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Dynamic Braking Kit 912FK0250 for FlexPak 3000 DC Drive from Reliance Electric. This model is used with a model that runs on 25 HP or 230 VAC. The total Ohms for this unit is 1.212.



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  • Part Number: 912FK0250
  • SKU: 912FK0250RE
  • Manufacturer: Reliance Electric
  • Series: FlexPak 3000

912FK0250 Technical Specifications

Part Number 912FK0250
Series FlexPak 3000
Manufacturer Reliance Electric
Instruction Manual D2-3374-4
Used in Conjunction With FlexPak 3000 DC Drives
FlexPak 3000 Drive Horsepower 25 HP

Product Description

Model 912FK0250 is a Dynamic Braking Kit for 230 VAC FlexPak 3000 Digital DC Drives without NEMA 1 enclosures manufactured by Reliance Electric. The associated drive horsepower for this kit is 25 HP. This kit includes a contactor, a suppressor, a resistor assembly, and an enclosure. The dynamic braking process is not controlled by software. Instead, a command or drive fault initiates the process by closing the DB contactor. The DB resistor then connects across A1 and A2 of the motor armature, which creates a generator that causes braking torque in the motor. The DB resistor then absorbs energy, and the temperature goes up.

The purpose of the 912FK0250 model, when used alongside the FlexPak 3000 drives, is to provide different hardware types, such as braking grids. The braking grids on the model are to provide dynamic braking upon stop of the associated FlexPak 3000 drive. As mentioned above, the horsepower for this kit is 25 HP; when the motor on the FlexPak 3000 drive is running normally, the DB contactor, which is typically closed, will be open, and the dynamic braking resistor/dynamic braking grid will be disconnected from the drive and motor. The dynamic braking of the 912FK0250 model is used to slow down the rapidly rotating DC motor as well as its full load when the motor has been disconnected from the drive. 

There are two associated manuals when using the 912FK0250 model. One is the D2-3404-2 manual, which focuses on how the 912FK0250 model will be used in conjunction with the FlexPak 3000 models. The other is the D2-3374-4 manual, which focuses on the technical data and specifications of the 912FK0250 and how it is used.

Frequently Asked Questions about 912FK0250

How is the 912FK0250 initiated when it is installed?
The 912FK0250 is disconnected when the FlexPak 3000 drive's motor is running as it should. When the drive's load disconnects, the 912FK0250 takes over. The 912FK0250 will be initiated using a drive fault or stop command/coast command. 
Can the 912FK0250 be used with a drive in a NEMA 1 enclosure?
Yes, the 912FK0250 is compatible with FlexPak 3000 drives in a NEMA 1 enclosure. There are special installation instructions for a drive within a NEMA 1 enclosure that can be found in the manual, D2-3374-4. 
Is the 912FK0250 compatible with a FlexPak 3000 drive with a HP of 25?
Yes, the 912FK0250 is compatible with a FlexPak 3000 drive with an HP of 25. It should be noted that a sister model is available if wanting to operate the model with an HP of 25 but at a greater alternating current. The associated sister drive is 913FK0200. 

If the resistor goes out on my 912FK0250 model, can it be replaced?

Yes! The original resistor assembly part number is 800160-20RB, and the replacement part number is 48267-B2.

Reviews For 912FK0250

Internal Review

There is a specific contactor used when operating this model; the contactor is labeled 705310-141A. This contactor will provide the necessary horsepower and voltage rating required when operating this model, as well as motor armature amperage and volts of direct current (VDC). The associated motor armature amps are 93 A, and VDC is 240 VDC. - AX Control Tech

Repair Services For 912FK0250

Type Lead Time Price Action
Repair Service 1-2 weeks $3914

Our highly skilled technicians can repair your 912FK0250. 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
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