Moulded-case Circuit Breaker-FTM2
Overview:
Thermomagnetic trip units, for direct and alternating current network protection, using the physical properties of a bimetal and an electromagnet to detect the overloads and short-circuits; Electronic trip units, for alternating current network protection. Releases with microprocessor technology obtain protection functions that make the operations extremely reliable and accurate. The power required for operating them correctly is supplied straight from the current sensors of the releases. This ensures that they trip even in single-phase conditions and on a level with the minimum setting.
| Frame size | 400 | 800 | |||||||
| Model | FTM2L(Z)-400L | FTM2L(Z)-400H | FTM2L(Z)-800L | FTM2L(Z)-800H | |||||
| Rated current (A) | FTM2L | 250,315,350,400 | 160,180,200,225,250 | ||||||
| FTM2LZ | |||||||||
| Number of poles | 3-Poles,4-Poles | ||||||||
| Rated insulation voltage(V) | 690 | ||||||||
| Rated impulse withstand voltage Uimp(KV) | |||||||||
| 6 | |||||||||
| Rated frequency | 50/60Hz | ||||||||
| Ultimate short-circuit capacity Icu (KA) | 50 | 70 | 50 | 70 | |||||
| Service short-circuit capacity Ics (KA) | 50 | 50 | 50 | 50 | |||||
| Electrical life: | 3,500 | ||||||||
| Mechanical life: | 13,000 | ||||||||
| Arcing distance(mm) | Zero | ||||||||
| Ambient temperature (°C) | -5°C ~ +40°C | ||||||||
| Altitude (m) | ≦2000m | ||||||||
| When the ambient air temperature is +40℃, the relative humidity of the air shall not be higher than 50%; a higher relative humidity is allowed at a lower temperature; for the wettest month, the maximum relative humidity averaged shall be 90% while the lowest temperature aeraged in that month |
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| +25℃,and the condensation produced due to temperature change shall be taken into consideration, | |||||||||
| Atomospheric conditions | |||||||||
| Pollution degree | Ⅲ | ||||||||
| Connection | Front connection plate,rear connection plate,plug-in rear connection plate | ||||||||
| Dimensions | L | 257 | 275 | ||||||
| W | 3-Pole:140 4-Pole:184 | 3-Pole:140 4-Pole:184 | |||||||
| H1 | 95 | 97.5 | |||||||
| H | 153 | 153 | |||||||
