression diode to protect the switching elements of the control circuit. Equipped with one set of NO instantaneous auxiliary contacts, it is suitable for applications requiring DC control power supply, such as panel wiring and direct drive applications using PLC outputs.

Core Product Advantages and Features

S00 small frame, high-density internal configuration

With dimensions of only 45 (width) x 70 (height) x 73 (depth) mm and a weight of approximately 0.316 kg, it is suitable for space-constrained control box and drawer panel designs.

110V DC coil, built-in suppression diode

The operating range is 0.7~1.25 times the rated voltage, the coil power consumption is only 2.8W, and the diode can reduce the surge stress on the PLC output stage at the moment of power failure.

Spring-loaded terminal blocks

Both the main circuit and auxiliary circuit use spring clip terminals, which can connect to 0.5~4mm² wires, eliminating the need for tools to tighten screws, making wiring and maintenance faster.

High durability mechanical life

With a mechanical operating life of up to 30 million cycles, IP20 finger-touch protection, and 690V insulation voltage (contamination level 3), it ensures stable and reliable long-term operation.

project	Specification
Rated operating current (AC-3, 400V)	12 A
Rated operating power (AC-3, 400V)	5.5 kW
Main contact type	3NO (3-pole normally open)
Coil voltage/type	110 V DC, operating range 0.7~1.25 times rated value
Coil power consumption	2.8 W
Auxiliary contact	1 NO instantaneous contact, AC-12 rated 10A
Special features	Built-in suppression diode (suitable for PLC output drive)
Terminal blocks	Spring-loaded terminals, suitable for connecting wires from 0.5 to 4 mm².
External dimensions (height x width x depth)	70 x 45 x 73 mm
weight	0.316 kg
Enclosure protection level	IP20 (finger touch protection)
Insulation voltage/contamination level	690 V / Pollution level 3
Mechanical operating life	30 million times
Frame size	S00
Place of origin	Germany

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Siemens SIRIUS 3RT2017-2KB41 features a 24V DC coil, one set of normally open (NO) auxiliary contacts, a mechanical life of 30 million cycles, spring terminals, and support for upright mounting.