| Range | ComPact |
|---|---|
| Range of product | NR400…630 |
| Product or component type | Trip unit |
| Trip unit name | STR53UE F |
| Trip unit technology | Electronic |
| Range compatibility | ComPact NR400 ComPact NR630 |
| Device application | Distribution |
| Number of poles | 4P 3P |
| Protected poles description | 3t + N/2 3t 4t |
| Neutral position | Left |
| Protection type | for instantaneous short-circuit protection for short time short-circuit protection for overload protection (long time) |
| Trip unit rated current | 250 A at 40 °C 400 A at 40 °C 630 A at 40 °C 150 A at 40 °C |
| [Ue] rated operational voltage | <= 525 V AC 50/60 Hz |
| Network type | AC |
| Network frequency | 50/60 Hz |
| Long-time pick-up adjustment type Ir (thermal protection) | Adjustable 48 settings |
|---|---|
| Long-time protection delay adjustment type tr | Adjustable |
| [tr] long-time protection delay adjustment range | 12…16 s at 6 x Ir 138…200 s at 1.5 x Ir 277…400 s at 1.5 x Ir 3…4 s at 6 x Ir 34…50 s at 1.5 x Ir 6…8 s at 6 x Ir 69…100 s at 1.5 x Ir 8…15 s at 1.5 x Ir 0.2…0.74 s at 7.2 x Ir 0.4…0.5 s at 6 x Ir 1…1.4 s at 7.2 x Ir 1.5…2 s at 6 x Ir 2…2.8 s at 7.2 x Ir 4…5.5 s at 7.2 x Ir 8.2…11 s at 7.2 x Ir |
| Short-time protection pick-up adjustment type Isd | Adjustable 8 settings |
| [Isd] Short-time protection pick-up adjustment range | 1.5…10 x Ir |
| Short-time protection delay adjustment type tsd | Adjustable 4 settings |
| [tsd] Short-time protection delay adjustment range | 0.015…0.06 s 0.06…0.14 s 0.14…0.23 s 0.23…0.35 s |
| Instantaneous protection pick-up adjustment type Ii | Adjustable 8 settings |
| Display type | Display |
| Standards | IEC 60947-2 |
|---|---|
| Product certifications | LCIE ASEFA KEMA ASTA |
| Pollution degree | 3 conforming to IEC 60947 |
| IP degree of protection | IP40 conforming to IEC 60529 |
| Ambient air temperature for operation | -25…70 °C |
| Ambient air temperature for storage | -50…85 °C |
