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Simplex dynaMITE Trailer Load Bank (300-400kW)

  • Image 1
  • Dynamite digital controller.
  • Dynamite with Cam-connectors and optional cable reel.
  • Dynamite with optional 12ft cable (instead of cam-connectors). Exhaust hatch open.
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2,600.00 LBS

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The Simplex dynaMITE Trailer Load Bank is designed for mobile applications and offers a max capacity up to 400kW. Available with or without a trailer.


  • Load Capacity: Max capacity up to 300 or 400kW at 240 and 480 VAC, 3PH, 60Hz. Capacity derates at other voltages.
  • Duty Cycle: Rated for continuous operation.
  • Digital Load Step Control: Nominal 5kW resolution - direct enter any load value, and controller will apply load within nominal 5kW resolution.
  • Digital Control: PLC based control with 8-inch color TFT touch-screen interface. MODBUS over TCP/IP network communication. Touchscreen easily removable from panel.
  • Instrumentation: Digital power transducer with built-in communication to digital controller. Data display on touch-screen. Data acquisition and recording.
  • Control Power Supply: Dual voltage control power transformer with supply power switchable to internal (load bus) or external source.
  • Cooling System: Forced Air. Vertical airflow and exhaust.
  • Load Elements: Simplex Powr-Web chromium alloy, open wire, continuously supported, power resistor.
  • Load Element Circuit Protection: Branch circuit fuses. One set of fuses each 50KW branch. Fuses are current limiting type, 200KAIC, 600V, enabling safe use on large generating or UPS system.
  • Malfunction Detection System: Protection against fan failure, high exhaust air temperature, high intake air temperature, over-voltage and fan reversal. Exhaust air temperature displays on screen.
  • Load Connections: Cam-type male power connectors. Two cam-connections per phase plus one ground (Dynamite 300). Three cam-connections per phase plus one ground (Dynamite 400).
  • Enclosure: Outdoor weather-resistant enclosure with lifting eyes. Manually-operated exhaust hatch.
  • Network Capable: Any number of dynaMITE and Electra Load Banks can be combined for large system capacities and networked for central control and data acquisition.
  • UL Listed.


  • Extra-heavy duty steel trailer with steel deck and all welded frame construction.
  • Meets all DOT requirements for highway use. DOT lighting and connector. Rear reflectors.
  • User specified hitch (2 5/16" ball hitch or 3" pintle ring hitch adjustable in 2" increments).
  • Electric driving brakes. Electric break-away battery and switch. Mechanical parking brake.
  • 2000 lb. lift jack.
  • 36" safety chains with hooks.
dynaMITE Comparison Chart
Model Max Capacity Full Load Amps Cooling System Max Air
Temp Rise
300 kW at 240/480V 3Ph
225 kW at 208/416V 3Ph
188 kW at 380V 3Ph
200 kW at 240V 1Ph
721A at 240V
361A at 480V
8,500 CFM
1.5HP Motor
290 F
400 KW at 240/480V 3Ph
300 KW at 208/416V 3Ph
251 KW at 380V 3Ph
267 KW at 240V 1Ph
961A at 240V
481A at 480V
10,500 CFM
3HP Motor
300 F


dynaMITE Brochure

dynaMITE Operator's Manual

dynaMITE Drawing


  • Network control cables (25-foot basic length)
  • Remote controller cable extensions
  • 12 foot power cable set (instead of cam-connections)
Varies - See Comparison Chart
Load Voltage Rating:
Dual: 240/480V AC 3Ph; Operational at any voltage to 480V AC max - 1Ph or 3Ph
50, 60, 400 Hz
Full Load Amps:
Varies - See Comparison Chart
Digital Load Step Control:
Nominal 5.0 kw resolution: direct enter any load value and controller will apply load within nominal 5kw resolution
Control/Fan Power:
User selectable, internal/external
Internal Control/Fan Power:
208-240/416-480V 3PH 60Hz; 220/380-416V 3Ph 50Hz
External Control/Fan Power:
208-230/460V 3Ph 60Hz 11/5/5a; 220/380-416V 3Ph 50Hz
Cooling System:
Varies - See Comparison Chart
Max Air Temp Rise:
Varies - See Comparison Chart
Ambient Air Temp:
120 F
Power Connection:
3-wire plus ground
Dimensions HxWxD (inches):
48 x 34 x 60
Weight: 300 / 400:
800 lbs. / 1000 lbs.
Trailer Construction:
Conforms to applicable Federal and DOT Standards. Hub and bearing assembly - cast iron with automative bearings. Dual fenders. Deck plate - 12 ga. hrs. Frame formed steel channel. 2000# lift jack.
Trailer Lights:
ICC 12V, electric lights with 7 pole connector (male and female component) (includes stop, turn, brake, and wire harness)
Trailer Brakes:
Electric and mechanical parking brake
Trailer Suspension:
Leaf springs
Trailer-Vehicle Connections:
2 5/16" ball hitch or 3" pintle ring hitch adjustable in 2" increments (user specified); 36" safety chains with hooks; Electric break-away battery and switch.
Trailer Weight Capacity:
3500 lbs. gross weight
Trailer Axles and Tires:
Single Axle, ST205-75-R14
Dimensions HxWxD with dynaMITE/Trailer:
67.5" x 76" x 150"
Weight with dynaMITE/Trailer:
2,600 lbs.
Limited Warranty:
12 Months
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