| Main | |
| Range | UEM5 |
| Product Name | DC MCCB |
| Device Short Name | UEM5DC-630 |
| Product or Component Type | Circuit breaker |
| Device Application | DC distribution systems such as new energy, DC energy storage, power system, rail transit and electric tram. |
| Poles Description | 4P |
| Rated Current [In] | 250 A at 40 °C 315 A at 40 °C 350 A at 40 °C 400 A at 40 °C 500 A at 40 °C 630 A at 40 °C |
| Rated Operating Voltage [Ue] | 750V DC、1000V DC |
| Network type | DC |
| Suitability for isolation | Yes conforming to IEC 60947-2 |
| Utilization Category | Category A |
| Rated ultimate short-circuit breaking capacity [Icu] | 50 kA Icu at 750 V DC conforming to IEC 60947-2 40 kA Icu at 1000 V DC conforming to IEC 60947-2 |
| Rated service short-circuit breaking capacity[Ics] | 50 kA Ics at 750 V DC conforming to IEC 60947-2 20 kA Ics at 1000 V DC conforming to IEC 60947-2 |
| Arcing distance (mm) | ≤50mm |
| Trip unit technology | Thermal-magnetic Magnetic |
| Control type | Operated by handle Operated by motorized operating mechanism Operated by rotary operating mechanism |
| Circuit breaker mounting mode | Fixed |
| Complementary | |
| Rated insulation voltage [Ui] | 1500 V DC conforming to IEC 60947-2 |
| Rated impulse withstand voltage [Uimp] | 8 kV conforming to IEC 60947-2 |
| Mechanical durability | 5000 cycles |
| Electrical durability | 1000 cycles at 1000 V In |
| Mounting position | Horizontal and vertical flat on the back |
| Connection pitch | 44 mm |
Instantaneous protection pick-up adjustment range [Ii] | 10In |
| Electrical accessory types | Alarm contact Shunt release Auxiliary contact |
| Width | 184mm |
| Height | 257 mm |
| Depth | 97 mm |
| Net Weight | 10 kg |
| Environment | |
| Standards | EN/IEC 60947-2 |
| Product certifications | CCC CB |
| Pollution degree | 3 conforming to IEC 60664-1 |
| Ambient air temperature for operation | -25…70 °C |
| Ambient air temperature for storage | -40…70 °C |
| Relative humidity | 0…95 %（25℃） |
| Operating altitude | 0...2000 m without derating 2000 m...4000 m with derating |
| Offer Sustainability | |
| China RoHS regulation | China RoHS declaration Product out of China RoHS scope. Substance declaration for your information. |
The Product is Compatible With
Product Characteristics
| The electric arc will be rapidly extinguished due to advanced “magnetic blow-out” technology and special contact design. |
Thanks to advanced "air-blowing" technology and special material used for arc extinguishing chamber, the electric arc will be conducted into the chamber rapidly. |
The direct current is reliably interrupted and higher electrical endurance ensured due to special arc extinguish ing system and cross arrayed arc extinguishing grid. |
Effective use of the arc extinguishing chamber space enlarges the gap between the contacts, which can length en the arc much faster thus turning it off. |
This MCCB can be equipped with shunt release, auxiliary contact, alarm contact, motorized operating and manual operating mechanism. |
| The design of cassette-type accessories ensures fast and reliable accessory installation. |
| The positive and negative electrodes of the incoming line terminal are reversible, making the wiring convenient. |
| Different wiring method (down in and down out/up in and down out) makes the wiring flexible. |
Technical Parameters
Products of the same type
UEM5DC-250
MCCB
UEM5DC-630
MCCB