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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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MX4PB Series Packaged Soft Starters

Ratings from 240 - 460V up to 700HP

Prepackaged Starters with Integral Run Duty Bypass

Benshaw MX4PB Packaged Soft Starters provide solid state reduced voltage starting for standard duty or heavy duty operation. Advanced protection features, integral run duty bypass and 65kAIC rating make this the ideal soft starter for nearly any application.

MX4PB soft starters are stocked for same day shipment in either a NEMA 4 or NEMA 12 enclosure. Benshaw’s EMX4i programmable motor controller provides precise digital starting and stopping, motor protection, metering, diagnostics and communications … standard.

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Standard Features

Benshaw MX4PB Series Soft Starters are pre-configured and stocked for same day shipment as follows:

  • Combination circuit breaker
  • Rotary disconnect operator
  • Bypass contactor
  • NEMA 4 or 12 enclosure
  • 480 V
  • Standard 120 V control power transformer
  • Service entrance rated with circuit breaker
  • Door-mounted keypad

Configure the MX4PB to Fit Your Application

MX4PB Series Soft Starters can be modified to fit your application requirements. Simply select a standard unit, then add an alpha board and/or other options, as needed. We’ll modify the stock unit and package it for next day shipment.

  • Voltage (240 V/480 V)
  • Duty rating (standard/heavy duty)
  • Disconnect (none/circuit breaker)
  • HP (20 – 700 HP)
  • Control options
  • Space heater with thermostat
  • Remote keypad kit (keypad, card & cable)
  • Communication interface options
  • Fingerguard kit

Product Details

SKU Part Number Description Webstore Link
2120721 MX4PB-HD-015-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (15HP, 240V Heavy Duty - 42A max) 65K US Webstore
2120722 MX4PB-HD-020-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (20HP, 240V Heavy Duty - 54A max) 65K US Webstore
2120724 MX4PB-HD-030-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (30HP, 240V Heavy Duty - 80A max) 65K US Webstore
2120725 MX4PB-HD-030-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (30HP, 460V Heavy Duty - 40A max) 65K US Webstore
2120727 MX4PB-HD-050-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (50HP, 240V Heavy Duty - 130A max) 65K US Webstore
2120728 MX4PB-HD-050-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (50HP, 460V Heavy Duty - 65A max) 65K US Webstore
2120729 MX4PB-HD-075-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (75HP, 240V Heavy Duty - 192A max) 65K US Webstore
2120730 MX4PB-HD-075-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (75HP, 460V Heavy Duty - 96A max) 65K US Webstore
2120731 MX4PB-HD-100-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (100HP, 240V Heavy Duty - 248A max) 65K US Webstore
2120732 MX4PB-HD-100-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (100HP, 460V Heavy Duty - 124A max) 65K US Webstore
2120733 MX4PB-HD-150-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (150HP, 240V Heavy Duty - 360A max) 65K US Webstore
2120734 MX4PB-HD-150-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (150HP, 460V Heavy Duty - 180A max) 65K US Webstore
2126965 MX4PB-HD-200-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (200HP, 240V Heavy Duty - 477A max) 65K US Webstore
2120735 MX4PB-HD-200-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (200HP, 460V Heavy Duty - 240A max) 65k US Webstore
2126966 MX4PB-HD-250-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (250HP, 240V Heavy Duty - 590A max) 65K US Webstore
2126967 MX4PB-HD-300-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (300HP, 240V Heavy Duty - 720A max) 65K US Webstore
2120736 MX4PB-HD-300-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (300HP, 460V Heavy Duty - 361A max) 65K US Webstore
2126968 MX4PB-HD-350-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (350HP, 240V Heavy Duty - 904A max) 65K US Webstore
2126956 MX4PB-HD-400-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (400HP, 460V Heavy Duty - 477A max) 65K US Webstore
2126957 MX4PB-HD-500-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (500HP, 460V Heavy Duty - 590A max) 65K US Webstore
2126958 MX4PB-HD-600-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (600HP, 460V Heavy Duty - 720A max) 65K US Webstore
2126959 MX4PB-HD-700-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (700HP, 460V Heavy Duty - 904A max) 65K US Webstore
2120737 MX4PB-SD-015-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (15HP, 240V Standard Duty - 42A max) 65K US Webstore
2120738 MX4PB-SD-020-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (20HP, 240V Standard Duty - 54A max) 65K US Webstore
2120739 MX4PB-SD-020-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (20HP, 480V Standard Duty - 27A max) 65k US Webstore
2120740 MX4PB-SD-030-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (30HP, 240V Standard Duty - 80A max) 65K US Webstore
2120741 MX4PB-SD-030-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (30HP, 460V Standard Duty - 40A max) 65K US Webstore
2120743 MX4PB-SD-050-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (50HP, 240V Standard Duty - 130A max) 65K US Webstore
2120744 MX4PB-SD-050-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (50HP, 460V Standard Duty - 65A max) 65K US Webstore
2120745 MX4PB-SD-075-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (75HP, 240V Standard Duty - 192A max) 65K US Webstore
2120746 MX4PB-SD-075-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (75HP, 460V Standard Duty - 96A max) 65K US Webstore
2120747 MX4PB-SD-100-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (100HP, 240V Standard Duty - 248A max) 65K US Webstore
2120748 MX4PB-SD-100-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (100HP, 460V Standard Duty - 124A max) 65K US Webstore
2120749 MX4PB-SD-150-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (150HP, 240V Standard Duty - 360A max) 65K US Webstore
2120750 MX4PB-SD-150-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (150HP, 460V Standard Duty - 180A max) 65K US Webstore
2120751 MX4PB-SD-200-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (200HP, 240V Standard Duty - 240A max) 65K US Webstore
2120752 MX4PB-SD-200-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (200HP, 460V Standard Duty - 240A max) 65K US Webstore
2126969 MX4PB-SD-250-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (250HP, 240V Standard Duty - 590A max) 65K US Webstore
2126970 MX4PB-SD-300-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (300HP, 240V Standard Duty - 720A max) 65K US Webstore
2120753 MX4PB-SD-300-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (300HP, 460V Standard Duty - 361A max) 65K US Webstore
2126971 MX4PB-SD-350-2-4-HB MX4PB Combination Soft Starter with EMX4i Technology (350HP, 240V Standard Duty - 904A max) 65K US Webstore
2120754 MX4PB-SD-400-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (400HP, 460V Standard Duty - 477A max) 65K US Webstore
2126960 MX4PB-SD-500-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (500HP, 460V Standard Duty - 590A max) 65K US Webstore
2126961 MX4PB-SD-600-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (600HP, 460V Standard Duty - 720A max) 65K US Webstore
2126962 MX4PB-SD-700-4-4-HB MX4PB Combination Soft Starter with EMX4i Technology (700HP, 460V Standard Duty - 828A max) 65K US Webstore
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Contact us to discuss your specific soft starter requirements with the Benshaw team

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