Automatic Controller GCU-20 for Generator Control Unit
SKU: 44508124482

Automatic Controller GCU-20 for Generator Control Unit

Sale price$93.28 Regular price$103.64
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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

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Description

Automatic Controller GCU-20 for Generator Control UnitGCU 20 Automatic Engine and Generator Control Unit has many useful functions like annunciator alarm output and selectable EM81 EM121 MPU signal for speed sensing. It's suitable for pump engine control. GCU 20 also provide IDLE control for electronic governors. Features: Microprocessor based design Universal LED graphic interface, displays generator status and failures Modular design, quick installation With annunciator alarm output Selectable MPU

GCU-20 Automatic Engine and Generator Control Unit has many useful functions like annunciator alarm output and selectable EM81 / EM121 MPU signal for speed sensing. It's suitable for pump engine control. GCU-20 also provide IDLE control for electronic governors.
Features:
Microprocessor based design
Universal LED graphic interface, displays generator status and failures
Modular design, quick installation
With annunciator alarm output
Selectable MPU signal for speed sensing
Suitable for pump engine control
With lamp test function for all front panel LEDs and annunciator lamps
Provide IDLE control for Elec. governors
Five adjustable time delay potentiometers
Six DIP switches for setting different engine parameters

Specification:


DC Supply:Voltage 9 to 36 Vdc
Alternator Input Range:
Voltage 5 to 300 Vac
Frequency 50/60 Hz
MPU Signal Input Range:+/-2V to 70V Peak
Rated MPU Frequency:100 to 10,000 Hz
Fuel Solenoid Signal Output:10 Amp @ 12/24 Vdc
Start Signal Output:10 Amp @ 12/24 Vdc
Annunciator Output:300 mA @ 12/24 Vdc
Power Consumption:Under 3 watts
Protection and Alarm Status Indicators:
Start Failure
High Water Temp.
Low Oil Pressure
No Speed Signal
Overspeed
Underspeed
Extra Prog. Input
Adjustable Timers
Engine Pre-Heat:2 to 30 seconds
Starter Cranking Time:1 to 15 seconds
Energize to STOP:1 to 15 seconds
Engine Idle (Governor):0 to 300 seconds
Engine Cool-Down:0 to 300 seconds
Environment
Operating Temperature :-20 to +60 °C
Storage Temperature:-35 to +85 °C
Relative Humidity:Less than 90%
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 44508124482

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Bowzr
Carnegie, US
★★★★★ 5
Mobil 1 M1-103A
Size: 64mm x 14
Fits Perfect on Mobil 1 M1-103A.. for 2010 Scion XB. Snaps on and doesn't fall off, easily removed after the oil filter is loose.. Very happy with the fit, function and quality!
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Reviewed in the United States on August 17, 2025
A
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Aspen Valdez
Alexandria, US
★★★★★ 5
Fits 2011 335xi n55 prefect
Fits my 2011 335xi n55 engine perfectly. Comes on and off easily and gets the filter loose quickly. Amazing quality
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Reviewed in the United States on March 15, 2026
C
Verified Purchase
Clint
Lexington, US
★★★★★ 5
Works perfect for BMW S63 engine.
I used this to change the oil on my BMW M8 with the S63 engine. It was a perfect fit. It extended far enough onto the filter housing to be quite secure with no risk of slipping off and stripping the housing. It was snug on the housing and did not bind up due to having a loose fit. The tool feels well-built and I suspect it will outlive me given my occasional personal use. It would still probably hold up well even for daily shop use as long as it was not abused (repeatedly dropped, slammed around, etc).
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Reviewed in the United States on September 8, 2025
C
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Chad altenbach
Port Orchard, US
★★★★★ 5
Made well and great fit
Fits perfectly and is made well
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Reviewed in the United States on May 8, 2026
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Dalia Toppin
Los Angeles, US
★★★★★ 5
Make sure you know the size
Yes worked like a charm
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Reviewed in the United States on April 5, 2026

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