3RT2017-1FB41

Siemens 3RT2017-1FB41 DC Electromagnetic Contactor, 24V DC, with Diode
Siemens 3RT2017-1FB41 DC Electromagnetic Contactor, 24V DC, with Diode

The S00 miniature electromagnetic contactor features a built-in diode design in its 24V DC coil, which reduces voltage surges during power outages. The AC-3 rated capacity is 12A/5.5kW (400V), and it has a 3-pole structure with one set of normally open auxiliary contacts.

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Siemens 3RT2017-1FB41 DC Electromagnetic Contactor, 24V DC, with Diode
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The 3RT2017-1FB41 is a small-frame electromagnetic contactor from the Siemens SIRIUS 3RT2 series, specifically the S00 model. Its main feature is the integration of a suppressor diode at the coil end, effectively absorbing the induced voltage generated by the 24V DC control power supply when the contactor is de-energized, reducing the impact on PLC output points or control circuits. The main contacts are a 3-pole normally open design, with an AC-3 rated current of 12A and a rated power of 5.5kW (400V). It also features a normally open auxiliary contact for feedback of the contactor's operating status. Wiring is done via screw terminals, and it is mounted in a standard S00 housing, making it suitable for motor starting and stopping applications requiring DC drive despite limited space.

Core Product Advantages and Features
Built-in suppression diode
The coil circuit integrates a diode, which can suppress back EMF surges during contactor release, protecting the controller output module and surrounding circuit components.
24V DC drive
The coil has a rated voltage of 24V DC and can be directly driven by a PLC output, a DC power supply, or a 24V busbar on a control panel, eliminating the need for additional relay conversion.
S00 Compact Housing
Using the SIRIUS 3RT2 standard S00 frame, it is small in size and light in weight (approximately 0.291kg), making it suitable for distribution boxes with limited panel space.
1 set of normally open auxiliary contacts
Includes a 1NO auxiliary contact, which can transmit the actual operating status of the contactor for monitoring or interlocking circuit use, simplifying external wiring.
project Specification
Series/Framework SIRIUS 3RT2, S00 small case
Extreme number 3-pole (3NO main contact)
AC-3 rated current 12 A
AC-3 Rated Power (400V) 5.5 kW
Coil Specifications 24V DC, built-in suppression diode
Auxiliary contact 1 set of normally open (1NO)
Wiring method Screw terminals, suitable for wire diameters of 0.5–4 mm²
Insulation voltage 690 V
net weight Approximately 0.291 kg
External dimensions 50×61.5×77.5 mm (including packaging)
Operating ambient temperature -25°C ~ +60°C
Place of origin Germany
Environmental protection standards Compliant with RoHS (since October 2009)

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