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ASCO Avtron 4600 Stationary Load Bank (500-1250kW)

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See Below for Standard Models or Call for Quote
1,800.00 LBS

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The ASCO Avtron 4600 (K575A) Permanent Load Bank is designed for outdoor installation and offers a max capacity up to 1250 kW.

Standard 4600 Models
Catalog Number
Load Step
46000750HAD1A10X,R1A 750 kW
480V 3PH
46001000HAD1A10X,R1A 1000 kW 480V 3PH
46001250HAD1A10X,R1A 1250 kW 480V 3PH


  • Load Capacity: Max capacity of 500, 750, 1000, or 1250kW.
  • Voltage Options: 3PH 208V, 3PH 240V, or 3PH 480V.
  • Duty Cycle: Rated for continuous operation.
  • Load Step Resolution: Choice of 5kW or 50kW minimum.
  • Controller: Remote manual toggle switch controller w/ NEMA 4 wall-mount enclosure. Controls include: Power On/Off switch, Blower Start/ Stop push buttons, Master Load On/Off switch, and Individual Load Step switches. Visual indicators include: Power On, Blower On, and Blower/Air Failure. See Options and Spec Sheet below for other options.
  • Control Power: An Integral Control Power Transformer is provided for control circuit operation. Also see Options below.
  • Cooling Power: Blower motor is factory-wired to the main load bus. Also see Options below.
  • Cooling: Approximately 23,000 CFM cooling is provided by integral TEFC or TEAO motor which is direct coupled to the cooling fan blade. Horizontal airflow and discharge. The fan motor is fully protected with fuses, motor starter contractor, and overload relay.
  • Load Elements: ASCO Avtron brand load banks use helically wound chromium alloy Helidyne elements. Elements are fully supported across their entire length by segmented ceramic insulators on stainless steel rods.
  • Safety Features: Branch circuit fusing, a differential pressure switch provides cooling air loss protection, an over-temperature switch is provided to sense load bank exhaust temperature, blower motor circuit is protected by current limiting fuses, and thermal overload relays, operator warning and caution statements are located on appropriate access panels.
  • Load Connection: Copper bus bars with NEMA pattern are provided for customer load connections.
  • Enclosure: Heavy-gauge aluminized steel outdoor enclosure with high quality baked polyester powder coated finish. Designed for continuous outdoor weatherproof operation on a concrete pad or structural base. Forklift channels are provided in the base for lifting.
  • UL Listed.


4600-K575A Spec Sheet

4600-K575A Drawing

Avtron 2-Year Warranty


  • Starting Price: $498.00
  • Wired to the Load Bank.
  • Replaces the standard Remote Controller.

OPTIONAL ADMS Digital Power Meter (R2)

  • Starting Price: $1,368.00
  • Provides 3-line digital display of Voltage, Current, Frequency, and Power Measurements.
  • Allows real-time data acquisition and data logging from a Laptop PC or PDA.
  • See brochure for more details.

OPTIONAL Automatic Load Control (R4)

  • Starting Price: $1,264.00
  • Automatically keeps a minimum load on a generator set.
  • Loose current transformer provided to monitor building current.
  • Ability to toggle between automatic and manual modes.
  • See brochure for more details.


  • Control Power from External 120V 1PH 60Hz Source (instead of a Control Power Transformer)
  • Blower Power from External Power Source (instead of factory-wired to main load bus)
  • SIGMA 2 Digital Controls
  • Further Control Options (see Spec Sheet)
  • Arctic Rating for low temperature applications
  • Other Capacity/Volatge/Frequency Options available
4600 (K575A)
Max Capacity:
500, 750, 1000, or 1250 kW
208V, 240V, or 480V
Three Phase
Minimum Load Step Resolution:
5 or 50 kW
Control Power:
Integral Control Power Transformer for control circuit operation
Dimensions LxWxH (inches):
84 x 76 x 51
1800 lbs.
Limited Warranty:
2 Year

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