CBRM5EKd Electronic Adjustable Circuit Breaker With LCD Display (MCCB)
Product Model&Description

Four-Pole Product Codes
Type A: N pole without overcurrent release element, and the N pole remains closed at all times and does not open or close with the other three poles.
Type B: N pole without overcurrent release element, and the N pole opens and closes with the other three poles (the N pole closes first and opens later).
Operating Environment
Normal Operating Conditions
◆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.
Normal Installation Conditions
◆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-630i |
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) |
10、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 |
36 |
25 |
36 |
50 |
36 |
50 |
70 |
50 |
70 |
100 |
50 |
70 |
100 |
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Service Short-Circuit Breaking Capacity Ics(kA)AC380VAC400V/AC415V |
10 |
18 |
36 |
25 |
36 |
50 |
36 |
50 |
70 |
50 |
70 |
100 |
50 |
70 |
100 |
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Ultimate Short-Circuit Breaking Capacity Icu(kA)AC660W/AC690V |
- |
- |
- |
8 |
10 |
10 |
10 |
10 |
10 |
10 |
15 |
20 |
15 |
20 |
25 |
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Service Short-Circuit Breaking Capacity Ics(kA)AC660V/AC690V |
- |
- |
- |
8 |
10 |
10 |
10 |
10 |
10 |
10 |
15 |
20 |
13 |
15 |
20 |
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Number of operating cycles |
With current |
4000 |
4000 |
4000 |
1000 |
500 |
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Without current |
10000 |
10000 |
10000 |
4000 |
2500 |
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Total |
14000 |
14000 |
14000 |
5000 |
3000 |
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Protection Characteristics
For Distribution Applications
|
Rated Current (A) |
Thermal Trip Unit (Ambient Temp +40) |
Magnetic Trip Unit Operating Current (A) |
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1.05ln(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 |
|
For Motor Protection
|
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) |
1.2ln(Hot State) Tripping Time (h) |
1.5ln(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% 160 Frame,16-32A:400A ±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" )
Circuit Breaker Accessories(Dual-Cover Type)
|
Rated Control Power Supply Voltage Us (V) |
AC230V、AC400V;DC24V |
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Rated Operating Voltage (V) |
(0.7-1.1)Us |
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Shunt Release |
|
Note: K The micros witch inside the shunt release,connected in series with the coil, is normally closed After the breaker trips,the contact opens automatically;it closes when the breaker is switched on, The dashed box indicates the internal accessory wiring diagram of the circuit breaker. |
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Rated Control Power Supply Voltage Us (V) |
AC230V、AC400V |
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Operating Voltage (V) |
The circuit breaker reliably trips when the voltage is 35%-70% of the rated operational voltage.The breaker closes reliably when the voltage is 85%- 110% of the rated operational voltage. |
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Under voltage Release |
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Note: P1, P2, UC2, and UC1 are terminal designations. |
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Conventional Thermal Current Ith(A) |
3A |
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Rated Operating Current Ie(A) |
0.26A when In≤250A; 0.3A when In≥400A |
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Auxiliary Contact |
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Conventional Thermal Current Ith(A) |
3A |
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Rated Operating Current Ie(A) |
0.26A when In≤250A;0.3A when In ≥ 400A |
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Alarm Contact |
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Conventional Thermal Current Ith(A) |
3A |
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Rated Operating Current Ie(A) |
0.26A when In≤250A;0.3A when In ≥ 400A |
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Auxiliary Contact, Alarm Contact |
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Wiring Diagram |
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Input Voltage (V) |
AC230V、AC400V;DC110V、DC230V、DC24V |
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Motor Operator Mechanism |
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Description: P1-P2: External power supply inputSB1,SB2: Operating buttons (provided by the user)Note: The dashed box indicates the internal wiring diagram of the circuit breaker accessories. |
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Overall Dimensions and Mounting Dimensions of the Motor Operator Mechanism

|
Model |
Overall Dimensions(mm) |
Mounting Dimensions (mm) |
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|
L1 |
B |
H |
H1 |
a |
b |
|
|
125i |
102 |
73 |
92 |
14 |
25 |
117 |
|
160 |
116 |
90 |
97 |
16 |
30 |
129 |
|
250 |
116 |
90 |
95 |
16 |
35 |
126 |
|
400、630i |
176 |
130 |
151 |
34.5 |
44 |
194 |
|
800 |
176 |
130 |
146 |
31 |
70 |
243 |
Overall Dimensions and Mounting Dimensions of Rear-Connected Circuit Breaker (125i)

Overall Dimensions and Mounting Dimensions of Rear-Connected Circuit Breaker ( 160-800 )

|
Model |
Overall Dimensions(mm) |
Mounting Dimensions (mm) |
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|
L2 |
H1 |
H2 |
A1 |
A2 |
b2 |
D |
d |
|
|
160 |
132 |
42 |
75 |
60 |
90 |
132 |
Φ24 |
Φ8.5 |
|
250 |
144 |
39 |
73 |
70 |
105 |
144 |
Φ24 |
Φ8.5 |
|
400、630i |
226 |
34 |
69 |
87 |
130.5 |
226 |
Φ32 |
Φ12.5 |
|
800 |
243 |
62 |
84 |
140 |
210 |
234 |
Φ48 |
Φ14 |
Overall Dimensions and Mounting Dimensions of Plug-in Rear-Connected Circuit Breaker

|
Model |
A |
B1 |
B2 |
C1 |
C2 |
E |
F |
G |
K |
H |
H1 |
H2 |
N |
S |
Q |
B3 |
B4 |
AM |
BM |
4-d |
|
125i |
145 |
75 |
100 |
50 |
75 |
60 |
121 |
92 |
27 |
27 |
16 |
15 |
142 |
87 |
26 |
80 |
110 |
M5 |
M5 |
Φ6.5 |
|
160 |
169 |
91 |
125 |
60 |
90 |
56 |
132 |
92 |
38 |
50 |
33 |
28 |
179 |
83 |
48 |
101 |
135 |
M6 |
M8 |
Φ6.5 |
|
250 |
186 |
107 |
145 |
70 |
105 |
54 |
145 |
94 |
46 |
50 |
33 |
37 |
196 |
84 |
56 |
117 |
155 |
M6 |
M8 |
Φ6.5 |
|
400、630i |
280 |
144 |
188 |
88 |
132 |
145 |
224 |
180 |
50 |
60 |
38 |
46 |
290 |
170 |
60 |
154 |
198 |
M8 |
M12 |
Φ8.5 |
|
800 |
300 |
210 |
280 |
90 |
160 |
142 |
243 |
174 |
63 |
87 |
61 |
21 |
315 |
170 |
73 |
220 |
290 |
M10 |
M14 |
Φ10 |
Overall Dimensions and Mounting Dimensions of Plug-in Front-Connected Circuit Breaker

|
Model |
Overall Dimensions(mm) |
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|
A |
B |
E |
F |
G(3P) |
H |
L(3P) |
L1 |
L2 |
M |
N |
K |
d |
A1(3P) |
B1 |
D |
|
|
125i |
91 |
48 |
121 |
55 |
50 |
150 |
78 |
25 |
25 |
193 |
176 |
23 |
Φ6 |
25 |
112 |
Φ3.5 |

|
Model |
Overall Dimensions(mm) |
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|
A |
B |
C |
D |
E |
F |
H |
H1 |
K1 |
K2 |
d1 |
d2 |
A1 |
A2 |
A3 |
A4 |
A5 |
A6 |
A7 |
|
|
160 |
172 |
96 |
216 |
50 |
61 |
66 |
15 |
35 |
38 |
38 |
Φ6.5 |
M8 |
18 |
3 |
19 |
10.5 |
30 |
10.5 |
196 |
|
250 |
183 |
110 |
261 |
51.5 |
64 |
70 |
42.5 |
35 |
44 |
44 |
Φ6.5 |
M8 |
49 |
3 |
22 |
13.5 |
35 |
22 |
227 |
|
400、630i |
282 |
144 |
362 |
362 |
146 |
88 |
20 |
59 |
50 |
50 |
Φ8.5 |
Φ11 |
26 |
6 |
30 |
14.5 |
44 |
25 |
331 |
|
800 |
305 |
210 |
409 |
409 |
144 |
90 |
16 |
61 |
62 |
62 |
Φ11 |
Φ13 |
24 |
8 |
35 |
35 |
70 |
36 |
377 |
Overall Dimensions and Mounting Dimensions of Rotary Handle Operating Mechanism

|
Model |
125i |
160 |
250 |
400、630i |
800 |
|
Mounting Dimensions H(mm) |
54 |
60 |
60 |
97 |
90 |
|
A |
25 |
30 |
35 |
44 |
70 |
|
B |
95 |
120 |
142 |
195 |
243 |
Note: The standard rod length provided at delivery is 150mm.
Dimensions of the Circuit Breaker with Protective Cover

|
Model |
125i |
160 |
250L、M |
250H |
400 |
630i |
800 |
|
Number of Poles |
3P |
3P |
3P |
3P |
3P |
3P |
3P |
|
L4 |
170 |
195 |
208 |
208 |
292 |
505 |
436 |
|
W3 |
78 |
92.5 |
107 |
107 |
140 |
186.5 |
234 |
|
H5 |
67.5 |
67.5 |
74 |
100 |
101.5 |
101.5 |
111 |
Overall Dimensions &Mounting Dimensions(Dual-Cover Type)

|
Model |
Overall Dimensions(mm) |
Mounting Dimensions (mm) |
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|
L |
L1 |
L2 |
L3 |
W1 |
W2 |
H |
H1 |
H2 |
H3 |
H4 |
W |
B |
d |
A |
|
|
CBRM5Kd-125iL、M、H |
135 |
86 |
49 |
24.5 |
78 |
103 |
63.5 |
21 |
69.5 |
95 |
21 |
25 |
117 |
Φ4.2 |
25 |
|
CBRM5Kd-160L、M、H |
150 |
95 |
51 |
29 |
92.5 |
122.5 |
65.5 |
25.5 |
75 |
100 |
23 |
30 |
130 |
Φ4.5 |
30 |
|
CBRM5Kd-250L、M |
165 |
102 |
56.5 |
31 |
107 |
142 |
72 |
21.5 |
79 |
105 |
21.5 |
35 |
126 |
Φ5 |
35 |
|
CBRM5Kd-250H |
165 |
102 |
56.5 |
31 |
107 |
142 |
97 |
21.5 |
105 |
132 |
21.5 |
35 |
126 |
Φ5 |
35 |
|
CBRM5Kd-400L、M、H |
257 |
150 |
87.5 |
58 |
140 |
184 |
99 |
35 |
108 |
163 |
37 |
44 |
194 |
Φ7 |
44 |
|
CBRM5Kd-630iL、M、H |
257 |
150 |
87.5 |
58 |
140 |
184 |
99 |
36.5 |
108 |
163 |
38.5 |
44 |
194 |
Φ7 |
44 |
|
CBRM5Kd-800L、M、H |
280 |
180 |
86.9 |
64 |
210 |
280 |
109 |
38 |
117 |
170 |
41.5 |
70 |
243 |
Φ7.5 |
70 |
Operation &Maintenance
◆Before installation, carefully review the relevant dimensional drawings and mounting instructions, and verify that the nameplate technical specifications meet the requirements.
◆For circuit breakers with a motor operator mechanism, do not remove the motor operator during installation, as it may affect tripping characteristics, After tripping, the motor operator automatically resets the breaker. Closing requires a closing command from the upper- level controller, tripping similarly requires a tripping command. For manual closing opening, set the motor operator switch to "Manual" . If the breaker is in the free trip position, it must be manually reset before performing closing or opening operations.
◆Internal and external accessories of the circuit breaker are preset at the factory. Users should not attempt to adjust or disassemble them.Installation can be done directly.
◆The phase line must be properly connected. Otherwise, internal electronic circuits may not function properly.affecting the protection capability.
◆For breakers equipped with an under voltage release, the release must be supplied with its rated operating voltage before closing is possible.
Transportation& Storage
Transportation
Protect against harmful liquids (such as water, rain, snow, chemical solvents, corrosive liquids, etc.) and avoid mixing with incompatible items; prevent strong impact and compression. Stack according to the packaging orientation instructions; the number of layers must comply with the label on the outer carton.
Storage
◆Ambient Temperature:-10℃to +45℃.
◆Relative Humidity: 90% (at +20℃ambient temperature).
◆The storage location shall be free of dust and conductive particles.
◆No corrosive, flammable, or explosive gases; protected from rain and snow.
◆It shall be dry and well ventilated.
◆Stack according to packaging orientation; the number of layers must not exceed the limit indicated on the outer carton.
Precautions
◆The company is not responsible for warranty claims if terminal damage is caused by improper installation, improper use(non-quality issues),or incorrect wiring.
◆If any issues arise during product use, please contact your local distributor or the company's customer service center.

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