3RA23458XB301AG2

S3 size forward/reverse contactor combination, rated 37kW/400V, 80A, with built-in 2x1NO auxiliary contacts and mechanical and electrical interlocks, 110V AC coil power supply, specially designed for forward/reverse switching of medium and large three-phase motors, and can withstand 1000V insulation class application environments.

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Siemens 3RA2345-8XB30-1AG2 S3 forward and reverse contactor combination

Product Positioning

The 3RA2345-8XB30-1AG2 is a SIRIUS 3RA23 series S3 size forward and reverse contactor combination. It pre-assembles two sets of interlocking contactors and completes the internal wiring, and can be directly used in the forward and reverse control circuit of large three-phase motors.

Core Product Advantages and Features

Electromechanical double interlock

A mechanical interlocking circuit combined with an electrical interlocking circuit is used to prevent short circuits caused by the simultaneous engagement of two sets of contactors in both forward and reverse directions.

S3 High Current Carrying Capacity

With a rated current of 80A, it can be used for AC-3 operation of a 37kW motor at 400V.

110V AC coil specifications

The coil has a rated voltage of 110V and a frequency of 50/60Hz, which makes it convenient to use the existing control circuit power supply.

Factory pre-wiring

The power and control wiring between the two sets of contactors is completed at the factory, which can shorten the time required for on-site installation.

project	Specification
Model (MLFB)	3RA2345-8XB30-1AG2
Product Type	SIRIUS forward and reverse contactor combination
Rated power (AC-3)	37 kW / 400 V
Rated current (AC-3)	80 A
Frame size	S3
coil voltage	110 V AC, 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
Rated insulation voltage	1000 V
Wiring method	Screw terminals
Installation method	35mm DIN rail

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