3RT20151BB443MA0

The S00 frame 3-pole power contactor features a 24V DC coil with traditional screw terminals and a factory-installed 2NO+2NC auxiliary contact group. According to cross-checking data from TME and MROSupply, the unit weighs approximately 344.9 grams.

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Siemens 3RT2015-1BB44-3MA0 DC contactor, 24VDC, screw terminal 2NO+2NC

Product Positioning

The 3RT2015-1BB44-3MA0 belongs to the SIRIUS 3RT2 series S00 minimum frame. It features a 3-pole main contact configuration with 3NO contacts, rated at 7A (AC-3) and approximately 3kW at 400V, suitable for direct opening and closing of small-power motors or solenoid valves. The control circuit uses a 24V DC coil, and the terminals are secured with traditional screws, following familiar wiring practices in Taiwan. This model comes pre-installed with 4 sets of fixed auxiliary contacts (2NO + 2NC). Cross-checking data from TME Electronic Components Platform and MROSupply shows a net weight of approximately 344.9 grams (0.758 lbs), indicating high consistency. The "-3MA0" suffix is shared with several other products in the same series; currently available public information only indicates it as a factory version suffix, without specifying functional differences.

Core Product Advantages and Features

24V DC standard coil

The coil is rated at 24V DC and is suitable for direct drive by general PLC output or 24V control power supply. The operating voltage range covers 0.7~1.25 times the rated voltage.

Traditional screw terminals

The main circuit uses screw terminals for fastening, and the wiring method is compatible with the existing wiring methods of most control boxes in Taiwan, making maintenance and replacement intuitive.

2NO+2NC fixed auxiliary contacts

It comes with 4 sets of auxiliary contacts (2 normally open + 2 normally closed) built in, which can simultaneously meet the dual needs of self-holding circuit and monitoring indication.

cross-verification of weight

The data was verified by two independent sources, TME (344.92g) and MROSupply (0.758lb≈344g), and the data is consistent, which is helpful for estimating the installation weight and calculating logistics costs.

project	Specification
Series/Framework	SIRIUS 3RT2015, S00 (Minimum Frame)
Number of poles/main contacts	3 poles, 3NO
AC-3 rated current	7 A
AC-3 rated power	3 kW / 400 V
Coil Specifications	24 V DC
Auxiliary contacts	2NO+2NC, factory-fixed
Terminal type	Screw terminals
net weight	Approximately 344.9 grams (verified from both sources)
Rated insulation voltage Ui	690 V
Rated impulse withstand voltage Uimp	6 kV
Protection level	IP20 (front of terminal)
Mechanical life	Approximately 30 million cycles (excluding auxiliary contact points)
Ambient temperature	Operating temperature: -25~+60°C / Storage temperature: -55~+80°C
Applicable Standards	IEC 60947-4-1, etc.
Order suffix	-3MA0 (factory version code; details of the differences are not specified in publicly available information)

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