3RW4427-1BC44

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Buy genuine Siemens 3RW4427-1BC44 online for your automation system

The Siemens 3RW4427-1BC44 is a high-performance SIRIUS soft starter designed for effective motor control and protection in industrial settings. Rated to handle 93 A standard operational current and support motors up to 45 kW at 400 V, it offers reliable soft starting capabilities that reduce mechanical stress and electrical load during motor startup. This model includes an integrated bypass contact system and thyristor-based control, providing smooth acceleration and deceleration to extend the life of your motors and connected equipment. Although this product is now phased out, it remains a preferred choice for various automation applications, with the successor being the Siemens 3RW5 series. Its durability and built-in motor overload protection make it suitable for heavy-duty industrial use, providing peace of mind with enhanced operational reliability.

Key Features of Siemens 3RW4427-1BC44

  • Integrated bypass contact system for efficient motor start and run modes
  • Thyristor-controlled soft start to minimize mechanical and electrical stress
  • Intrinsic device protection including motor overload evaluation
  • Supports motor brake output for precise stopping control
  • Adjustable current limitation and external reset function for flexible operation
  • Inside-delta circuit design to facilitate installation in compact drive systems
  • Designed for operational voltages from 200 to 460 V AC, 50/60 Hz
  • Screw terminals for secure and reliable wiring connections
  • Complies with IEC standards ensuring industrial-grade safety and performance

Explore Siemens 3RW4427-1BC44 technical data for detailed parameters

Parameter Value
Operational Current (Standard) 93 A
Motor Power (400 V, 40 °C) 45 kW
Inside-delta Current 161 A
Motor Power Inside-delta 90 kW
Control Voltage 230 V AC
Connection Type Screw Terminals
Product Series SIRIUS 3RW44

Applications / Use Case

This Siemens 3RW4427-1BC44 is commonly used in industrial automation worldwide, particularly in applications requiring smooth motor starting to prevent wear and tear on mechanical systems. It is ideal for production line systems, packaging and conveyor operations, and factory control panels where precise and reliable motor management is critical. The soft starter helps enhance motor lifespan and reduces maintenance costs by controlling the starting current and torque, making it valuable for various types of machinery such as pumps, fans, compressors, and conveyors.

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3RW4427-1BC44

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Does it come with a warranty?

Yes, All products are offered wth 1-Year warranty.

What is the condition of the product?

All products sold are New & Unused.

How fast is shipping?

All products are delivered within 2-8 business days depending on our stock location.

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