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China Suppliers Factory CBRM5EKd Electronic Adjustable Circuit Breaker MCCB with LCD Display - High Breaking Capacity
Product Model & Description
- Type A: The N pole is not equipped with an overcurrent release and remains permanently connected; it does not open or close together with the other three poles.
- Type B: The N pole is not equipped with an overcurrent release but opens and closes together with the other three poles (N pole closes first and opens last).
Operating Environment
◆ The upper limit of ambient air temperature shall not exceed +40°C, the lower limit shall not be lower than -5°C, and the average temperature within 24 hours shall not exceed +35°C. Note: When the ambient air temperature exceeds +40°C or falls below -5°C, the use of the circuit breaker should be subject to agreement with the manufacturer.
◆ Installation altitude shall not exceed 2000 m.
◆ The relative humidity of the atmosphere shall not exceed 50% at the maximum ambient temperature of +40°C. Higher relative humidity is allowed at lower temperatures (e.g., 90% at 20°C), with consideration given to condensation that may occur due to temperature changes on the product surface.
◆ Installation category: Category Ⅲ for the main circuit, Category Ⅱ for the control and auxiliary circuits.
◆ Installation orientation: Generally installed vertically (upright), but horizontal (flat-mounted) installation is also permissible.
◆ Pollution degree: Degree 3.
◆ External magnetic field: The external magnetic field in the installation location shall not exceed 5 times the geomagnetic field in any direction.
Trip Unit Types & Accessory Codes
Main Technical Parameters
Model |
CBRM5Kd-125i |
CBRM5Kd-160 |
CBRM5Kd-250 |
CBRM5Kd-400 |
CBRM5Kd-800 |
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Frame Size Current Inm(A) |
125 |
160 |
250 |
400、630 |
800 |
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Rated Current In(A) |
16、20、25、30、32、40、50、63、70、75、80、90、100、125 |
16、20、25、30、32、40、50、63、70、75、80、90、100、125、140、150、160 |
100、125、140、150、160、175、180、200、225、250 |
225、250、280、300、315、350、400、500、550、630 |
630、700、800 |
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Number of Poles |
3 |
4 |
3 |
4 |
3 |
4 |
3 |
4 |
3 |
4 |
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Rated Insulation Voltage Ui(V) |
1000 |
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Rated Operation Voltage Ue(V) |
AC380、AC400、AC415 |
AC380、AC400、AC415、AC660、AC690 |
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Rated Impulse Withstand Voltage Uimp(kV) |
8 |
12 |
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Arc Distance(mm) |
50 |
100 |
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Breaking Capacity Level |
L |
M |
H |
L |
M |
H |
L |
M |
H |
L |
M |
H |
L |
M |
H |
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Ultimate Short-Circuit Breaking Capacity Icu(kA) AC380V/AC400V/AC415V |
10 |
18 |
25 |
25 |
36 |
50 |
36 |
50 |
70 |
50 |
70 |
100 |
50 |
70 |
100 |
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Service Short-Circuit Breaking Capacity Ics(kA) AC380V/AC400V/AC415V |
10 |
18 |
25 |
25 |
36 |
50 |
36 |
50 |
70 |
50 |
70 |
100 |
50 |
70 |
100 |
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Ultimate Short-Circuit Breaking Capacity Icu(kA) AC660V/AC690V |
- |
- |
- |
8 |
10 |
10 |
10 |
10 |
10 |
10 |
15 |
20 |
15 |
20 |
20 |
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Service Short-Circuit Breaking Capacity Ics(kA) AC660V/AC690V |
- |
- |
- |
4 |
5 |
5 |
5 |
5 |
5 |
10 |
15 |
15 |
13 |
15 |
15 |
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Operating Performance (operations) |
Energized |
1500 |
1500 |
1000 |
1000 |
500 |
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De-energized |
8500 |
8500 |
7000 |
4000 |
2500 |
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Total |
10000 |
10000 |
8000 |
5000 |
3000 |
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Protection Characteristics
Rated Current (A) |
Thermal Trip Unit (Ambient Temp +40) |
Magnetic Trip Unit Operating Current (A) |
|
1.05In(Cold State) Non-Tripping Time (h) |
1.3In (Hot State) Tripping Time (h) |
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10≤In≤63 |
No Tripping Within 1 hour |
≤1 |
10In±20% |
63<In≤800 |
No Tripping Within 2 hours |
≤2 |
|
Rated Current (A) |
Thermal Trip Unit (Ambient Temp +40) |
Magnetic Trip Unit Operating Current (A) |
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1.0In(Cold State)Non-Tripping Time (h) |
1.2In(Hot State) Tripping Time (h) |
1.5In(Hot State) Tripping Time (h) |
7.2In(Cold State)Tripping Time (h) |
Trip Level |
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10≤In≤25 |
No Tripping Within 2 hours |
≤2 |
≤2min |
0.5s<Tp≤5s |
5 |
12In±20% |
25<In≤250 |
≤4min |
4s<Tp≤10s |
10 |
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250<In≤800 |
≤8min |
6s<Tp≤20s |
20 |
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Circuit Breaker Classification
- By Number of Poles: Three-Pole, Four-Pole
- By Application: For Distribution, For Motor Protection
- By Operating Method: Direct Handle Operation, Electric Operation (indicated by "p"), Rotary Handle Operation for Switchgear (indicated by "Z")
Frequently Asked Questions (FAQ)
A1: For Type A, the N pole is not equipped with an overcurrent release, remains permanently connected, and does not open or close together with the other three poles. For Type B, the N pole is also not equipped with an overcurrent release, but it opens and closes together with the other three poles (closing first and opening last).
A2: The installation altitude for these circuit breakers must not exceed 2000 meters.
A3: The normal ambient air temperature should be within the range of -5°C to +40°C, and the average temperature over a 24-hour period must not exceed +35°C. For temperatures outside this range, usage must be agreed upon with the manufacturer.
A4: Yes. Although the circuit breaker is generally designed to be installed vertically (upright), horizontal (flat-mounted) installation is also permissible.
A5: The letter "p" indicates Electric Operation, and the letter "Z" indicates Rotary Handle Operation for switchgear.
A6: The rated insulation voltage (Ui) for these circuit breaker models is 1000V.