BK-800VA series 800W single phase control transformers

Illustrated submodels
Price: US $65.56 / piece
Model number: BK-800VA-MV-220V
Product name: Control transformer
Input voltage:
220VAC/380VAC600VAC
Output voltage:
220V6.3V120V 240V
Product description
▇ Model number and description
Model numberRated capacityExternal dimensionsMounting holes distanceOnline store:
BK-25VA25VA78*69*88mm55*50mmUS $9.52/ pieceOrder (4)
BK-50VA50VA78*69*88mm55*50mmUS $9.97 - 11.48/ pieceOrder (14)
BK-100VA100VA96*86*102mm85*60mmUS $15.08/ pieceOrder (7)
BK-150VA150VA103*97*110mm83*71mmUS $16.81/ pieceOrder (7)
BK-200VA200VA106*98*109mm76*74mmUS $19.28/ pieceOrder (4)
BK-250VA250VA115*106*124mm/115*106*119mm90*75mm/90*77.5mmUS $23.78/ pieceOrder (8)
BK-300VA300VA115*110*122mm90*82mmUS $30.89/ pieceOrder (6)
BK-400VA400VA130*107*120mm90*87mmUS $41.32/ pieceOrder (4)
BK-500VA500VA*130*130*130mm*100*102mmUS $46.23/ pieceOrder (5)
BK-600VA600VA133*133*135mm100*102mmUS $50.99/ pieceOrder (1)
BK-700VA700VA150*140*150mm117*110mmUS $60.00/ pieceOrder (4)
BK-800VA800VA152*140*152mm120*108mmVisiting...
BK-1000VA1000VA153*143*153mm120.5*114.5mmUS $72.63 - 74.87/ pieceOrder (4)
BK-1200VA1200VA150*150*152mm120*125mmUS $93.78/ pieceOrder (1)
BK-1500VA1500VA192*160*210mm140*140mmUS $108.53/ pieceOrder (2)
BK-2000VA2000VA180*180*170mm140*150mmUS $140.50/ pieceOrder (2)
BK-3000VA3000VA200*190*200mmUS $172.46/ pieceOrder (1)
BK-4000VA4000VA220*235*240mm131*150mmUS $217.22/ pieceOrder (3)
BK-5000VA5000VAUS $241.81/ pieceOrder (3)
▇ BK-800VA control transformer model number legend
BK-800VA


Parent Model Number
▇ General
Model number BK series
Rated capacity 25, 50, 100, 150, 200, 250, 300, 400, 500, 600, 700, 800, 1000, 1500, 2000, 2500, 3000, 4000, 5000VA
Input voltage AC 220V, 230V, 380V, can be customized
Output voltage AC 220V 110V 36V 24V 12V 6.3V 80V, can be customized
Freqency 50/60Hz
Phase Single-phase
Coil quantity Double winding (Isolation transformer)
Coil structure Core type (EI laminated core)
Core material Silicon steel sheet
Winding material Copper wire
Insulation resistance ≥20MΩ
Efficiency ≥80%
Cooling method Natural air cooling, dry type
Operating temperature -5 to 40℃, 24h average temperature ≤35℃
Usage Machine tool control, industrial control. Also called machine tool control isolating transformer.
FAQ Q: Are different output taps isolated from each other?
A: No. Secondary side is single winding multi-tap. No isolation between output taps.

Q: Is this an autotransformer?
A: No. It is double winding isolation transformer, primary and secondary are electrically separated.
▇ BK-800VA control transformer submodels
No Model Number Input Voltage Output Voltage MOQ Unit Price
1 BK-800VA-MV-220V 220VAC/380VAC 220V 1 US $65.56
2 BK-800VA-MV-6.3 220VAC/380VAC 6.3V 1 US $70.96
3 BK-800VA-600V-120-240 600VAC 120V 240V 1 US $63.10