OPEN ELECTRIC CO.,LTD.

Open Electric Co.,Ltd.

Products

Electrical Distribution (178)
Industrial Control (517)
Power Management (534)

Search Catalog

You are here: Home >> Products >> MCCB >> OM2

OM2

OM2
catalogue download Catalogue Download
print this page Print This Page
bookmark this page Bookmark This Page
tell a friend
live messenger Live Messenger
skype me Skype Me
e-mail us sales@opengroup.cc
Add to Basket Inquiry Basket

1.Application
OM2 series moulded case circuit breaker , it's applicable circuit of AC 50Hz(or 60Hz),ratedinsulation voltage 690V(OM2-125 500V),rated operating voltage AC 690V or below ,rated oper-ating current 12.5-1600A, for distribute energy of electric and infrequent making and breakingcircuit in normal condition. The circuit-breakers are provided with the function of the protectionagainst overload and short circuit and under-voltage. The circuit breakers comply with standardof IEC60947-2.The circuit-breakers are double insulating (Inm=250A or above), the controlcircuit of the accessories is set apart with the main circuit , and doesn't need to open the coverof the circuit-breaker when install the accessories.

2. Specification

Type
Pole number
Rated insulating voltage(V)
Rated operating voltage(V)
Ultimate short circuitbreaking capacity Icu(KA)
Rated short-circuitserrice breakingcapocity Ics(%icu)
Utilization category
AC380V(400)
AC660V(690)
OM2-125L
1,2,3,4
500
500
25
-
50%
A
OM2-160L
3,4
690
690 and below
35
8
75%
OM2-160M
50
10
75%
OM2-250L
800
35
14
100%
OM2-250M
65
18
75%
OM2-250H
85
20
75%
OM2-400L
35
18
100%
OM2-400M
65
22
100%
OM2-400H
100
30
75%
OM2-630L
35
20
100%
OM2-630M
50
22
100%
OM2-630H
65
25
100%
OM2-800L
35
20
100%
OM2-800M
50
22
100%
OM2-800H
65
25
100%
OM2-1250/1600L
3
50
20
100%

3. Trip units main technical parameter (see table 2)
Type
Thermal magnetic release
Electronic release
Rated currentIn(A)
Note
Ratedcurrent In(A)
Note
OM2-125
12.5,16,20,25,32,40,50,63,80,100,125
T fixedM fixed
-
 
OM2-160
16,20,25,32,40,50,63,80,100,125,160
T adjustable (0.7~1In)M fixed
-
 
OM2-250
100,125,160,180,225,250
T adjustable (0.7~1In)M fixed
-
 
OM2-400
225,250,315,350,400
T fixed or adjustable (0.7~1In)M fixed
320,400
I1=0.4...1×In OM2 PR211(L-LI)
I1=0.4...1×In OM2 PR212(LSI-LSIG)
Tripping between 1.05...1.3×I1(IEC60947-2) I2t=constant(Long-time overload protection)
I2=1-2-3-4-6-8-10×In
t2=0.05s,0.1s,0.25s,0.5s adjustable(Short-circuit short time delay protection)
I3=1.5-2-4-6-8-10-12×In(Instantaneous short-circuit protection)
I4=0.2-0.3-0.4-0.6-0.8-0.9-1×In
t4= 0.1s, 0.2s, 0.4s, 0.8s adjustable(Earth fault protection)
OM2-630
400,500,630
T fixedM fixed
630
OM2-800
630,700,800
T fixedM fixed
800
OM2-1250
-
-
800,1000,1250
OM2-1600
-
-
1000,1250,1600

Note: T-thermal M-magnetic L-long time S-short time relay I-instantaneous G-earth fault OM2-125/160 In=12.5,16,20,32,40 magnetic protection that is fixed at 500A.

4. Accessories
4.1 The external accessories of the breaker
Motor-driven operation device
1) Wiring diagram of type CDM electromagnetic operation device(fitting OM2-125,160,250) seethe following drawing (wiring diagram of the external accessories of the breaker in the dottedframe)
Code description: SB1,SB2 stand for push button.(provided by users themselves) Number "1","2","3" stand for number of wiring terminals.Voltage rating: AC50Hz 230V 400V, DC 220V2) Wiring diagram of type CD motor-driven operation device (fitting OM2-400 630 800) seebelows (wiring diagram of the external accessories of the breaker in the dotted frame)
Code description: SB1,SB2 stand for push button. (provided by users themselves) "X" stands for line connection terminalsVoltage rating: AC50Hz 230V 400V; DC220V

Rotary handle
Economic extended rotary handleDegree of protection:IP30Function:
1) With indication of isolation
2) Indication of three positions 0(off) I(on) and tripped
3) Door opening prevented when circuit breaker is on

4.2 The internal accessories of the breaker
Undervoltage release
Us: AC50/60Hz 400V, 230VWhen the operation voltage is 35%~70% of the rated voltage, the under-voltage release shouldmake the breaker trip correctly.When the operation voltage is 85%~110% of the rated voltage, the under-voltage release shouldmake the breaker close.In case of the operation voltage less than 35% of the rated voltage, the under-voltage shouldprevent the breaker from closing.Note: Only the under-voltage release should be energized in advanced, the breaker could berecramped and turned-on, otherwise the breaker will be damaged.

Shunt release
Us: AC50/60Hz 400V 230V; DC110V 220VThe shunt release should make the breaker trip reliably when the operation voltage is 70%~110%of the rated control voltage

Auxiliary Contact

When the breaker is in"off"
Size2N/O+2N/C1N/O+1N/C
When the breaker is in"on"
When the breaker is in "off", the contacts switch from "close" to "open".When the breaker is in "off", the contacts switch from "open" to close"

 

The position of the breaker in "off" or "on"
The position of the breaker in "free release"(alarm)
B11 and B12 switch from "close" to "open", statusof B11 and B14 switch from "open" to "close"


Auxiliary contact and Alarm contact: Auxiliary contact is as some as Alarm contact , the tech-nical parameter(see table 3)

table3
Rated heatingcurrent Ith (A)
Rated operating current Ie(A)
Suited Frame Inm(A)
AC 380V
DC 220V
3
0.3
0.15
125, 160
3
0.4
0.15
250, 400
3
0.4
0.15
630, 800,1250, 1600


5.Installation
Circuit breaker may be mounted vertically, horizontally or flat on their back without any derating of characteristics.
6.Fix
Mounting on backplate.
7.Connection
Front panel connection , black panel connection , plug-in connection
8.Outline and Installation Dimension
Type
Outline Dimensions
Installation Dimensions
W
L
H
H1
L1
C
A
B
d
OM2-125
78
120
71
91
102
25
25
100
4.5
OM2-160
90
120
71
93
102
30
30
100
4.5
OM2-250
105
170
103.5
135
139
35
35
139
5.5
OM2-400
140
254
101.5
135
218
43.75
43.75
214
5.5
OM2-630/800
210
268
103.5
159
241
70
70
237
5.5
OM2-1250/1600
210
406
138.5
204.5
326
70
70
378
5.5
 
 
MCCB :: RCBO :: Residual Current Circuit Breaker :: Air Circuit Breaker :: Distribution Box :: Surge Protective Device :: Moulded Case Circuit Breaker
OPEN Electrical Technology Co., Ltd All Rights Reserved | Sitemap