3RT20151BB420CC0

The S00 frame miniature contactor features a 24V DC coil with screw terminals and only one set of normally closed (1NC) auxiliary contacts. This streamlined contact design makes it suitable for simple interlocking circuits that only require a power outage report.

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Siemens 3RT2015-1BB42-0CC0 DC Contactor 24VDC Screw Terminal 1NC

Product Positioning

The 3RT2015-1BB42-0CC0 is part of the SIRIUS 3RT2015 S00 minimum frame series. It features a 3-pole main contact AC-3 rated 7A, approximately 3kW at 400V, with a 24V DC coil and screw terminals. Unlike the 2NO+2NC fixed auxiliary contact models, this model has only one set of normally closed (1NC) auxiliary contacts. The fewer contacts result in a more streamlined size and wiring, making it suitable for basic interlocking circuits that only require reporting "not started" or "tripped" states. This reduces control box wiring complexity when no additional signal points are needed. The North American distributor, buymybreaker, also indicates that it can withstand up to 600V in the local market; however, this data comes from only one source, and it is recommended to use the IEC rated 690V insulation voltage as the primary design basis. Regarding the order suffix "-0CC0," no publicly available functional differences are currently found; it is only confirmed as a factory version suffix.

Core Product Advantages and Features

24V DC coil

The coil voltage is 24V DC, and the main contact can be driven directly by the PLC output or a 24V control power supply.

Screw terminals

The main circuit uses traditional screw terminals, and the wiring and maintenance methods are compatible with existing on-site construction methods.

Simplified 1NC auxiliary contacts

It has only one set of normally closed auxiliary contacts built in, and the number of contacts is small, making it suitable for simple circuit designs that only require basic power outage feedback.

North American withstand voltage 600V (single source)

Some North American distributors indicate that the insulation can withstand up to 600V, but no second source has been found to confirm this, and it is still recommended to design with an insulation class of 690V.

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	1NC
Terminal type	Screw terminals
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	-0CC0 (factory version code; details of the differences are not specified in publicly available information)

3RT20151BB420CC0

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