siemens
Siemens SIRIUS 3RM1 Reversing Motor Starter
Model: 3RM1307-1AA04
4-hour response · Pricing in SAR · Delivery across all KSA regions
3RM1307-1AA04 — Siemens SIRIUS 3RM1 Reversing Motor Starter
The Siemens SIRIUS 3RM1 is the compact direct-on-line (DOL) and reversing motor starter module for the SIMATIC ET 200SP distributed I/O system and standalone installation, integrating motor starter, overload protection, and control interface in a single narrow module without separate contactor, overload relay, and auxiliary contact components. At 45 mm wide for a 7.5 A non-reversing version and 45 mm for a 5.5 A reversing version, the 3RM1 delivers a mechanical and electrical interlock between forward and reverse directions in the space that a conventional reversing starter with two contactors and interlocking relays would occupy at four to five times the panel width.
The 3RM1 connects directly to SIMATIC ET 200SP in the AS-Interface or ET 200SP input/output system for full direct motor start/stop, direction, and fault reset control from the PLC program without additional I/O wiring. The integrated electronic overload protection is thermally modelled and responds within seconds of motor overloading, eliminating the separate 3RU overload relay and its calibration adjustment. The 3RM1's solid-state output also eliminates the mechanical contacts that cause contactor wear and maintenance on conventional starters — increasing maintenance intervals and reducing panel maintenance downtime in multi-motor conveyor and materials handling systems.
In Saudi Arabia, the 3RM1 is specified for ET 200SP-integrated machine and conveyor automation projects at SABIC and ARAMCO facilities, where dense motor control requirements at machine-level distributed control stations benefit from the 3RM1's compact width. Manufacturing automation integrators and machine builders supplying Saudi OEM machine tools, packaging machines, and conveyor systems use 3RM1 for the individual axis motor starters in decentralised machine control architectures.
Razz Middle East stocks SIRIUS 3RM1 DOL and reversing starters for immediate delivery in Saudi Arabia with ET 200SP configuration support.
Technical Specifications
Full specifications for the 3RM1307-1AA04
- Type
- DOL (non-reversing) and reversing starter
- Current Range
- Up to 7.5 A (DOL), up to 5.5 A (reversing)
- Width
- 45 mm per module
- Overload
- Electronic, integrated (thermally modelled)
- Control
- AS-Interface or ET 200SP bus
- Safety
- SIL 2 fail-safe version available
- Voltage
- 24 V DC (control), 400 V AC (motor)
- Protection
- IP20
Key Features & Benefits
- Integrated motor starter, overload protection, and mechanical/electrical interlock in 45 mm width replaces separate contactor, overload relay, and interlock wiring in a fraction of the panel space.
- Direct ET 200SP and AS-Interface bus connectivity provides full motor control from the PLC program without additional I/O wiring modules, reducing panel wiring complexity in dense motor control applications.
- Electronic overload protection with thermal modelling eliminates the separate 3RU overload relay and its calibration adjustment, simplifying commissioning and maintenance.
- Solid-state output eliminates mechanical contact wear, increasing motor starter maintenance interval beyond the 10 million operating cycle limit of conventional contactors.
- SIL 2 fail-safe version with safe torque-off (STO) output provides hardwired safety stop function directly from the 3RM1, eliminating additional safety relay hardware in safety-relevant motor applications.
- Reversing starter with hardwired mechanical interlocking prevents simultaneous forward and reverse energisation, providing failsafe direction control in the most compact reversing starter format available.
- Diagnostic LEDs on the 3RM1 front face display motor running state, overload condition, and communication fault — enabling rapid maintenance identification on dense multi-motor panels without PLC diagnostic access.
Industrial Applications in Saudi Arabia
- ET 200SP-integrated conveyor and materials handling motor control at SABIC and ARAMCO process facilities, where 3RM1 modules provide PLC-integrated motor starters in minimal panel space.
- Machine tool and packaging machine motor control at Saudi OEM machine builders, where 3RM1 reversing starters provide decentralised axis motor control in compact machine control cabinets.
- Conveyor belt bidirectional motor control in automated warehouses and distribution centres in Riyadh and Jeddah, where reversing starters with electronic overload protection eliminate separate contactor interlocking wiring.
- HVAC VAV actuator motor control in commercial building automation panels, where 3RM1 compact width enables high motor count in panel designs.
- NWC water treatment valve actuator motor control panels, where 3RM1 reversing starters drive valve actuator motors with position feedback integration to the ET 200SP I/O system.
- Process industry agitator and pump reversing motor starters at Saudi food and pharmaceutical manufacturing, where electronic overload and reversing control in one device simplify panel design.
- Airport and transport infrastructure baggage conveyor motor control, where high motor count and PLC integration requirements favour 3RM1 over conventional separate starter components.
Industrial Supplier in Saudi Arabia
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Frequently Asked Questions — 3RM1307-1AA04
Common questions from buyers in Saudi Arabia and the GCC