3RT2017-1AB02

The 3RT2017-1AB02 is a Siemens SIRIUS S00 frame 3-pole miniature power contactor. It has 3 sets of normally open main contacts that correspond to AC-3 12A, 5.5kW/400V loads. The coil is driven by 24V AC (50/60Hz) and has a built-in set of normally closed auxiliary contacts for easy interlocking with PLC or protection circuits.

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Siemens 3RT2017-1AB02 AC Contactor 12A 5.5kW 24VAC 1NC

Product Positioning

The 3RT2017-1AB02 is a standard 3-pole power contactor in the Siemens SIRIUS 3RT2 series, S00 frame. It features AC-3 rated current of 12A and a main contact specification of 5.5kW/400V, suitable for direct start and stop control of small to medium-sized three-phase asynchronous motors. The control coil is powered by 24V AC (50/60Hz) and integrates one set of normally closed (NC) auxiliary contacts, which can be directly used for interlocking circuits or status reporting without the need for additional auxiliary contact modules.

Core Product Advantages and Features

3-pole 12A main circuit

The main contacts are designed with AC-3 12A, 5.5kW/400V, which can directly drive the start and stop of general small and medium-sized three-phase motors and meet the starting current requirements of most pump, fan and conveyor belt applications.

24V AC standard coil

The control coil is a 24V AC 50/60Hz specification, with an operating voltage range of approximately 0.8 to 1.1 times the rated value, making it easy to connect to general control transformers or PLC output modules.

Built-in 1 set of normally closed auxiliary contacts

The main body integrates one set of normally closed (NC) auxiliary contacts, which can be used for motor operation status feedback, interlock protection, or to form an interlock circuit with other contactors, reducing the cost of external auxiliary contact modules.

S00 miniaturized design

It adopts the SIRIUS 3RT2 series S00 frame, with a small size of 45×58×73mm, and can be quickly installed with DIN rail, making it suitable for high-density configuration in distribution panels.

project	Specification
model	3RT2017-1AB02
Rated current (AC-3)	12 A
Rated power (400V, AC-3)	5.5 kW
Number of poles/main contacts	3 poles, 3 sets of normally open (NO) terminals
coil voltage	24V AC, 50/60Hz
auxiliary contacts	Group 1 normally closed (1NC)
Terminal type	Screw terminals
Shell dimensions (height × width × depth)	58×45×73 mm
net weight	Approximately 232 g (actual measured value within the same series)
Insulation voltage	690 V
Protection level	IP20 (Front)
Mechanical life	Approximately 30 million times
Ambient temperature	-25°C ~ +60°C
Safety certification	UL, CSA, CCC, KC, EAC

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