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Factory directly MCCB CJM3 Series Moulded Case Circuit Breaker CE CB

Short Description:

Application

CJMM1 series moulded case circuit breaker(hereinafter referred to as circuit breaker) is pplicable for AC 50/60HZ power distribution network circuit with rated insulation voltage of 800V, rated operation voltage of 690V and rated operation current from 10A to 630A, it’s used to distribute power and prevent circuit and power supply equipment from damage due to overload, short circuit, under voltage and other faults, it’s also used for infrequent start of motor as well as overload, short circuit and under voltage protection.This circuit breaker owns advantages of small volume, high breaking capacity, short arcing (or noarcing)etc, it can be equipped with accessories like alarm contact, shunt release, auxiliary contact etc, it’s an ideal product for user. The residual current circuit breaker can either be vertically installed (vertical installation) or be horizontally installed (horizontal installation) The product is in accordance with the standards of IEC60947-2 and Gb140482


Product Detail

Product Tags

We thinks what clients think, the urgency of urgency to act inside the interests of a customer position of basic principle, allowing for much better high quality, reduce processing costs, charges are additional reasonable, won the new and previous customers the support and affirmation for Factory directly MCCB CJM3 Series Moulded Case Circuit Breaker CE CB, We’ve been sincerely looking forward to cooperate with shoppers all over the globe. We believe we can satisfy you. We also warmly welcome prospects to go to our company and purchase our goods.
We thinks what clients think, the urgency of urgency to act inside the interests of a customer position of basic principle, allowing for much better high quality, reduce processing costs, charges are additional reasonable, won the new and previous customers the support and affirmation for China Moulded Case Circuit Breaker and Miniature Circuit Breaker, Based on our guiding principle of quality is the key to development, we continually strive to exceed our customers’ expectations. As such, we sincerely invite all interested companies to contact us for future cooperation, We welcome old and new customers to hold hands together for exploring and developing; For more information, please feel free to contact us. Thanks. Advanced equipment, strict quality control, customer-orientation service, initiative summary and improvement of defects and extensive industry experience enable us to guarantee more customer satisfaction and reputation which, in return, brings us more orders and benefits. If you are interested in any of our products and solutions, make sure you feel free to contact us. Inquiry or visit to our company are warmly welcome. We sincerely hope to start a win-win and friendly partnership with you. You can see more details in our website.

Product Model

CJ:Enterprise code
M:Moulded case circuit breaker
1:Design No
□:Rated current of frame
□:Breaking capacity characteristic code/S denotes standard type (S can be omitted)H denotes higher type

Note: There are four types of neutral pole (N pole) for four phases product.The neutral pole of type A is not equipped with over-current tripping element, its always switched on, and it is not switched on or off together with other three poles.
The neutral pole of type B is not equipped with over-current tripping element, and it’s switched on or off together with other three poles(the neutral pole is switched on before being switched off)The neutral pole of type C is equipped with over-current tripping element, and it’s switched on or off together with other three poles(the neutral pole is switched on before being switched off) The neutral pole of type D is equipped with over-current tripping element, it’s always switched on and is not switched on or off together with other three poles.

Table 1

Accessory name Electronic release Compound release
Auxiliary contact,under voltage release,alam contact 287 378
Two auxiliary contact sets,alarm contact 268 368
Shunt release, alarm contact, auxiliary contact 238 348
Under voltage release,alarm contact 248 338
Auxiliary contact alarm contact 228 328
Shunt release alarm contact 218 318
Auxiliary contact under-voltage release 270 370
Two auxiliary contact sets 260 360
Shunt release under-voltage release 250 350
Shunt release auxiliary contact 240 340
Under-voltage release 230 330
Auxiliary contact 220 320
Shunt release 210 310
Alarm contact 208 308
No accessory 200 300

Classification

  • By breaking capacity: a standard type(type S) b higher breaking capacity type(type H)
  • By connection mode: a front board connection, b back board connection, c plugin type
  • By operation mode: a direct handle operation, b rotation handle operation,c electrical operation
  • By number of poles: 1P, 2P, 3P, 4P
  • By accessory: alarm contact, auxiliary contact, shunt release, under voltage release

Normal Service Condition

  • The altitude of the installation site shall not exceed 2000m
  • Ambient air temperature
  • The ambient air temperature shall not exceed +40℃
  • The average value shall not exceed +35℃ with in 24 hours
  • The ambient air temperature shall not be less than -5℃
  • Atmosphere condition:
  • 1There lative humidity of atmosp here shall not exceed 50% at highest temperature of +40℃,and it can be higher atalower temperature,when theaver agelowest temperature in the wettest month doesn’t exceed 25℃ can be 90%,conden sationon product surfacedue to temperature change must be takenin to account.
  • The pollution level is class 3

Main Technical Parameter

1 Rated value of circuit breakers
Model Imax (A) Specifications (A) Rated Operation Voltage(V) Rated Insulation Voltage(V) Icu (kA) Ics (kA) Number of Poles (P) Arcing Distance (mm)
CJMM1-63S 63 6,10,16,20
25,32,40,
50,63
400 500 10* 5* 3 ≤50
CJMM1-63H 63 400 500 15* 10* 3,4
CJMM1-100S 100 16,20,25,32
40,50,63,
80,100
690 800 35/10 22/5 3 ≤50
CJMM1-100H 100 400 800 50 35 2,3,4
CJMM1-225S 225 100,125,
160,180,
200,225
690 800 35/10 25/5 3 ≤50
CJMM1-225H 225 400 800 50 35 2,3,4
CJMM1-400S 400 225,250,
315,350,
400
690 800 50/15 35/8 3,4 ≤100
CJMM1-400H 400 400 800 65 35 3
CJMM1-630S 630 400,500,
630
690 800 50/15 35/8 3,4 ≤100
CJMM1-630H 630 400 800 65 45 3
Note: When the test parameters for the 400V, 6A without heating release
2 Inverse time breaking operation characteristic when each pole of overcurrent release for power distribution is powered on at the same time
Item of test Current (I/In) Test time area Initial state
Non-tripping current 1.05In 2h(n>63A),1h(n<63A) Cold state
Tripping current 1.3In 2h(n>63A),1h(n<63A) Proceed immediately
after No.1 test
3 Inverse time breaking operation characteristic when each pole of over-
current release for motor protection is powered on at the same time.
Setting Current Conventional time Initial State Note
1.0In >2h Cold State
1.2In ≤2h Proceeded immediately after the No.1 test
1.5In ≤4min Cold State 10≤In≤225
≤8min Cold State 225≤In≤630
7.2In 4s≤T≤10s Cold State 10≤In≤225
6s≤T≤20s Cold State 225≤In≤630
4 The instantaneous operation characteristic of circuit breaker for power distribution shall be set as 10in+20%, and the one of circuit breaker for motor protection shall be set as12ln±20%

Outline Installation Size

CJMM1-63, 100, 225, Outline and Installation Sizes (Front board connection)

Sizes(mm) Model Code
CJMM1-63S CJMM1-63H CJMM1-63S CJMM1-100S CJMM1-100H CJMM1-225S CJMM1-225
Outline Sizes C 85.0 85.0 88.0 88.0 102.0 102.0
E 50.0 50.0 51.0 51.0 60.0 52.0
F 23.0 23.0 23.0 22.5 25.0 23.5
G 14.0 14.0 17.5 17.5 17.0 17.0
G1 6.5 6.5 6.5 6.5 11.5 11.5
H 73.0 81.0 68.0 86.0 88.0 103.0
H1 90.0 98.5 86.0 104.0 110.0 127.0
H2 18.5 27.0 24.0 24.0 24.0 24.0
H3 4.0 4.5 4.0 4.0 4.0 4.0
H4 7.0 7.0 7.0 7.0 5.0 5.0
L 135.0 135.0 150.0 150.0 165.0 165.0
L1 170.0 173.0 225.0 225.0 360.0 360.0
L2 117.0 117.0 136.0 136.0 144.0 144.0
W 78.0 78.0 91.0 91.0 106.0 106.0
W1 25.0 25.0 30.0 30.0 35.0 35.0
W2 - 100.0 - 120.0 - 142.0
W3 - - 65.0 65.0 75.0 75.0
Install Sizes A 25.0 25.0 30.0 30.0 35.0 35.0
B 117.0 117.0 128.0 128.0 125.0 125.0
od 3.5 3.5 4.5 4.5 5.5 5.5

CJMM1-400,630,800,Outline and Installation Sizes (Front board connection)

Sizes(mm) Model Code
CJMM1-400S CJMM1-630S
Outline Sizes C 127 134
C1 173 184
E 89 89
F 65 65
G 26 29
G1 13.5 14
H 107 111
H1 150 162
H2 39 44
H3 6 6.5
H4 5 7.5
H5 4.5 4.5
L 257 271
L1 465 475
L2 225 234
W 150 183
W1 48 58
W2 198 240
A 44 58
Install Sizes A1 48 58
B 194 200
Od 8 7

Back Board Connection Cut-out Diagram Plug In

Sizes(mm) Model Code
CJMM1-63S
CJMM1-63H
CJMM1-100S
CJMM1-100H
CJMM1-225S
CJMM1-225H
CJMM1-400S CJMM1-400H CJMM1-630S
CJMM1-630H
Sizes Of Back Board Connection Plug in Type A 25 30 35 44 44 58
od 3.5 4.5*6
deep hole
3.3 7 7 7
od1 - - - 12.5 12.5 16.5
od2 6 8 8 8.5 9 8.5
oD 8 24 26 31 33 37
oD1 8 16 20 33 37 37
H6 44 68 66 60 65 65
H7 66 108 110 120 120 125
H8 28 51 51 61 60 60
H9 38 65.5 72 - 83.5 93
H10 44 78 91 99 106.5 112
H11 8.5 17.5 17.5 22 21 21
L2 117 136 144 225 225 234
L3 117 108 124 194 194 200
L4 97 95 9 165 163 165
L5 138 180 190 285 285 302
L6 80 95 110 145 155 185
M M6 M8 M10 - - -
K 50.2 60 70 60 60 100
J 60.7 62 54 129 129 123
M1 M5 M8 M8 M10 M10 M12
W1 25 35 35 44 44 58

What is MCCB?

Molded case circuit breakers are electrical protection devices that are designed to protect the electrical circuit from excessive current. This excessive current can be caused due to an overload or short circuit. The molded case circuit breakers can be used in a wide range of voltages and frequencies with a defined lower and upper limit of adjustable trip settings. In addition to tripping mechanisms, MCCBs can also be used as manual disconnection switches in case of emergency or maintenance operations. MCCBs are standardized and tested for overcurrent, voltage surge, and fault protection to ensure safe operation in all environments and applications. They work effectively as a reset switch for an electric circuit to disconnect power and minimize damage caused by a circuit overload, ground fault, short circuits, or when current exceeds the current limiting.

 

The Importance of Molded Case Circuit Breakers in Ensuring Electrical Safety

In today’s modern world, electricity is an important part of our daily lives. From powering our homes to running industrial machinery, ensuring the safety and reliability of electrical systems is critical. Molded case circuit breaker (MCCB) is a key component that plays an important role. In this blog, we will explore the importance of MCCBs in ensuring electrical safety.

MCCB is an electrical protection device designed to protect circuits and equipment from overloads and short circuits. They are commonly used in residential, commercial and industrial applications to prevent damage to electrical systems and, more importantly, reduce the risk of electrical fires.

One of the main functions of MCCB is to interrupt the current flow in case of overload or short circuit. This is critical to preventing wires and components from overheating, which can lead to fires and catastrophic damage. By tripping circuits and cutting off power, MCCBs help avoid potential hazards and protect people and property.

Additionally, MCCB provides a level of convenience and flexibility to electrical systems. They can be easily reset after a trip, allowing power to be quickly restored without the need to replace any components. This not only saves time and effort, it also minimizes downtime and disruption to daily operations.

In addition to their function of preventing electrical hazards, molded case circuit breakers help improve the overall efficiency and reliability of electrical systems. By protecting against overloads and short circuits, they help maintain the integrity of electrical equipment and extend its service life. This in turn reduces the need for costly repairs and replacements, saving time and money in the long run.

It’s worth noting that not all MCCBs are the same. When selecting an MCCB for a specific application, it is crucial to consider factors such as current rating, breaking capacity and operating voltage. These specifications should be carefully matched to the requirements of the electrical system to ensure proper protection and performance.

Additionally, regular maintenance and testing of the MCCB is critical to ensure its continued effectiveness. Regular inspections and tests can help identify any potential problems or wear and tear so repairs or replacements can be made as needed.

To sum up, molded case circuit breakers play a vital role in ensuring electrical safety and reliability. By protecting against overloads and short circuits, they help prevent electrical hazards and minimize the risk of fire. Additionally, they help increase the efficiency and longevity of electrical systems, making them an indispensable component in modern electrical installations. Investing in quality MCCB and ensuring it is properly maintained is vital to protecting people and property from the dangers of electrical faults.We thinks what clients think, the urgency of urgency to act inside the interests of a customer position of basic principle, allowing for much better high quality, reduce processing costs, charges are additional reasonable, won the new and previous customers the support and affirmation for Factory directly MCCB CJM3 Series Moulded Case Circuit Breaker CE CB, We’ve been sincerely looking forward to cooperate with shoppers all over the globe. We believe we can satisfy you. We also warmly welcome prospects to go to our company and purchase our goods.
Factory directly China Moulded Case Circuit Breaker and Miniature Circuit Breaker, Based on our guiding principle of quality is the key to development, we continually strive to exceed our customers’ expectations. As such, we sincerely invite all interested companies to contact us for future cooperation, We welcome old and new customers to hold hands together for exploring and developing; For more information, please feel free to contact us. Thanks. Advanced equipment, strict quality control, customer-orientation service, initiative summary and improvement of defects and extensive industry experience enable us to guarantee more customer satisfaction and reputation which, in return, brings us more orders and benefits. If you are interested in any of our products and solutions, make sure you feel free to contact us. Inquiry or visit to our company are warmly welcome. We sincerely hope to start a win-win and friendly partnership with you. You can see more details in our website.


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