Home > Electrical
Equipment > Low-voltage equipment
Automatic three-phase
circuit breakers AP50B-3MT
|
AP 50B is a family of automatic circuit breakers that are
designed for overload and short-circuit protection of electric circuits with voltages
of up to 220 V DC, up to 500 V AC 50-60 Hz. These circuit breakers also designed
for routine on and off switching of these circuits 6 to 30 times per day, including
electric motor starts, protection and shutdowns. AP 50B - XXXX X XXX.X
AP
- the family;
50B
XXXX - maximum-current release devices:
MT - combined maximum-current release device (electromagnetic
and thermal);
M - electromagnetic maximum-current release
device;
T - thermal maximum-current release device;
X - auxiliary release device:
N - minimum-voltage
release device (rated voltages: 110, 127, 220, 380, 400 and 415 V AC 50 Hz);
D - independent release device (rated voltages: 110, 127, 220,
230, 240, 380, 400, 415 and 440 V AC
50-60 Hz);
O
- neutral conductor maximum-current release device;
XXX - climatic
construction (U, HL, T) and placement category (2, 3, 5):
UZ,
TZ, HL5 - without sheathing;
U2, T2, HL5 - in special metal
sheathing with protection rate IP54;
X - symbolic notation of
the circuit breaker, depending on its main circuit rated current:
1
- (1.6; 2.5; 4 A);
2 - (6.3; 10; 16 A);
3
- (25; 40; 50; 63 A).
| |
AP50B3M | AP50B3MT
| AP50B2M3TN |
AP50B2MN | AP502B3TD
| AP50B2M3TO |
| Rated voltage, V AC 50-60
Hz |
up
to 500 | | Release
device's rated current scale In, A |
1.6; 2.5; 4; 6.3; 10; 16; 25; 40; 50; 63 |
16; 25; 40; 50; 63 |
| Momentary response current settings, I/In |
3.5 and 10 | |
Thermal release device's specifications:
do not trigger under a current
of 1.05 In
trigger under a current of 1.35 In |
-
- |
<1 h
<0.5 h |
<1 h
<0.5 h |
-
- |
<1 h
<0.5 h |
<1 h
<0.5 h |
| Weight, kg, in extra casing |
up to 1.3 | |
up to 3.5 | |
