3RT2016-2VB42

The Siemens 3RT2016-2VB42 is a SIRIUS contactor with an S00 housing. It can stably engage with a coil voltage of 0.85 to 1.85 times the rated value. It has a built-in diode to suppress back EMF and is equipped with a set of normally closed auxiliary contacts for easy signal feedback configuration.

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Siemens 3RT2016-2VB42 24VDC Wide Range Coil Contactor AC-3 9A 4kW 1 Normally Closed

Product Positioning

The 3RT2016 series is an entry-level power contactor in the Siemens SIRIUS family, with an S00 housing and an AC-3 9A/4kW rating. This series is often mistakenly confused with the larger 3RT2017 (12A/5.5kW) in the market; therefore, it is essential to verify the housing and rating before selection. The 2VB42 is the 24V DC coil version, featuring a wide-range coil circuit design that allows normal engagement and maintenance of diode arc suppression protection within voltages ranging from 0.85 to 1.85 times the rated value. This is particularly useful in environments with significant power supply voltage fluctuations (such as generator power supply or long-distance wiring voltage drops). This product comes standard with one normally closed (NC) auxiliary contact, which can be directly used for interlocking or fault reporting in motor starting circuits. The terminals use a cage-clamp quick-connect design, allowing for screwless insertion of wires, making it especially suitable for large-scale wiring in panel production lines and subsequent maintenance and replacement.

Core Product Advantages and Features

Wide-range coil design

The coil can operate stably within a voltage range of 0.85 to 1.85 times the rated voltage, tolerates power supply voltage fluctuations, and has a built-in diode to absorb back electromotive force, reducing interference in the control circuit.

Spring-type terminals

Both the main circuit and auxiliary contacts use spring-clamp terminals with wire cross-sections of 0.5~4mm² (AWG20~12). They are plug-and-play, screwless, and offer high efficiency for maintenance and replacement.

1 set of normally closed auxiliary contacts

The built-in normally closed (NC) contact in the 1a1b configuration can be used as a circuit breaker feedback or interlock signal, reducing the cost of adding an auxiliary contact module.

S00 Small Case

With a compact size of 45x70x73mm, the 9A/4kW AC-3 rating is sufficient to handle small motors and pump loads, saving installation space in the distribution box.

project	Specification
Main circuit structure	3-pole normally open (3NO) is suitable for direct starting of three-phase motors.
AC-3 Rated Current/Power	9 A / 4 kW (400V)
Maximum rated operating voltage	690V AC 50/60Hz
Case size	S00 (45 mm wide x 70 mm high x 73 mm deep, consistent across all versions)
Mechanical life	Approximately 30 million cycles.
Installation method	35mm standard DIN rail mounting
Auxiliary contact type	1 NC (normally closed)
Coil voltage/type	24V DC, wide-range coil (0.85~1.85 times Us), built-in diode
Terminal type	Cage clamp type, wire 0.5~4mm²/AWG 20~12
net weight	Approximately 0.318 kg
Auxiliary contact rating	AC-12 10A; AC-15 3A/400V
Electrical life	The AC-4 has approximately 200,000 cycles (4.1A/400V).
Protection level	IP20
Major Certifications	UL, CSA, CCC, KC, EAC, RCM, RoHS compliant
Classification Certification	ABS, BV, DNV, LR, RINA, RMRS

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