3RT20162BB443MA0

The 3RT2016-2BB44-3MA0 is a Siemens SIRIUS S00 frame standard DC coil contactor. The main contacts are rated AC-3 at 9A, 4kW/400V, and the 24V DC coil operating range is approximately 0.8 to 1.1 times the rated voltage. It features spring-loaded terminals with two sets of normally open and two sets of normally closed auxiliary contacts, and weighs approximately 0.367 kg.

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Siemens 3RT2016-2BB44-3MA0 DC contactor 9A 4kW 24VDC 2NO2NC spring terminal

Product Positioning

The 3RT2016-2BB44-3MA0 is the standard 24V DC coil version (Type B coil, without diode) in the SIRIUS 3RT2016 series. The main contacts use the 9A, 4kW/400V S00 frame specification, and are pre-configured with four auxiliary contacts (two normally open and two normally closed), suitable for control circuits requiring both "operating" and "stopped" status signals simultaneously. The terminals use a spring-clamp design, allowing for screwless wiring of both main and auxiliary circuits, reducing on-site wiring and maintenance time.

Core Product Advantages and Features

24V DC standard coil

The coil is a standard type B 24V DC, with an operating voltage range of approximately 0.8 to 1.1 times the rated value. It can be directly driven by PLC or relay output without the need for external diode protection components.

2NO+2NC factory-fixed contacts

Four auxiliary contacts (2 normally open + 2 normally closed) are fixedly installed at the factory, which can simultaneously provide two signal circuits: operation indication and abnormal interlock.

Spring clip terminal wiring

Both the main circuit and the control circuit use spring-loaded terminals, eliminating the need for screw fastening and ensuring stable clamping force even under vibration.

Actual net weight: 0.367 kg

Official measurements show a net weight of approximately 0.367 kg. Its size follows the S00 frame design, making it suitable for dense distribution panel configurations.

project	Specification
model	3RT2016-2BB44-3MA0
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	2 sets of normally open + 2 sets of normally closed (2NO + 2NC), factory fixed.
Terminal type	Spring-loaded (screwless) terminals
net weight	0.367 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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