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ARM5
Thermal magnetic type high circuit breaking capacity MCCB 200ka icu=ics Thermal ajustable type mccb 400VAC/415VAC/550VAC/ 690VAC /800VAC 250A 400A 3/4 Poles
MCCB Highlights
ARM5double breaking type high icu=ics mccb Main functions and features
Pneumatic protection device
When the circuit breaks with large current, the gas in the contact unit box is rapidly pressurized, and the pneumatic protection device rapidly fluctuates the operating mechanism latch under strong air pressure, greatly reducing the damage of the breaking current to other electrical components and buses.
Magnetic blow design: the current flows through the fixed contact to generate an electromagnetic source, which forms an annular magnetic field arc with the iron core and quickly enters the arc extinguishing chamber under the action of the magnetic field, which is conducive to quickly break the current.
Main performance index of ARM5 series circuit breaker
| Model | ARM5-400 | ||||||||||||
| Rated current In (A) | 250A、315A、350A、400A | ||||||||||||
| Rated current of frame size Inm (A) | 400A | ||||||||||||
| Usage category | Category A | ||||||||||||
| Rated ultimate short-circuit breaking capacity level | L | M | H | ||||||||||
| Number of poles (P) | 3P | 4P | 3P | 4P | 3P | 4P | |||||||
| Rated working voltage Ue (V) | 400V/415V | ||||||||||||
| Rated ultimate short-circuit breaking capacity Icu (kA) | 85kA | 150kA | 200kA | ||||||||||
| Rated service short-circuit breaking capacity Ics (kA) | 85kA | 150kA | 200kA | ||||||||||
| Rated working voltage Ue (V) | 550V/690V | ||||||||||||
| Rated ultimate short-circuit breaking capacity Icu (kA) | 35kA | 50kA | 65kA | ||||||||||
| Rated service short-circuit breaking capacity Ics (kA) | 35kA | 50kA | 65kA | ||||||||||
| Rated insulation voltage Ui (V) | 1000V | ||||||||||||
| Rated impulse withstand voltage Uimp (V) | 12kV | ||||||||||||
| Mechanical life (time) | 7000 | ||||||||||||
| Electrical life (time) 400ln |
1000 | ||||||||||||
| Arcing distance (mm) | 0 | ||||||||||||
| Release type | Thermomagnetic | ||||||||||||
W*L*H (mm)
|
W | 141 | 185 | 140 | 185 | 140 | 185 | ||||||
| L | 256.5 | ||||||||||||
| H | 123.5 | ||||||||||||
Overall and installation dimensions of circuit breaker
Circuit breaker 400 frame size installation safety interval
■ ARM5-400 front panel wiring (3P/4P)
X-X, Y-Y are the center of three-pole circuit breaker
| Model | H | H1 | H0 |
B | C | D |
| ARM5-400 | 123.5 | 167.1 | ||||
| ARM5E-400 | 123.5 | 167.1 | ||||
| ARM5EHU-400 | 123.5 | 167.1 |
