3RM1302-2AA04

The 3RM1302-2AA04 belongs to the Siemens SIRIUS 3RM1 series, with a rated current of 0.4~2.0A, a power reference of approximately 0.09~0.75kW, a control power supply of 24VDC, and spring-loaded terminals for both the main and control circuits. It features built-in SIL3/PL e failure safety reversible start and a compact, space-saving design.

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Product image of Siemens SIRIUS 3RM1 Hybrid Reversible Motor Starter 3RM1302-2AA04

Product Positioning

The 3RM1302-2AA04 is a Siemens SIRIUS 3RM1 series safety-type hybrid reversible motor starter with a rated current of 0.4~2.0A. It uses semiconductor starting combined with relay contact operation and has a built-in SIL3/PL e safety rating. It is suitable for small three-phase motor forward and reverse control applications that require partial safety stop function.

Core Product Advantages and Features

Hybrid switching technology

The system uses semiconductor contactless switching at startup and switches to mechanical relay contacts during operation, balancing smooth startup with energy saving during long-term operation and extending contact life.

Built-in SIL3/PL e security level

The device itself has a fail-safe reversible start function, reaching the SIL3/PL e Cat.4 safety level, and can be used for local safety applications without the need for an external safety relay.

Reversible start function

A single device can perform forward and reverse rotation switching of the motor and overload protection, making it suitable for applications such as pumps, valves, and conveyors that require reversing control.

Adjustable electronic overload protection

The overload release current can be adjusted within the range of 0.4~2.0A, and can be finely adjusted according to the actual rated current of the motor, providing electronic overload protection.

Integrated diagnostic and testing functions

The main body is equipped with LED status indicator lights and a TEST/RESET button, which can quickly determine the operating status, tripping status, etc., and shorten the troubleshooting time.

22.5mm narrow body rail mounting

It adopts standard 35mm DIN rail mounting, and the housing width is only 22.5mm, and the panel configuration saves more internal space in the control box.

Spring-loaded terminal wiring design

Both the main and control circuits use spring-loaded terminals, and the control power supply is 24VDC, which facilitates wiring construction, maintenance, and replacement.

project	Specification
Rated current range (adjustable)	0.4~2.0A
Motor power reference value (400V)	Approximately 0.09~0.75kW
Control power supply voltage	24VDC
Terminal block type	Both the main and control circuits use spring-loaded terminals.
Maximum rated operating voltage	500V AC-3
Protection level	IP20
Switching technology	Hybrid type (semiconductor starting + relay contact operation)
auxiliary contacts	1 NO + 1 NC
Ambient temperature range	-25°C ~ +60°C
Casing width	22.5mm (standard rail mounting)
Main applicable standards	IEC/EN 60947-4-2
Diagnostic function	LED status indicator + TEST/RESET button
Start-stop method	Reversible start-up with forward and reverse rotation, electronic overload protection.
Security level	SIL3 / PL e (Cat.4) Failure-Safe Reversible Startup
Product Series Positioning	The 3RM13 series (fail-safe) shares the same frame as the 3RM12 series.

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