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Mitsubishi MCB/MCCB/ELCB

  • 品牌
    Mitsubishi
  • 型號

    Quality Mitsubishi energy electrical motor driver Miniature circuit breaker mccb elcb

  • 規格
    Electrical Equipment & Supplies>>Industrial Controls>>Circuit Breakers
  • 備註

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>>Why ELCB?

Prevention of hazards and damage (such as electrical shock, electrical fire, and device damage)
that may occur in electrical equipment (as stipulated in IEC 60364)

 

 

A. Protection against direct contact

Protection of people from harzards(i.e.,electrical shock) that may occur due to touching charged parts of electrical equipment. 

Use if ELCB with rated sensitive current not exceeding 30mA is recommended as the additional protective device.

B. Protection against indirect contact

Protection of people from electrical shock that may occur due to touching exposed conductive parts( such as metal frame of the device) when a fault occurs in electrical equipment.

As one of the protective measures, depending on the condition in TT or TN-S system, the automation cutoff of power supply with ELCB is specified in IEC60364-4-41.

For the details of the installation systems and how to apply ELCB, please refer to the following chart and flowchart.

 
 

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>>What is the different between MCB and MCCB?

MCB is a miniature circuit breaker which is used to break small currents.(Like in domestic LT circuits)
* The ratings usually end up to 100 A
* Interrupting rating of under 18000 A
* Trip characteristics may not be adjusted
* Suitable for low current circuits (low energy requirement), i.e. home wiring.
* Generally, use where normal current is less than 100 A

MCCB is a molded case circuit breaker which has a rugged construction as it can break
Larger currents usually from (100~1000 A)
* Rated current in the range of 10-2500 A
* Thermal operated for overload and Magnetic operation for instant trip in SC(Short Circuit conditions)
* Interrupting rate can be around 10k~200k amps
* Suitable for high power rating and high energy i.e. commercial and industrial use
* Generally, use where normal current is more than 100 A

 

MCCB

NF30-CS/NF125-CV/NF800-CEW

 

Frame (A)
30
100
125
800
Model
NF30-CS
NF125-CV
NF800-CEW
Rated current In (A)

Rated ambient temperture 40°C (45°C for marine use)
3, 5, 10, 15, 20, 30
50 (60) 63

(75) 80 100 
125
Adjustable

400 450 500 600 700 800
Number of poles
2
3
2/3
2/3
3
Rated insulation voltage 
Ui (V)
500
600
600
690
Rated short-circuit breaking capacities (kA)
IEC 60947-2

EN 60947-2

(Icu/Ics)
AC
690V
-
-
-
-
500V
-
7.5/4
7.5/4
18/9
440V
-
10/5
10/5
36/18
415V
1.5/1.5 
10/5
10/5
36/18
400V
1.5/1.5 
10/5
10/5
36/18
380V
1.5/1.5 
10/5
10/5
40/20
230V
2.5/2 (240V)
30/15
30/15
50/25
200V
2.5/2 (240V)
30/15
30/15
50/25
DC
250V
-
7.5/4 (*4)
7.5/4 (*4)
-
Rated impulse withstand voltage Uimp (kV)
4
8
8
8

ELCB

NV32-SV/NV125-SV/NV800-SEW

Frame (A)
30
32
100
125
800
Model
NV32-SV
NV125-SV
NV800-SEW
Rated current In (A)

Rated ambient temperture 40°C
(5) 6 10 (15)

16 20 25 (30)
(32)
(15) 16 20 (30) 32 40 50

(60) 63 (75) 80 100 (*3)
125
Adjustable 400 450 500 600 700 800
Number of poles
3
3
3,4
3,4
3
Phase line (*1)
3f3W, 1f3W,
1f2W
3f3W, 1f3W,
1f2W
3f3W,1f3W,1f2W
3f3W, 1f3W,1f2W
Rated operational voltage Ue (V) (*2) AC
100-440
100-440
100-400/200-440
200-440
High-speed type 
Rated current sensitivity (mA)
30,100/200/500

selectable
30,100/200/500

selectable
30,100/200/500

selectable
-
Max. operating time (s)
at I∆n
0.1
0.1
0.1
-
at 5I∆n
0.04
0.04
0.04
-
Time-delay type 
Rated current sensitivity (mA)
-
-
(100/200/500selectable)
100/200/500selectable
Max. operating time (s) (*3)
-
-
(0.45/1.0/2.0selectable)
0.45/1.0/2.0selectable
Internal non-operating (s) (or more)
-
-
(0.1/0.5/1.0)
0.1/0.5/1.0
Earth leakage indication system
Mechanical type (button)

 

 

Image result for mitsubishi MCCB factory

 

 

 

 

總公司/高雄營業所
高雄市燕巢區安林路1號
TEL:07-6167936   FAX:07-6162831
Email:rst@rstpower.com.tw
台北營業所
新北市土城區中央路三段87號3F
TEL:02-22677936
FAX:02-22687936
台中營業所
台中市西屯區天保街11號
TEL:04-23507936
FAX:04-23507923