| circuit breaker 3VA2 IEC frame 250 breaking capacity class M Icu=55kA @ 415V 3-pole, line protection ETU320, LI, In=250A overload protection Ir=100A...250A short-circuit protection Ii=1.5...10 x In nut keeper kit |
| Model |
| Product brand name | SENTRON |
| Product designation | Molded case circuit breaker |
| Product version | Line protection |
| Design of the overcurrent release | ETU320 |
| Protective function of the overcurrent release | LI |
| Number of poles | 3 |
| General technical data |
| Rated insulation voltage Ui | 800 V |
| Max. rated operational voltage Ue with AC 50/60Hz | 690 V |
| Power loss [W] / maximum | 48 W |
| Active power loss / for rated value of the current / at AC / in hot operating state / per pole | 16 W |
| Latching - endurance | 20 000 |
| Electrical endurance (switching cycles) / at AC-1 / at 380/415 V 50/60 Hz | 10 000 |
| Electrical endurance (switching cycles) / at AC-1 / at 690 V 50/60 Hz | 5 000 |
| Neutral conductors / upgradeable/retrofittable | No |
| Ground fault monitoring version | Without |
| Product function | |
| communication function | No |
| other measurement function | No |
| Net weight | 2.234 kg |
| Electricity |
| Max. rated operational voltage of the size of the circuit-breaker | 250 A |
| Rated continuous current Iu | 250 A |
| Operating current | |
| at 40 °C | 250 A |
| at 45 °C | 250 A |
| at 50 °C | 250 A |
| at 55 °C | 241 A |
| at 60 °C | 232 A |
| at 65 °C | 222 A |
| at 70 °C | 213 A |
| Switching capacity according to IEC 60947 |
| Switching capacity class of the circuit breaker | M |
| Maximum short-circuit current breaking capacity (Icu) | |
| at 240 V | 85 kA |
| at 415 V | 55 kA |
| at 440 V | 55 kA |
| at 500 V | 36 kA |
| at 690 V | 3 kA |
| Operational short-circuit current breaking capacity (Ics) | |
| at 240 V | 85 kA |
| at 415 V | 55 kA |
| at 440 V | 55 kA |
| at 500 V | 36 kA |
| at 690 V | 3 kA |
| Short-circuit current making capacity (Icm) | |
| at 240 V | 187 kA |
| at 415 V | 121 kA |
| at 440 V | 121 kA |
| at 500 V | 76 kA |
| at 690 V | 4.5 kA |
| Adjustable parameters |
| Adjustable response value current / lr min. | 100 A |
| Adjustable response value current / Ir max. | 250 A |
| Adjustable response value time / tr min. | 0.5 |
| Adjustable response value time / tr max. | 15 |
| Short-term delayed / tripping switchable / I2t=ON/OFF | No |
| Adjustable response value current / li min. | 375 A |
| Adjustable response value current / li max. | 2 500 A |
| Ground fault protection / tripping switchable / I2t=ON/OFF | No |
| Mechanical Design |
| Height [in] | 7.1 in |
| Height | 181 mm |
| Width [in] | 4.1 in |
| Width | 105 mm |
| Depth [in] | 3.4 in |
| Depth | 86 mm |
| Connections |
| Arrangement of electrical connectors / for main current circuit | Front terminal |
| Type of electrical connection / for main current circuit | Lug terminal |
| Type of connectable conductor cross-section, connection screw, width x thickness , min. | 13 x 1 mm |
| Type of connectable conductor cross-section, connection screw, width x thickness , max. | 25 x 8.5 |
| Auxiliary circuit |
| Number of CO contacts / for auxiliary contacts | 0 |
| Accessories |
| Product extension / optional / motor drive | Yes |
| Environmental conditions |
| Protection class IP / on the front | IP40 |
| Ambient temperature | |
| during operation / minimum | -25 °C |
| during operation / maximum | 70 °C |
| during storage / minimum | -40 °C |
| during storage / maximum | 80 °C |
