The breaker has small volume，high breaking capacity，short arcing characteristics，is an ideal product to users.Vertical installation，also can be installed horizontally.
YKM6DCDC series molded case circuit breaker（hereinafter referred to as breakerl is applied to DC system which rated voltage up to and including the DC 1000V，rated current 10-800A，used for distribution power and protect circuit and power equipment from damage caused by overload，short circuit，etc.
Products can be upper wiring，lower wiring，and no polarity.
This product conforms to the IEC60947-2，GB14048.2
| Pole | 3P,4P |
| Rated Current(A) | 125,160,250,630,800 |
| Rated Voltage (V) | 400V AC |
| Rated Frequency | 50Hz |
| Tripping Curve | B, C |
| Rated Short-circuit Capacity | 50KA |
| Electro-mechanical Endurance | 3000 cycles |
| Connection Terminal | Pillar terminal with clamp |
| Installation | Bolt on |
| Panel mounting |
Main Performance
Frame current（A） | 250 |
Model | YKM6LY-250H |
Nurnber of poles | 3,4 |
Power supply system | 3pole(3P) | 3φ3W,1φ2W,1φ3W |
| 4pole(4P) | 3φ4W |
Roted Current（A） | 100,125,140,160,180,200,225,250 |
Roted voltoge(V) | AC400V |
Roted irsulation voltoge(V) | AC690V |
Leakoge indicating system | Pushbutton |
IKAIcu/ics Short-circuit bredking capacity IKAicu/lcs | AC400V | 85/50 |
number of Operating cycles | ON | 3000 |
| OFF | 7000 |
Fast type | Rated residual operating current | 30，100，500（Adjustablel） |
| Maxaction time | 0.1 |
Delay type | Under 21Δn Max.action time（s） | 100，300，,500（Adjustablel） |
| Under 21Δn inertia action time（s） | – |
| Under 21Δn Max.action time（s） | 0.45，.0,2.0， |
| Under 21Δn inertia action time（s） | 0.1,0.5,1.0（Adjustablel） |
DImensions(mm)a-b-c-ca | 3pole（3P） | 105-165-88-115 |
| 4pole(4P) | 140-165-88-115 |
Weight （kg） | 2pole(2P) | 1.7 |
| 3pole(3P) | 2.1 |
Electric operating devicelMD] |
|
Automatic tripping device | Thermal electromagnetic type |
