Eaton 278888 Industry unit breaker 3pol 4A D curve.
Eaton 278888 Industry unit breaker 3pol 4A D curve.
| Manufacturer part number (MPN) | 278888 |
| EAN / GTIN | 4015082788889 |
| Sales unit | pcs |
| Package quantity | 40 pcs |
| Eaton catalogue number | 278888 |
| Depth | 80 mm |
| Height | 75.5 mm |
| Width | 54 mm |
| Weight | 0.338 kg |
| Compliances | UL CSA09 (with supplementary protector only); RoHS conform |
| Certifications | North America (UL recognized, CSA certified); CSA-C22.2 No. 235; IEC/EN 60898; UL 1077; CE marking; UL (Category Control Number QVNU2, QVNU8); UL (File No. E177451); CSA (Class No. 3215-30); CSA (File No. 204453); IEC/EN 60947-2; EN45545-2; IEC 61373 |
| Current limiting class | 3 |
| Features | Additional equipment possible |
| Special features | Ambient temperature hint: a 1 °C increase results in a 0.5% linear reduction of current carrying capacity |
| Used with | Miniature circuit breaker; FAZ |
| Amperage Rating | 4 A |
| Application | Branch circuits, not as BCPD Switchgear for industrial and advanced commercial applications xEffect - Switchgear for industrial and advanced commercial applications |
| Number of poles | Three-pole |
| Number of poles (protected) | 3 |
| Number of poles (total) | 3 |
| Release characteristic | D |
| Tripping characteristic | D |
| Type | FAZ Miniature circuit breaker |
| Ambient operating temperature - max | 75 °C |
| Ambient operating temperature - min | -25 °C |
| Equipment heat dissipation, current-dependent | 4.4 W |
| Rated operational current for specified heat dissipation (In) | 4 A |
| Frequency rating - max | 60 Hz |
| Frequency rating - min | 50 Hz |
| Overvoltage category | III |
| Pollution degree | 2 |
| Rated impulse withstand voltage (Uimp) | 4 kV |
| Rated insulation voltage (Ui) | 440 V |
| Rated operational voltage (Ue) - max | 400 V |
| Rated short-circuit breaking capacity (IEC/EN 60898-1) - Icn at 230 V | 10 kA |
| Rated short-circuit breaking capacity (IEC/EN 60898-1)- Icn at 400 V | 10 kA |
| Rated short-circuit breaking capacity (IEC 60947-2)- Icu at 230 V | 15 kA |
| Rated short-circuit breaking capacity (IEC 60947-2)- Icu at 400 V | 15 kA |
| Rated switching capacity (IEC/EN 60947-2) | 15 kA |
| Voltage rating | 240 V AC / 415 V AC |
| Voltage rating (UL CSA 13) | 480 Y/277 V AC |
| Voltage type | AC |
| Built-in depth | 70.5 mm |
| Connectable conductor cross section (multi-wired) - max | 25 mm² |
| Connectable conductor cross section (multi-wired) - min | 1 mm² |
| Connectable conductor cross section (solid-core) - max | 25 mm² |
| Connectable conductor cross section (solid-core) - min | 1 mm² |
| Degree of protection | IP20 (IEC); UL/CSA Type: -; IP20 |
| Width in number of modular spacings | 3 |
| Document Name | Description Action |
| Power loss | 4.5 W |
| Number of protected poles | 3 |
| Rated current | 4 A |
| Rated voltage | 400 V |
| Rated insulation voltage Ui | 440 V |
| Rated impulse withstand voltage Uimp | 4 kV |
| Frequency | 50–60 Hz |
| Concurrently switching neutral conductor | No |
| Additional equipment possible | Yes |
| Ambient temperature during operating | -25–75 °C |
| Connectable conductor cross section multi-wired | 1–25 mm² |
| Connectable conductor cross section solid-core | 1–25 mm² |
| Explosion-proof | No |
| Flush-mounted installation | No |
| Country of origin | Romania |
| MOQ | 1 |