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UKM5DC-250 2 Pole 250 amp DC MCCB

The UKM5DC-250 2 Pole 250amp dc mccb is designed for DC distribution and energy storage systems.

With a rated current range from 100A to 250A, rated for 1000VDC and 1500VDC working voltage (Ue) with 1500VDC insulation voltage (Ui), it delivers reliable protection for photovoltaic systems, energy storage applications, and industrial DC distribution boards.

Features 15kA ultimate short-circuit breaking capacity (Icu), it provides overload, short-circuit, and undervoltage protection, ensuring the safety and stability of your DC system.

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Key Features

  • Supports 1000V / 1500V DC systems
  • Breaking capacity — up to 15kA
  • Multiple rated currents: 100, 125, 150, 175, 200, 225, 250A
  • Wide operating temperature: -45°C to +70°C
  • Long service life: Mechanical life up to 7,000 operations
  • IP20 protection for enhanced safety
  • Supports various accessories: undervoltage trip, auxiliary contact, alarm contact
  • Fixed mounting design for easy installation

Products pass the certification of CE, CB,UL,VDE, TUV,KEMA,SAA,SEMKO,UKCA,and China CCC as well as quality management system such as ISO9oo1&ls014oo1, and we are continuously improving the management system.


Parameter 2P 3P
Frame size rated current Inm (A) 250 250
Rated current In (A) 100, 125, 150, 175, 200, 225, 250A 100, 125, 150, 175, 200, 225, 250A
Rated operating voltage Ue (V) DC 1000 1500
Rated insulation voltage Ui (V) DC 1500 1500
Rated impulse withstand voltage Uimp (kV) 8 8
Rated ultimate short-circuit breaking capacity Icu (kA) 15 15
Rated short-time withstand current Ics (kA) 15 15
Mechanical life (operations) 7,000 7,000
Electrical life (operations) 2,000 2,000
Degree of protection IP20 IP20
Operating temperature -45°C ~ +70°C -45°C ~ +70°C
Mounting type Fixed Fixed
Dimensions (L × W × H, mm) 180 × 80 × 105 180 × 105 × 105
Available accessories Undervoltage trip, auxiliary contact, alarm contact, shunt trip, motorized operating mechanism, rotary handle Undervoltage trip, auxiliary contact, alarm contact, shunt trip, motorized operating mechanism, rotary handle

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