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  • 4.38 (8)
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  • 4.38 (8)
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The Reliance Electric 50FN4042 is a 460 VAC 50/60 Hz FlexPak 3000 Non Regenerative Drive. It includes a 0-58770-411, 0-58770-420, or 0-58770-430 version regulator board.



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  • Part Number: 50FN4042
  • SKU: 50FN4042RE
  • Manufacturer: Reliance Electric
  • Series: FlexPak 3000

50FN4042 Technical Specifications

Part Number 50FN4042
Series FlexPak 3000
Manufacturer Reliance Electric
HP 50 HP
Input Voltage 460 VAC
Hz 50/60 Hz
Additional Features Non-Regen

Product Description

The 50FN4042 module is one of many DC drives that Reliance Electric made for the FlexPak 3000 series. The 50FN4042 DC drive is not in production anymore, but we may still have it in stock at AX Control. The 50FN4042 DC drive’s availability in our stock is displayed on this page of our website, but you can always talk to a staff member during our business hours for more information regarding its availability at AX Control.

The 50FN4042 DC drive is a non-regenerative, three-phase drive that is able to switch between the input rating of 230 VAC and the input rating of 460 VAC. When operating at 230 VAC, the 50FN4042 DC drive will have a horsepower rating of 25 HP, a current amperage at rated field of 15 A, a full load current amperage at rated DC armature of 93 A, and a current amperage at full load RMS AC line of 80 A. When the 50FN4042 DC drive is operating at 460 VAC, on the other hand, it will have a horsepower rating of 50 HP, a rated field current amperage of 15 A, a full load rated DC armature current amperage of 86 A, and a full load RMS AC line current amperage of 74 A.

Like all of the other DC drives in the FlexPak 3000 series, the 50FN4042 model has an operator interface module, or an OIM, which is made up of a keypad and an LCD display. However, the 50FN4042 DC drive can be controlled using either the OIM or a remote control station that is mounted nearby.

The 50FN4042 DC drive weighs a total of 58 lbs. or 26.4 kg.

Frequently Asked Questions about 50FN4042

What type of enclosure does the 50FN4042 have?
The 50FN4042 is an open chassis style drive that is not compatible with any enclosures. The FlexPak 3000 series has a enclosure modification kit that allows the 50FN4042 to be compatible with the NEMA 1 and NEMA 12K enclosures. 
Can AX Control repair my 50FN4042?
Yes, AX Control can complete board level repairs on a variety of devices including the 50FN4042. Once all repairs are made our technicians will preform a fully function test on your device to ensure it is fully functioning once again. 
Does the 50FN4042 have an ISO certification?
The 50FN4042 is a ISO certified drive which means that it has predicatble and depentable performance. 
Is there I/O expansion cards available for the 50FN4042?
There are available I/O expansion cards that are compatible with the 50FN4042. The I/O expansion cards gives the drive additional features such as present speeds and outer control loops. 

Reviews For 50FN4042

Internal Review

The 50FN4042 has the newest version regulator board and can be programmed directly from the keypad without a remote programmable controller. The reason we've only given the 50FN4042 4 stars is that it is non-regen and because it requires a number of additional option boards to functions. Depending on the application, the 50FN4042 needs a Field Regulator Assembly and a communication card in order to serve it's role on a production line. These assemblies must be purchased and installed separately. - AX Control Lead Technician

Repair Services For 50FN4042

Type Lead Time Price Action
Repair Service 1-2 weeks $3842

Our highly skilled technicians can repair your 50FN4042. All of our repairs come with a 3 Year AX Control Warranty. Please contact us for additional information about our repair process. To receive the repair pricing and lead time listed above please process your repair order via our website. The following repair options may be available upon request:

  • 48-72hr Rush Repair
  • Detailed Repair Reports
  • AX Control Certificate of Warranty

AX Control Warranty Info

All products we sell are backed by our unparalleled warranty. A warranty certificate will be provided with your order upon request.
All PLCs, HMIs, and Turbine Control Boards: 3 Years
All AC/DC and Servo Drives: 2 Years
All Motors: 1 Year
Learn More

50FN4042 Manuals, White Papers, Data Sheets, and Troubleshooting