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HYUNDAI
UCB400 & UCB630 Molded
Case Circuit Breaker (MCCB)
| Model |
UCB400 |
UCB630 |
| Ampere frame
size |
400AF |
630AF |
| Number of
poles (P) |
2, 3, 4 |
| Degree of
protection (with terminal cover) |
IP20 |
| Utilization
category |
A |
| Protection |
overload, inst.,
short-circuit |
| Rating |
Rated current (A) |
250,
300, 320, 350, 400 |
500, 630 |
| Rated insulation voltage [Ui] (V) |
AC690 |
| Rated operational voltage [Ue] (V) |
AC660 |
|
DC250 |
|
Rated impulse withstand voltage
[Uimp] (kV)
|
6 |
|
Rated
short-circuit
breaking
capacity
IEC 60947-2
K 60947-2 |
Ultimate
[Icu]
(kA r.m.s.) |
Recognition code
for order
|
UCB400R |
UCB400S |
UCB400H |
UCB400L |
UCB630R |
UCB630S |
UCB630H |
UCB630L |
| AC600/660V, 50-60Hz |
18 |
22 |
25 |
30 |
22 |
25 |
35 |
35 |
| AC480/500V, 50-60Hz |
18 |
25 |
35 |
65 |
25 |
45 |
50 |
65 |
| AC440/460V, 50-60Hz |
25 |
35 |
50 |
85 |
35 |
50 |
65 |
85 |
| AC380/415V, 50-60Hz |
30 |
42 |
65 |
100 |
45 |
65 |
85 |
100 |
| AC220/240V, 50-60Hz |
35 |
50 |
85 |
125 |
50 |
100 |
100 |
125 |
| DC250V |
14 |
25 |
40 |
40 |
20 |
40 |
40 |
40 |
| DC125V |
20 |
30 |
50 |
60 |
30 |
50 |
50 |
60 |
|
Service
[Ics]
|
% of [Icu] |
50 |
|
Trip
mechanism
&
Protection
characteristics
|
Thermal
magnetic
|
Fixed thermal,
Fixed
instantaneous
|
INST |
10×In |
|
Adjustable
thermal, Fixed
instantaneous
|
LTD |
(0.8-0.9-1)×In |
| INST |
10×In |
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