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Siemens 3RK1323-6BS74-3AA3 — Remote I/O & Fieldbus Modules

Siemens 3RK1323-6BS74-3AA3 reversing starter, IP65, 3 A AC-3

MPN3RK1323-6BS74-3AA3

Siemens 3RK1323-6BS74-3AA3 reversing starter, solid-state, IP65, 3 A at AC-3 400 V, 4 digital inputs, AS-i communication, current production.

$958.85Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RK1323-6BS74-3AA3 — Identification
ParameterValue
Product designreversing starter
3RK1323-6BS74-3AA3 — Communication
ParameterValue
PROFIBUS DP supportNo
PROFINET supportNo
AS-Interface supportYes
3RK1323-6BS74-3AA3 — I/O
ParameterValue
Digital inputs4
Digital input signals2
Digital output signals0
Digital inputs parameterizableYes
Digital outputs parameterizableNo
3RK1323-6BS74-3AA3 — Electrical
ParameterValue
Rated value (DC)20.4 ... 28.8 V
Control supply voltage typeDC
Voltage typeDC
Adjustable Current Response Value Current Of The Current-Dependent Overload Release0.3 ... 3 A
Operating Voltage Rated Value400 ... 500 V
Number Of Poles For Main Current Circuit3
3RK1323-6BS74-3AA3 — Environmental
ParameterValue
Ingress protection (IP)IP65
Ambient operating temperature-20 ... +40 °C
3RK1323-6BS74-3AA3 — Mechanical
ParameterValue
Width130 mm
Depth107 mm
Height250 mm
3RK1323-6BS74-3AA3 — Specifications
ParameterValue
At 400 V rated value100 kA
At AC-3 at 400 V rated value3 A
Type Of The Motor Protectionfull motor protection

Product details

The Siemens 3RK1323-6BS74-3AA3 is a reversing starter in the 3RK1 family, designed as a solid-state switching device with full motor protection.

Power and control interface

The unit draws its control supply from the AS-i shaped cable via cutting/clamping method, with a rated DC supply of 24 V (permissible range 20.4 to 28.8 V). Four digital inputs are on board, parameterizable, with two M12 sockets for input signals; there are no digital outputs on this variant. Communication also runs over the AS-i cable — no PROFINET or PROFIBUS DP on this order code.

Mounting and connectivity

The main energy infeed and load-side outgoing feeder both use sockets conforming to ISO 23570, so the mechanical and electrical connection is standardized across the 3RK1 platform. Device addressing is via a front addressing socket, accessible with the enclosure closed. The unit is designed for direct machine mounting, not DIN rail; plan for gland-plate entry for the AS-i shaped cable.

Frequently asked questions

What is the motor rating for this reversing starter?

It is rated 3 A at AC-3 duty at 400 V, which covers small reversing motor loads up to that current — roughly a 1.5 kW induction motor at 400 V three-phase.

Does this unit support PROFINET or PROFIBUS DP?

No. Communication is via the AS-i shaped cable only — neither PROFINET nor PROFIBUS DP protocol is supported on this order code.

What is the IP rating and where can it be mounted?

IP65, so it is dust-tight and protected against water jets. It can mount directly on the machine frame or in washdown areas without a separate enclosure.

MPN
3RK1323-6BS74-3AA3