| Model |
UCB1250 |
| Ampere frame
size |
1250AF |
| Number of
poles (P) |
3, 4 |
| Degree of
protection (with terminal cover) |
IP20 |
| Utilization
category |
A |
| Protection |
overload, inst.,
short-circuit |
| Rating |
Rated current (A) |
630-1,250 |
| Rated insulation voltage [Ui] (V) |
AC750 |
| Rated operational voltage [Ue] (V) |
AC690 |
|
Rated impulse withstand voltage
[Uimp] (kV)
|
8 |
|
Rated
short-circuit
breaking capacity
IEC 60947-2
K 60947-2 |
Ultimate
[Icu]
(kA r.m.s.) |
Recognition code
for order
|
UCB1250S |
UCB1250L |
| AC600/660V, 50-60Hz |
40 |
60 |
| AC480/500V, 50-60Hz |
75 |
100 |
| AC440/460V, 50-60Hz |
75 |
100 |
| AC380/415V, 50-60Hz |
100 |
130 |
| AC220/240V, 50-60Hz |
100 |
150 |
| Service [Ics] |
% of [Icu] |
50 |
|
Trip
mechanism &
Protection characteristics
|
Electronic |
Long time delay LTD |
(0.5-1)1)×In (15 setting) |
| Short time delay STD |
(2-4-6-8-10)×Ir |
| Instantaneous INST |
(3-6-8-10-11)×In |
| Ground fault trip GFT |
(0.2-0.3-0.4)×In |
| Pre-trip alarm PTA |
0.9×Ir |
