Siemens 3RT2 Contactor, 24V dc, 34 V dc Coil, 3-Pole, 20 A, 5.5 kW 34V dc, 1 NC, 400V

RS Stock No.:: 156-159
Mfr. Part No.:: 3RT2017-1XB42-0LA2
Manufacturer:: Siemens

Siemens 3RT2 Contactor, 24V dc, 34 V dc Coil, 3-Pole, 20 A, 5.5 kW 34V dc, 1 NC, 400V

Subtotal (1 unit)*

€88.37

(exc. VAT)

€108.70

(inc. VAT)

In Stock

Plus 4 unit(s) shipping from 04 May 2026

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Units	Per unit
1 +	€88.37

*price indicative

RS Stock No.:: 156-159
Mfr. Part No.:: 3RT2017-1XB42-0LA2
Manufacturer:: Siemens

Specifications

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Siemens
	Product Type	Contactor
	Coil Voltage	24, 34V dc
	Number of Poles	3
	Contact Voltage	400V
	Contact Current	20A
	Series	3RT2
	Power Rating	5.5kW
	Mount Type	DIN Rail
	Function	Mirror Contact, Motor Control
	Normal State Configuration	1 NC
	Auxiliary Contact Configuration	1 NC
	Number of Auxiliary Contacts	1
	Terminal Type	Screw
	Control Circuit Voltage Uc	34V dc
	Contactor Application	Traction Contactor
	Operational Current Ie	12A
	Minimum Operating Temperature	-40°C
	Maximum Operating Temperature	70°C
	Depth	73mm
	Length	58mm
	Standards/Approvals	PRS, IEC 60947-5-1, IEC 61508, RCM, RMRS, UKCA, UL, ABS, CCC, CE, CSA, DNV, EAC, IEC 60947-4-1
	Width	45mm
	Pole and Throw Configuration	3P

	Select all
	Brand Siemens
	Product Type Contactor
	Coil Voltage 24, 34V dc
	Number of Poles 3
	Contact Voltage 400V
	Contact Current 20A
	Series 3RT2
	Power Rating 5.5kW
	Mount Type DIN Rail
	Function Mirror Contact, Motor Control
	Normal State Configuration 1 NC
	Auxiliary Contact Configuration 1 NC
	Number of Auxiliary Contacts 1
	Terminal Type Screw
	Control Circuit Voltage Uc 34V dc
	Contactor Application Traction Contactor
	Operational Current Ie 12A
	Minimum Operating Temperature -40°C
	Maximum Operating Temperature 70°C
	Depth 73mm
	Length 58mm
	Standards/Approvals PRS, IEC 60947-5-1, IEC 61508, RCM, RMRS, UKCA, UL, ABS, CCC, CE, CSA, DNV, EAC, IEC 60947-4-1
	Width 45mm
	Pole and Throw Configuration 3P

Siemens 3RT2 Series Contactor, 24/34V DC Coil Voltage, 20A Contact Current - 3RT2017-1XB42-0LA2

This contactor is an electromagnetic switching device designed for controlling three-phase loads in industrial and rail traction environments. It operates with a DC Coil and is suited to switch AC circuits under defined utilisation categories, providing a Compact DIN-rail mount solution for control panels and traction equipment.

Features and Benefits:

• 24/34V DC Coil delivers controlled actuation for DC-operated systems
• Three poles with 400V rating enable three-phase switching for motors
• 20A contact capacity supports moderate current AC loads
• 12A operational current for defined continuous use cases
• Single NC auxiliary contact offers interlock or signalling capability
• Screw terminals ensure secure electrical connections under vibration

Applications

• Suitable for motor starters in AC-3 switching
• Used for traction control modules in railway equipment
• Ideal for remote switching in industrial control cabinets
• Can be used for pipe S-type mirror contact arrangements in panels

What ambient temperatures can it tolerate during operation?

It is specified to operate between -40°C and 70°C, accommodating cold starts and elevated enclosure temperatures.

How is the unit mounted within control gear?

The product is designed for DIN-rail mounting, enabling Rapid installation and alignment in standard switchgear racks.

What approvals support its use in rail applications?

It carries approvals relevant to railway service including PRS and RMRS, permitting deployment in rolling stock and related systems.

How does the Terminal type affect maintenance?

Screw terminals allow torque-controlled connections and straightforward replacement or retightening during scheduled service.