3RA23388XB301NB3

The S2 size forward and reverse contactor combination has a rated current of 80A, corresponding to a 37kW motor at 400V. The coil is designed for a wide voltage range of 20-33V AC/DC, allowing direct use with PLC low-voltage output. It features both mechanical and electrical interlocking and 2x1NO auxiliary contacts.

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Siemens 3RA2338-8XB30-1NB3 S2 forward and reverse contactor combination

Product Positioning

The 3RA2338-8XB30-1NB3 is a combination of S2-size forward and reverse contactors from the SIRIUS 3RA23 series. It is powered by a wide-range 20-33V AC/DC coil and is suitable for direct use with PLCs or low-voltage control power supplies.

Core Product Advantages and Features

Wide-range coil voltage

The coil can accept power supply in the range of 20-33V AC/DC, and is compatible with various control power supply specifications.

S2 frame 37kW level

Rated current 80A, corresponding to the control requirements of an AC-3 motor of approximately 37kW at 400V.

Double interlock protection

Mechanical interlocking and electrical interlocking are used together to prevent malfunctions in the forward and reverse circuits.

Integrating auxiliary contacts

It has 2x1NO auxiliary contacts built in, which facilitates feedback of forward and reverse operation status signals.

project	Specification
Model (MLFB)	3RA2338-8XB30-1NB3
Product Type	SIRIUS forward and reverse contactor combination
Rated power (AC-3)	37 kW / 400 V
Rated current (AC-3)	80 A
Frame size	S2
coil voltage	20-33 V AC/DC, 50/60 Hz
Extreme number	3 poles (one set for forward and one set for reverse rotation)
Auxiliary contact	2 x 1 NO (one set in each direction)
Interlocking method	Mechanical interlock + electrical interlock
Wiring method	Screw terminals
Installation method	35mm DIN rail

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3RA23388XB301AN2

The Siemens SIRIUS S2 forward and reverse contactor combination has a rated current of 80A, AC-3, and is compatible with 37kW/400V motors. The coil voltage is 220V AC, 50/60Hz. It includes mechanical and electrical interlocks and two sets of auxiliary contacts, and can be used for switching applications with motors up to 50HP.

3RA23388XB301AL2

The SIRIUS S2 forward and reverse contactor combination is rated at 80A and is suitable for AC-3 level 37kW/400V motor applications. It features a standard 230V AC coil voltage and includes a double interlocking mechanism and auxiliary contacts, making it suitable for direct use in common 230V control circuits in Taiwan.