3RT2016-4BB41

The 3RT2016-4BB41 belongs to the Siemens SIRIUS 3RT2016 series. The main contacts are rated AC-3, 9A, 4kW/400V, and the 24V DC coil is equipped with one set of normally open auxiliary contacts. According to the original catalog, the 8th digit of the order number '4' indicates that the main circuit adopts a ring crimp terminal design, which is suitable for crimp wiring.

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Siemens 3RT2016-4BB41 DC contactor 9A 4kW 24VDC ring terminal 1NO

Product Positioning

The 3RT2016-4BB41 and 3RT2016-1BB41 share the same electrical specifications—AC-3 rated 9A, 4kW/400V main contacts, 24V DC coil, and one set of normally open auxiliary contacts. The only difference between the two is the main circuit terminal configuration. According to Siemens' original catalog, the 8th digit of the order number has been changed from '1' to '4', indicating that the S00/S0 specification contactor uses a ring lug terminal, which is suitable for field use of crimp terminals with copper lugs for wiring, rather than the traditional screw-locking power distribution method. The original catalog also mentions that models with communication interfaces or UC (universal) coils do not offer this terminal option.

Core Product Advantages and Features

Ring crimp terminal main circuit

The 8th digit of the order number is '4'. The main circuit terminal adopts a ring crimp terminal design, which is suitable for control boxes or panels that complete the wiring with crimp terminals (copper lugs).

24V DC standard coil

The coil specifications are the same as 1BB41, which is 24V DC and has an operating range of approximately 0.8 to 1.1 times the rated value. It can be driven by a general DC power supply or PLC output.

1 set of normally open auxiliary contacts

It has a built-in set of normally open (NO) auxiliary contacts, which can be used as operation indication or interlock signal output, and share logic with other models in the same series.

AC-3 9A/4kW main contacts

The main contact specifications are the same as the 3RT2016 series, with a rated current of 9A and a power of 4kW at 400V, suitable for direct start control of small three-phase motors.

project	Specification
model	3RT2016-4BB41
Rated current (AC-3)	9 A
Rated power (400V, AC-3)	4 kW
Number of poles/main contacts	3 poles, 3 sets of normally open (NO) terminals
coil voltage	24V DC
Auxiliary contacts	1 normally open (1NO) group
Terminal type	Ring-shaped crimp terminal (main circuit)
Casing Specifications	S00 framework
Insulation voltage	690 V
Protection level	IP20 (Front)
Mechanical life	Approximately 30 million times (standard value)
Ambient temperature	-25°C ~ +60°C

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