3-Phase Motor Starter with Bimetal Relay and Sheet Steel Housing

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When it comes to controlling motors in industrial settings, selecting the right motor starter is crucial. Motor starters are devices that are designed to control the operation of electric motors. They are used in a variety of industrial applications where electric motors are involved, such as conveyor systems, hydraulic pumps, and more. The Siemens Sirius 3TW DOL Starter is one such device that is commonly used in industrial settings.

The Sirius 3TW DOL Starter is designed for use with 3-phase motors that have a rating of up to 5 horsepower or 3.7 kW and operate on 415V AC power. It is a Direct-On-Line (DOL) starter, which means that it provides full voltage to the motor during starting. It is also equipped with a built-in bimetal relay and an SPP relay range of 6.3-10A. The coil voltage of the starter is 415V AC and it comes in a sheet steel housing.
Siemens Sirius 3TW DOL Starter, Motor Rating: 5HP, 3.7KW, 3 Phase, 415V AC - DOL/Star Delta Starter - Motor Starter - Control Gear and Signalling Devices


The Sirius 3TW DOL Starter is an important component in industrial motor control systems, as it helps to protect the motor from overloading and overheating. The built-in bimetal relay in the starter helps to monitor the temperature of the motor and protects it from overheating. If the temperature of the motor exceeds a certain limit, the relay will trigger and shut down the starter, preventing damage to the motor.

The SPP relay range of the starter is also an important feature, as it helps to protect the motor from overloading. The SPP relay is a type of overload protection device that is designed to trip the starter if the current drawn by the motor exceeds a certain limit. This helps to prevent damage to the motor and extends its lifespan.

The coil voltage of the Sirius 3TW DOL Starter is also worth mentioning. The starter operates on 415V AC, which is the standard voltage used in 3-phase industrial power systems. This makes it easy to integrate the starter into existing motor control systems without the need for additional transformers or voltage converters.

In terms of construction, the Sirius 3TW DOL Starter comes in a sheet steel housing. This makes it rugged and durable, capable of withstanding harsh industrial environments. The housing also provides protection against dust, moisture and other environmental hazards that could affect the operation of the starter.

In conclusion, if you are looking for a reliable and efficient motor starter for your industrial motor control system, the Siemens Sirius 3TW DOL Starter is definitely worth considering. It provides full voltage to the motor during starting, while also providing protection against overloading and overheating. The built-in bimetal relay and SPP relay range are important safety features that help to extend the lifespan of the motor. The starter also operates on standard 415V AC power, making it easy to integrate into existing motor control systems.

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