3RT20161MB410KT0

The 3RT2016-1MB41-0KT0 is a Siemens SIRIUS 3RT2016 series. The main contacts are AC-3 rated at 9A, 4kW/400V. The coil code M indicates a 24V DC wide-range type with an operating voltage range of 0.85~1.85 times the rated value. It has one set of normally open auxiliary contacts and screw terminal wiring.

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Siemens 3RT2016-1MB41-0KT0 DC contactor 9A 4kW 24VDC wide-range coil 1NO

Product Positioning

The 3RT2016-1MB41-0KT0 uses a 24V DC wide-range coil with the code 'M' from the SIRIUS series. The official operating voltage range is 0.85~1.85 times the rated voltage (Uc), significantly wider than the standard B-type coil's range of approximately 0.8~1.1 times. This makes it suitable for applications with unstable power quality or where the coil terminal voltage is low due to line voltage drop, reducing the risk of contactor malfunction or failure to engage due to voltage fluctuations. The main contacts maintain the 3RT2016 series AC-3 9A, 4kW/400V specifications, and the auxiliary contacts are one set of normally open (NO). The terminals use a standard screw design. The '-0KT0' at the end of the model number is an original manufacturer's ordering code; its actual meaning is not explicitly defined in the publicly available catalog. This page only uses verified coil and contact specifications and does not speculate.

Core Product Advantages and Features

24V DC wide-range coil (0.85~1.85Uc)

The coil designation is M, and its operating voltage range is much wider than that of the standard B-type coil. It is suitable for fields with large voltage fluctuations or significant line voltage drops, reducing the risk of contactor malfunction.

AC-3 9A/4kW main contacts

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

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 circuit signal output, eliminating the need to install auxiliary contact modules.

Screw terminals, S00 standard shape

The design continues the standard screw terminal design of the S00 frame, facilitating a unified installation method with other 3RT2016 series contactors in existing distribution panels.

project	Specification
model	3RT2016-1MB41-0KT0
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, wide operating range 0.85~1.85 times rated value
Auxiliary contacts	1 normally open (1NO) group
Terminal type	Screw terminals
net weight	Approximately 0.298 kg
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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