3RT2015-1BA42

The 3RT2015-1BA42 is a Siemens SIRIUS S00 series 3-pole power contactor with a 12V DC coil, one set of normally closed (1NC) auxiliary contacts, rated at 7A and 3kW, suitable for low-voltage 12V DC control circuits.

Share To

Siemens 3RT2015-1BA42 DC12V coil S00 3-pole 1NC auxiliary contact

Product Positioning

The 3RT2015-1BA42 is the lowest-voltage specification in the Siemens SIRIUS 3RT2 series S00 frame 3-pole power contactor, operating at 12V DC. This low-voltage DC coil option is relatively uncommon in the series and is frequently found in vehicle power systems, battery-powered equipment, or special industrial applications using 12V DC as the control circuit power supply. It eliminates the cost and potential for failure associated with adding a 24V to 12V power module. One normally closed (1NC) auxiliary contact is suitable for use as a power-off interlock or safety interlock signal, complementing the 1BA41 (1NO) in the same series; selection depends on the specific control logic requirements. It has 3 main contacts, a rated current of 7A, a 3kW load capacity under AC-3 conditions, and a maximum operating voltage of 690V AC. With its compact S00 minimum frame and screw terminal design, it is ideal for dense installation in low-voltage control panels with limited space.

Core Product Advantages and Features

12V DC low voltage coil

This low-voltage specification, which is less common in the same series, is suitable for vehicle-type electrical systems or 12V DC battery-powered control circuits.

1 set of normally closed auxiliary contacts

Suitable for power outage interlock or safety interlock signal design, and can be used in conjunction with 1BA41(1NO).

No need to install an additional power supply module

It directly corresponds to a 12V DC control power supply, eliminating the cost and potential for failure associated with 24V to 12V power conversion devices.

S00 minimum frame, screw terminals

Its compact size makes it suitable for dense installation and maintenance of low-voltage control panels in areas with limited space.

project	Specification
Product Type	Siemens SIRIUS 3RT2 Series 3-Pole Electric Contactor
Frame size	S00 (the smallest frame in this series)
coil voltage	12V DC
Auxiliary contact	Group 1 normally closed (1NC)
Rated operating current Ie (AC-3, 400V)	7 A
Rated operating power (AC-3, 400V)	3 kW
Maximum rated operating voltage	690V AC
Terminal type	Screw terminal block (SCRW)
External dimensions (width x height x depth)	Approximately 45 x 58 x 73 mm
Main contact pole number	3 poles
Major Certifications	RoHS compliant
country of origin	Germany
Remark	Verification confirmed that it is a 12V DC coil, a complementary sister model to the 1BA41(1NO) in the same series.

Recommend

3RT2015-1BB42

The 3RT2015-1BB42 is a Siemens SIRIUS S00 series 3-pole power contactor with a 24V DC coil, one set of normally closed (1NC) auxiliary contacts, rated at 7A, 3kW/400V, and is the most commonly available standard specification on the market.

3RT2015-1AP02

The 3RT2015-1AP02 uses a 230V AC standard coil, has one set of normally closed (NC) auxiliary contacts, and a 7A/3kW load capacity. It is suitable for small three-phase motor starting circuits that require interlocking protection wiring. Its S00 form factor saves space.

3RT2015-1AP01

The 3RT2015-1AP01 coil is also 230V AC, but its auxiliary contacts are one set of normally open (NO), making it suitable for action feedback or interlocking signal applications. The main circuit is 7A/3kW, and the S00 is compact and easy to install.