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Benshaw soft starters are designed from the ground up to perform dependably … even in the harshest industrial environments. We offer best-in-class solutions for continuous duty applications, hazardous locations/conditions, corrosive environments and high vibration operations.
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RX4E Series Packaged Soft Starters with ATL Bypass

Ratings from 200 - 575V up to 600HP

Reliable Combination Starters for Critical Applications

Benshaw RX4E Packaged Soft Starters provide solid state reduced voltage starting for normal operation and full voltage emergency backup starting with complete electronic motor protection at the flip of a switch. The unique, dual redundant design of our RX4E Series soft starter is ideal for standard and heavy duty soft start applications where downtime is extremely disruptive to production operations and cannot be tolerated.

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Standard Features

  • NEMA 12, combination/circuit breaker
  • 450% — 30 seconds rated solid state starter, UL certified and listed
  • 125% continuous duty rated solid state starter, UL certified and listed
  • Selector switch for selecting solid state or full voltage operation mounted inside enclosure
  • Full HP rated bypass contactor with a 1.15 service factor, wired for normal bypass operation and full voltage start and run operation, with normally open auxiliary contact
  • Separately mounted SPE Series overload relay wired for full voltage start and run operation.
  • 110 volt control power transformer with primary and secondary fuses
  • Door-mounted keypad
  • Door-mounted run indicating light
  • Door-mounted local-off remote switch
  • Door-mounted fault indicating light
  • Door-mounted overload reset
  • Terminal strip mounted inside enclosure for remote start/stop connection
  • Auxiliary relay with (4) Form C run contacts
  • Analog I/O
  • 1 Form C fault contact
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Product Details

SKU Part Number Product Details Webstore Link
2123539 RX4E-050-480-12KP-HB RX4E Combination Soft Starter with MX4 Technology (50HP, 480V Heavy Duty - 65A max - NEMA 12) 65k US Webstore
2123540 RX4E-050-480-3RKP-HB RX4E Combination Soft Starter with MX4 Technology (50HP, 480V Heavy Duty - 65A max - NEMA 3R) 65k US Webstore
2123541 RX4E-075-480-12KP-HB RX4E Combination Soft Starter with MX4 Technology (75HP, 480V Heavy Duty - 96A max - NEMA 12) 65k US Webstore
2123542 RX4E-075-480-3RKP-HB RX4E Combination Soft Starter with MX4 Technology (75HP, 480V Heavy Duty - 96A max - NEMA 3R) 65k US Webstore
2123543 RX4E-100-480-12KP-HB RX4E Combination Soft Starter with MX4 Technology (100HP, 480V Heavy Duty - 124A max - NEMA 12) 65K US Webstore
2123544 RX4E-100-480-3RKP-HB RX4E Combination Soft Starter with MX4 Technology (100HP, 480V Heavy Duty - 124A max - NEMA 3R) 65k US Webstore
2123545 RX4E-125-480-12KP-HB RX4E Combination Soft Starter with MX4 Technology (125HP, 480V Heavy Duty - 156A max - NEMA 12) 65k US Webstore
2123546 RX4E-125-480-3RKP-HB RX4E Combination Soft Starter with MX4 Technology (125HP, 480V Heavy Duty - 156A max - NEMA 3R) 65k US Webstore
2123547 RX4E-150-480-12KP-HB RX4E Combination Soft Starter with MX4 Technology (150HP, 480V Heavy Duty - 180A max - NEMA 12) 65k US Webstore
2123548 RX4E-150-480-3RKP-HB RX4E Combination Soft Starter with MX4 Technology (150HP, 480V Heavy Duty - 180A max - NEMA 3R) 65k US Webstore
2123549 RX4E-200-480-12KP-HB RX4E Combination Soft Starter with MX4 Technology (200HP, 480V Heavy Duty - 240A max - NEMA 12) 65K US Webstore
2123550 RX4E-200-480-3RKP-HB RX4E Combination Soft Starter with MX4 Technology (200HP, 480V Heavy Duty - 240A max - NEMA 3R) 65K US Webstore
2123551 RX4E-250-480-12KP-HB RX4E Combination Soft Starter with MX4 Technology (250HP, 480V Heavy Duty - 302A max - NEMA 12) 65k US Webstore
2123552 RX4E-250-480-3RKP-HB RX4E Combination Soft Starter with MX4 Technology (250HP, 480V Heavy Duty - 302A max - NEMA 3R) 65k US Webstore
2123553 RX4E-300-480-12KP-HB RX4E Combination Soft Starter with MX4 Technology (300HP, 480V Heavy Duty - 361A max - NEMA 12) 65k US Webstore
2123554 RX4E-300-480-3RKP-HB RX4E Combination Soft Starter with MX4 Technology (300HP, 480V Heavy Duty - 361A max - NEMA 3R) 65k US Webstore
2126626 RX4E-400-480-12KP-HB RX4E Combination Soft Starter with MX4 Technology (400HP, 480V Heavy Duty - 477A max - NEMA 12) 65k US Webstore
2126629 RX4E-400-480-3RKP-HB RX4E Combination Soft Starter with MX4 Technology (400HP, 480V Heavy Duty - 477A max - NEMA 3R) 65k US Webstore
2126627 RX4E-500-480-12KP-HB RX4E Combination Soft Starter with MX4 Technology (500HP, 480V Heavy Duty - 590A max - NEMA 12) 65k US Webstore
2126630 RX4E-500-480-3RKP-HB RX4E Combination Soft Starter with MX4 Technology (500HP, 480V Heavy Duty - 590A max - NEMA 3R) 65k US Webstore
2126628 RX4E-600-480-12KP-HB RX4E Combination Soft Starter with MX4 Technology (600HP, 480V Heavy Duty - 720A max - NEMA 12) 65k US Webstore
2126631 RX4E-600-480-3RKP-HB RX4E Combination Soft Starter with MX4 Technology (600HP, 480V Heavy Duty - 720A max - NEMA 3R) 65k US Webstore
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