3RT2015-1BM42

The 3RT2015-1BM42 is a Siemens SIRIUS S00 series 3-pole power contactor with a 220V DC coil, one set of normally closed (1NC) auxiliary contacts, rated at 7A, 3kW/400V, and suitable for 220V DC control power supply systems.

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Siemens 3RT2015-1BM42 DC220V coil S00 3-pole 1NC auxiliary contact

Product Positioning

The 3RT2015-1BM42 is a Siemens SIRIUS 3RT2 series S00 frame 3-pole power contactor with a coil voltage of 220V DC. This relatively high-voltage DC coil specification is commonly found in substations, generator control panels, uninterruptible power systems (UPS), or industrial control circuits powered by 220V DC battery banks, eliminating the cost and potential for failure of an additional 24V DC power converter. This model is equipped with one normally closed (1NC) auxiliary contact, suitable as a signal source for power outage interlocking, fault feedback, or safety interlocking circuits. It has 3 main contacts, a rated current of 7A, and can load a 3kW/400V motor under AC-3 conditions, with a maximum withstand voltage of 690V AC. Featuring the S00 minimum frame and screw terminal design, its compact size facilitates dense placement within distribution boxes, making it a practical replacement option for 220V DC power supply applications.

Core Product Advantages and Features

220V DC high voltage coil

Suitable for substations, generator sets, or battery-powered control panels, eliminating the need for additional power converters.

1 set of normally closed auxiliary contacts

Suitable for power outage interlocking, fault feedback, or safety interlock signal design, enhancing the flexibility of control logic.

Main contact 3 poles 7A/3kW

Meets AC-3 specifications and is sufficient to directly start small three-phase motors and general pump and fan loads.

S00 minimum frame, screw terminals

Its compact size makes it easy to install and maintain densely within a DC control panel where space is limited.

project	Specification
Product Type	Siemens SIRIUS 3RT2 Series 3-Pole Electric Contactor
Frame size	S00 (the smallest frame in this series)
coil voltage	220V 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 terminals (can connect 0.5–4 mm² wires)
External dimensions (width x height x depth)	Approximately 45 x 58 x 73 mm
net weight	Approximately 0.294 kg
Mechanical life	Typical 30 million operation cycles
Insulation voltage	690V
Protection level	IP20 (front)
Major Certifications	UL, CSA, CCC, KC, EAC

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