Standard: IEC60947-2
Poles: 3P
Frame Current: 400A
Rated Current: 250,280,315,350,400A
Rated voltage: 800/1000/1140V
Rated insulation voltage: 1250V
Rated impulse withstand voltage: 12kV
Trip unit technology: Thermal-magnetic
Ambient Temperature: -25...+40 ºC
EKM6-400H represents advanced circuit protection technology for demanding industrial environments. This premium 400A moulded case circuit breaker features enhanced 1250V insulation voltage, making it suitable for high-voltage applications where standard MCCBs may be insufficient.
With five adjustable current settings ranging from 250A to 400A, the EKM6-400H offers precise protection tailoring to match specific load requirements. Its exceptional short-circuit performance includes a breaking capacity (Icu) of 50kA at 800V, 20kA at 1000V, and 15kA at 1140V, while providing an improved service breaking capacity (Ics) of 37.5kA at 800V.
Engineered to stringent IEC60947-2 standards, this 3-pole MCCB incorporates sophisticated thermal-magnetic trip technology that maintains consistent performance across operating temperatures from -25°C to +40°C. With a mechanical durability of 20,000 operations and electrical durability of 1,500 operations, the EKM6-400H delivers reliable protection for critical infrastructure, heavy machinery, and industrial power distribution systems.
| Model | EKM6-400H | |
| Ampere frame (Inm) | 400A | |
| Rated current (In) | 250,280,,315,350,400A | |
| Rated insulation voltage (Ui) | 1250V | |
| Rated impulse withstand voltage (Uimp) | 12kV | |
| Rated operational voltage (Ue) | 800V, 1000V, 1140V | |
| Rated ultimate short-circuit Breaking capacity (Icu) kA | 800V | 50 | 
| 
 | 1000V | 20 | 
| 
 | 1140V | 15 | 
| Rated service short-circuit breaking capacity (Ics) kA | 800V | 37.5 | 
| 
 | 1000V | 15 | 
| 
 | 1140V | 15 | 
| Isolation function | Available | |
| Utilization category | Cat.A | |
| Type of trip unit | Thermal-Magnetic | |
| Mechanical life (Times) | 20000 | |
| Electrical life (Times) | 1500 | |
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