PRODUCTS CATEGORIES
CQM3L Residual Current Circuit Breaker
1 Application
CQM3L series Earth-leakage molded case circuit breaker are mainly providing protection of people against indirect contact and additional protection against fire and other hazards which may develop as a result of an earth fault of a lasting nature .
CQM3L can be equipped with leakage alarm non-tripping module to avoid serious losses caused by power outage. Only 1, 3, 5 power lines, 2, 4, 6 load lines are allowed.
Features
·Overload protection, short circuit protection, and infrequent conversions
·Applications include distribution, motor protection, generator protection, leakage and grounding protection
·Electric ratings: AC 400V ,50Hz/60Hz
·Up to 630A current rating
·Mounting mode: Vertical and horizontal
·Isolation function
·High interruption, short arc (partial zero arc) and anti-vibration.
2 Selection
3 Technical data
Note：1: According to the IEC60947-1 term "life" denotes the probability of the number of operating cycles that an electrical appliance completes before repairing or replacing components.
2: Zero-flying hoods with heights of 6mm (CQM3L-100), 7.5mm (CQM3L-225), 9.3mm (CQM3L-400) and 9.5mm (CQM3L-630) are selected to realize zero-flying arc.
3: When this series of three-pole circuit breakers are connected to three-phase loads, the loads should not carry neutral lines, including the power supply of load control circuit taken from the load end of the circuit breaker, nor the neutral lines. Otherwise, the circuit breaker will malfunction.
4: When this series of 3poles and 4poles circuit breakers are connected to single-phase loads, the phase wiring is connected to pole A, the neutral wiring is connected to pole C, not to pole B.
4 Dimensions and installation sizes（unit :mm）
|
Model |
Poles |
Overall dimensions |
Mounting dimensions |
|||||
|
A |
B |
C |
D |
a |
b |
φd |
||
|
CQM3L-125 |
3 |
92 |
150 |
110 |
92 |
30 |
129 |
4.5 |
|
4 |
122 |
60 |
||||||
|
CQM3L-250 |
3 |
107 |
165 |
110 |
90 |
35 |
126 |
4.5 |
|
4 |
142 |
70 |
||||||
|
CQM3L-400 |
3 |
150 |
257 |
146.5 |
106.5 |
44 |
194 |
7 |
|
4 |
198 |
94 |
||||||
|
CQM3L-800 |
3 |
210 |
280 |
155 |
115.5 |
70 |
243 |
7 |
|
4 |
280 |
140 |
||||||
