3RT1066-6NB36

The Siemens SIRIUS 3RT10 series S10 large frame contactor, AC-3 rated 300A, 160kW (400V), adopts the same electronic operating mechanism and has a PLC interface, but the power supply is about 20-33V (approximately 24V) AC/DC, which is a different voltage classification from the 200-277V of the 6NP36.

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Photos of the Siemens SIRIUS 3RT1066-6NB36 electronic operating mechanism large contactor.

Product Positioning

The 3RT1066-6NB36 and 6NP36 are both Siemens SIRIUS S10 large-base electronic contactors. The difference lies in the power supply voltage level of the operating mechanism: the 6NB36 is approximately 20-33V (approximately 24V) AC/DC, which is suitable for direct driving with a 24V control power supply and has a PLC interface, eliminating the need for additional power conversion. It is suitable for automated distribution panels with a 24V control system as the main component.

Core Product Advantages and Features

Electronic operating mechanism, 24V voltage rating

The power supply voltage is approximately 20-33V AC/DC, which is a different voltage classification from the 200-277V of 6NP36.

PLC Interface Design

The electronic module can be directly connected to the PLC control system, simplifying wiring design.

S10 large frame, 300A/160kW

The main circuit AC-3 is rated at 300A and 160kW (400V), the same as the 6NP36 in the same series.

Standard auxiliary contacts

Built-in 2NO+2NC instantaneous auxiliary contacts facilitate loop interlocking and signal feedback.

Suitable for 24V control systems

It eliminates the need for an additional power conversion module and directly drives the operating mechanism with a 24V power supply.

Original factory authorized supplier

Kenxin Motors is an authorized distributor of Siemens, providing genuine products, warranty, and technical support.

project	Specification
series	SIRIUS 3RT10 Large Electric Contactor
Base size	S10
Extreme number	3 poles
Main contact type	3 sets of normally open (NO)
AC-3 Rated Current/Power (400V)	300 A / 160 kW
Auxiliary contact	2NO + 2NC instantaneous contact
Operating mechanism type	Electronic operating mechanism with PLC interface
Control the power supply voltage	Approximately 20...33V AC/DC (close to 24V level)
Main circuit wiring method	Connector bus (busbar)
Difference from 6NP36	The operating mechanism has a different power supply voltage level (20-33V vs. 200-277V), but the other main circuit specifications are the same.

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