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Siemens 3RK1304-5LS40-2AA3 — Remote I/O & Fieldbus Modules

Siemens SIMATIC 3RK1304-5LS40-2AA3 Motor Starter, 12 A, IP65

MPN3RK1304-5LS40-2AA3

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Siemens SIMATIC direct motor starter, 3RK1304-5LS40-2AA3, 12 A at 400 V, Trip Class 10, IP65, PROFINET/PROFIBUS, 24 V DC.

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Siemens 3RK1304-5LS40-2AA3 datasheet (PDF)

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RK1304-5LS40-2AA3 — Identification
Parameter	Value
Product designation	Motor starters
Product design	direct starter

3RK1304-5LS40-2AA3 — Communication
Parameter	Value
PROFIBUS DP support	Yes
PROFINET support	Yes
AS-Interface support	No
Bus communication	Yes

3RK1304-5LS40-2AA3 — I/O
Parameter	Value
Digital inputs	4
Digital input signals	4
Digital output signals	0
Digital inputs parameterizable	Yes
Digital outputs parameterizable	No

3RK1304-5LS40-2AA3 — Electrical
Parameter	Value
Rated value (DC)	20.4 ... 28.8 V
Control supply voltage type	DC
Rated surge voltage	6 kV
Voltage type	AC
Adjustable Current Response Value Current Of The Current-Dependent Overload Release	1.5 ... 12 A
Operating Voltage Rated Value	200 ... 400 V
Number Of Poles For Main Current Circuit	3

3RK1304-5LS40-2AA3 — Environmental
Parameter	Value
Ingress protection (IP)	IP65
Operating temperature range	-25 ... +55 °C
Storage temperature range	-40 ... +70 °C
Shock resistance	15g / 11 ms
Pollution degree	3

3RK1304-5LS40-2AA3 — Mechanical
Parameter	Value
Width	110 mm
Depth	150 mm
Height	230 mm
Mounting method	screw fixing

3RK1304-5LS40-2AA3 — Specifications
Parameter	Value
At 400 V rated value	100 000 A
At AC-3 at 400 V rated value	5 500 W
Reverse Starting	No
Type Of The Motor Protection	solid-state
Trip Class	CLASS 10

Product details

Dimensions: 230 mm high, 110 mm wide, 150 mm deep. Screw fixing, no DIN rail adapter needed. Shock resistance 15 g / 11 ms, vibration 2 g — survives the ride on a machine frame or conveyor section without relay chatter.