3RT2017-1VB42

S00 frame 3-pole motor contactor, AC-3 12A/5.5kW, 24V DC electronic wide-range coil can withstand voltage fluctuations of 0.85-1.85 times, built-in auxiliary normally closed contact, screw terminal mounting, suitable for control circuits with unstable voltage.

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Siemens 3RT2017-1VB42 Electronic Wide-Range Coil Contactor 24VDC 1NC

Product Positioning

The 3RT2017-1VB42 belongs to the Siemens SIRIUS 3RT20 series S00 frame contactor. The main circuit is a 3-pole, AC-3 rated 12A/5.5kW (400V). The coil adopts a 24V DC electronic wide-range design, allowing stable engagement and holding within a voltage range of 0.85 to 1.85 times the rated value. This is particularly useful for production lines where the control power supply voltage is easily affected by load fluctuations. The unit has a built-in auxiliary normally closed contact, which can directly feed back the contactor status to the PLC or control circuit. It is equipped with screw terminals and a 35mm DIN rail for easy maintenance and replacement in the distribution box.

Core Product Advantages and Features

Wide-range electronic coil

The coil's operating range is 0.85 to 1.85 times the rated voltage, making it more resistant to control voltage fluctuations or voltage drops than traditional DC coils, thus reducing the risk of malfunction.

S00 Standard Framework

It shares the same shape and mounting hole spacing as the 3RT2015/2016/2017 in the same series, which facilitates spare parts interchange and standardized panel design.

Built-in auxiliary normally closed contact

One set of normally closed (NC) auxiliary contacts can be used for power failure feedback, interlocking, or status monitoring, eliminating the need for additional auxiliary contact bases.

Original screw terminals

Both the main circuit and the control circuit use screw terminals, which can connect to 0.5-4mm² wires, ensuring high consistency in maintenance wiring.

project	Specification
Product Type	SIRIUS 3RT20 Series Electric Contactors
Rated current (AC-3)	12 A
Rated power	5.5 kW / 400V AC
Extreme number	3P (3 poles)
Frame size	S00 (45mm wide × 58mm high × 73mm deep)
coil voltage	24V DC
Coil operating range	0.85–1.85 × rated voltage (electronic wide-range coil)
auxiliary contacts	Group 1 normally closed (1NC)
Terminal type	Screw terminals, compatible with 0.5–4mm² wires.
Main circuit insulation voltage	690V
Impact and pressure resistant	6kV
Protection level	IP20 (Front)
Mechanical life	30 million times
Installation method	35mm DIN rail or screw fixing
Major Certifications	UL, CSA, CCC, CE

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3RT2017-1VB41

Like the 1VB42, it belongs to the electronic wide-range coil family. The difference is that the auxiliary contacts are changed to one set of normally open (NO). It is an AC-3 12A/5.5kW/400V, 24V DC coil that can withstand voltage fluctuations of 0.85-1.85 times, suitable for general starting circuits.

3RT2017-1SB41

The 24V DC electronic coil has a measured closing and holding power consumption of only 1.6W, an operating range of 0.85-1.85 times the rated voltage, and supports AC-3 12A/5.5kW/400V. It has a built-in set of auxiliary normally open contacts, making it suitable for circuits that maintain engagement for extended periods.