3RW4426-1BC34

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The Siemens 3RW4426-1BC34 SIRIUS soft starter is a high-performance device designed to facilitate smooth motor startups, reduce mechanical stress, and optimize energy efficiency in industrial automation systems. This premium soft starter supports a 3-phase motor with an amperage rating of 68 to 77 A and can handle motor power up to 75 hp (55 kW). Built with reliable screw-type terminals and robust electronics, it operates within a voltage range of 200 to 460 VAC, ensuring versatility across various applications. The compact unit features an automatic/manual reset, integrated bypass contact system, and overload relay for built-in motor protection, making it ideal for demanding industrial environments.

Key Features of Siemens 3RW4426-1BC34

  • Amperage rating: 68/77 A with overload protection for motor reliability
  • Voltage range: 200–460 VAC suitable for many industrial motors
  • Supports motor power up to 75 hp providing high capacity
  • 3-phase operation with 3 poles for balanced control
  • Integrated bypass contact system to reduce energy losses during run mode
  • Automatic and manual reset options for operational flexibility
  • Thyristor-based design for efficient soft starting and protection
  • Screw terminals for secure electrical connections
  • Operating temperature range from 0 to 60 °C for diverse environments
  • Compact dimensions: 192 x 170 x 270 mm for space-saving installation

Technical Specs of 3RW4426-1BC34

Explore Siemens 3RW4426-1BC34 specifications for detailed parameters to ensure system compatibility.

Parameter Value
Amperage Rating 68–77 A
Voltage Rating 200–460 VAC
Motor Power Up to 75 hp
Phases 3-phase
Poles 3
Reset Type Automatic/Manual
Enclosure Type IP00
Operating Temperature 0 to 60 °C
Dimensions (H x W x D) 192 x 170 x 270 mm
Connection Type Screw Terminals

Applications / Use Case

This Siemens 3RW4426-1BC34 is commonly used in industrial automation, process control, and production line systems worldwide. It is ideal for managing motor startups in packaging machines, conveyors, pumps, and compressors, helping reduce mechanical wear and electrical stress. Its built-in motor protection and adjustable current limitations make it suitable for factory control panels and motion control setups that demand reliable, efficient soft starting and stopping of induction motors.

Price & Availability

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3RW4426-1BC34

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Does it come with a warranty?

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

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All products sold are New & Unused.

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

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