3RT2016-2FB41

The F-shaped coil is 24V DC and has a built-in suppression diode. It has 3 sets of main normally open contacts and 1 set of normally open auxiliary contacts. The S00 housing is compact and lightweight, making it suitable for distribution boxes with limited space.

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Siemens 3RT2016-2FB41 24VDC Diode Coil Contactor AC-3 9A 4kW 1 Normally Open

Product Positioning

The 3RT2016-2FB41 is the normally open auxiliary contact version of the aforementioned 2FB42, belonging to the "F" series of coils. It features a 24V DC control voltage and a built-in suppression diode. According to the specifications from the electronic component distributor, all three main contacts are normally open (3PST-NO), and the auxiliary contacts are one set of normally open (NO). It can be used for operating status indication, PLC input signal acquisition, or connecting to the next automatic control circuit. The main circuit maintains the common specifications of the S00 housing and AC-3 9A/4kW/400V family. With a measured net weight of approximately 0.313 kg, it is a very compact contactor, suitable for distribution boxes with limited space or control panels requiring multiple units to be installed side-by-side. The terminals use a spring-clamp design, allowing for direct insertion of cut wires for wiring without screws, making it particularly suitable for standardized assembly processes in mass-produced panels.

Core Product Advantages and Features

24V DC diode coil

The coil has a built-in suppression diode to absorb the back electromotive force at the moment of power failure, reducing electrical interference to surrounding control components.

1 set of normally open auxiliary contacts

It can be used for operational status feedback, PLC input signal acquisition, or to link the next control loop, and has high wiring flexibility.

Lightweight body

Weighing approximately 0.313 kg, the S00 compact enclosure is suitable for distribution boxes with limited space or for installation of multiple units side-by-side.

Spring-loaded quick-connect terminal

Both the main circuit and auxiliary contacts are spring-clamp type, requiring no screws for fastening, making them suitable for mass standardized assembly of panels.

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 NO (Normal Open)
Coil voltage/type	24V DC, built-in suppression diode
Terminal type	Cage clamp type, wire 0.5~4mm²/AWG 20~12
Main contact type	3 NO (Normally Open, 3PST-NO)
net weight	Approximately 0.313 kg
Protection level	IP20
Compliant with regulations	RoHS compliant

Recommend

3RT2016-2FB42

The F-shaped coil is 24V DC with a built-in suppression diode. It has 3 sets of normally open main contacts and 1 set of normally closed auxiliary contacts. The AC-3 rated value is 9A/4kW, and it is compatible with circuit breaker feedback or interlock protection circuits.

3RT2016-2BF41

Unlike most 24V DC versions in the same series, the 2BF41 has a coil voltage of 110V DC, making it suitable for applications with existing 110V DC control circuits. The main contacts and terminal specifications are consistent with the family.

3RT2016-2BB44

Compared to versions in the same series that only have one set of auxiliary contacts, the 2BB44 provides four sets of auxiliary contacts (2NO + 2NC), which can simultaneously drive multiple interlocking or indicator circuits, reducing the cost of adding auxiliary contact sockets.