3RT20161BB443MA0

The 3RT2016-1BB44-3MA0 is a Siemens SIRIUS S00 frame standard DC coil contactor. The main contacts are AC-3 rated at 9A, 4kW/400V, with a 24V DC coil. It features screw terminals with 2 sets of normally open and 2 sets of normally closed auxiliary contacts. The net weight is approximately 0.34 kg, and the housing size is 58×45×117 mm.

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Siemens 3RT2016-1BB44-3MA0 DC contactor 9A 4kW 24VDC 2NO2NC screw terminal

Product Positioning

The 3RT2016-1BB44-3MA0 is the standard 24V DC coil version (Type B coil, without diode) of the SIRIUS 3RT2016 series. It shares the same main and auxiliary contact configurations as the 1FB44-3MA0 (code F), the only difference being whether the coil has a built-in freewheeling diode. If the downstream control circuit already has a surge suppression design, the Type B coil without the diode can be used, resulting in a more cost-effective solution. The main contacts are AC-3 9A, 4kW/400V. The auxiliary contacts are factory-configured with 2 sets of normally open and 2 sets of normally closed contacts. The terminals are screw-type, with an insulation voltage of 690V and an impulse voltage withstand of up to 6kV.

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, suitable for direct drive of general PLC or relay outputs.

2NO+2NC factory-fixed auxiliary contacts

Four auxiliary contacts (2 normally open + 2 normally closed) are factory-installed for easy simultaneous acquisition of operation indication and interlock protection signals.

Screw terminal wiring

Both the main circuit and the control circuit use screw terminals, and the general wiring procedures and tools can be used.

Net weight 0.34kg, withstand voltage 6kV

The actual net weight is approximately 0.34 kg, the insulation voltage is 690V, and the impulse voltage can reach 6kV, making it suitable for general industrial power distribution environments.

project	Specification
model	3RT2016-1BB44-3MA0
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	Screw terminals
Shell dimensions (height × width × depth)	58×45×117 mm
net weight	0.340 kg
Insulation voltage	690 V (6kV impulse withstand voltage)
Protection level	IP20 (Front)
Mechanical life	Approximately 30 million times (standard value)
Ambient temperature	-25°C ~ +60°C

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