Low Voltage Distribution And Automation D165t Pole Mounted Circuit Breaker
The protection and management of MV / LV transformers in rural areas requires the use of specific Circuit Breakers adapted to significant load imbalances and thus guarantees the total use of the installed power even in unbalanced conditions. These devices (4 poles - 3 protected) use air-break technology with chambers with metal partitions to cut the arc.
Technical Datas:
Type: Outdoor - Up to 100 kVA
Number of poles: 4 (3 protected)
Rated voltage: 440 V
Rated current: 165 A
Frequency: 50 Hz
Number of outputs: 1
Maximum cable connecting capacity: Alu/Cu 25 to 70 mm²
Enclosure protection index: IP 337
Dielectric withstand:
Rated power-frequency withstand voltage (1min) :
Between poles and frame (to ground): 10 kV
Between phases: 4 kV
Across isolating distance: 4 kV
Rated lightning impulse withstand voltage (1.2/50) :
Between poles and frame (to ground): 20 kV
Rated short-circuit breaking capacity:
Rated current at 440 V cosφ=0.5: 4 kA Rated short-circuit making current:
Current peak: 6.8 kA
Rated short-circuit withstand (duration 1s):
Rated current of 4 poles: 4 kA
Rated current non protected pole: 300 A
Temperature range:
Operating: -25°C to +50°C
Storage: -25°C to +70°C
Overload release block:
Technology: Thermal image technology type
Range available (according to Transformer's power): 1T 3T 6T 3T/6T
(according to Transformer's power): (25 kVA) (50 kVA) (100 kVA) (50/100 kVA)
Load indicator (optional):
Display: Outside enclosure
Automatic tripping of the circuit breaker after 24 hours overloaded: Possibility to switch off
