Low voltage Circuit Breakers OROMAX 1000A CODE 4911A

Low voltage Circuit Breakers OROMAX 1600A CODE 4923ALow voltage Circuit Breakers OROMAX 1000A CODE 4909A

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Description

OROMAX series up to 4,000.A
OROMAX 1000A, 1600A 
– withdrawable
OROMAX 1000A
OROMAX 2000A, ASRO 2500A 
– withdrawable
OROMAX 2000A



Coding
F – fixed mount
D – withdrawable
N – manual operated
NM – motor operated
III – 3 pole		 CS. – increased braking capacity
I1 – setting range of overload current
I2 – setting range of shunt current or with a current independent delay
T1= f(I1) – current dependant delay
I3 – fixed shunt release current
Types
Type
I(n)
[A]
Make
Operation
Code
F
D
N
NM
OROMAX III C.S.
1000
*
–
*
–
4903A
OROMAX III C.S.
1000
*
–
–
*
4905A
OROMAX III C.S.
1000
–
*
*
–
4909A
OROMAX III C.S.
1000
–
*
–
*
4911A
OROMAX III C.S.
1600
*
–
*
–
4923A
OROMAX III C.S.
1600
*
–
–
*
4925A
OROMAX III C.S.
1600
–
*
*
–
4929A
OROMAX III C.S.
1600
–
*
–
*
4931A
OROMAX III C.S.
2000
*
–
*
–
4941A
OROMAX III C.S.
2000
*
–
–
*
4943A
OROMAX III C.S.
2000
–
*
*
–
4945A
OROMAX III C.S.
2000
–
*
–
*
4947A
ASRO III
2500
*
–
*
–
4581A
ASRO III
2500
*
–
–
*
4584A
ASRO III
2500
–
*
*
–
4586A
ASRO III
2500
–
*
–
*
4589A
Relays
Type
Code
In(A)
Overload release
Shunt release
Delayed
Instantaneous
I1/In
T1(S)
I2/In
T2(S)
I3(KA)
MK
4975
600-1000
0,5-1
10 to 6 I1
2,4 or 4-12
–
–
1600-2000
2,4 or 4-10
2500
2,4 or 3-6
MKs
4976
600-1000
0,5-1
10 to 6 I1
2,4 or 4-12
0,1-0,5
–
1600-2000
2,4 or 4-10
2500
2,4 or 3-6
MKsi
4977
600-1000
0,5-1
10 to 6 I1
2-4 or 4-12
0,1-0,5
10;20;30
20;30
1600
2-4 or 4-10
2000
2-4 or 4-10
2500
2-4 or 3-6
MKE
4970
600-1000
–
–
2-4 or 4-12
–
–
1600-2000
2-4 or 4-10
2500
2-4 or 3-6
MKEs
4971
600-1000
–
–
2-4 or 4-12
0,1-0,5
–
1600-2000
2-4 or 4-10
2500
2-4 or 3-6
MKEsi
4978
600-1000
–
–
2-4 or 4-12
0,1-0,5
10;20;30
20;30
1600
2-4 or 4-10
2000
2-4 or 4-10
2500
2-4 or 3-6
Technical data
Rated insulation voltage 660V a.c.
Rated operational voltage -III- 380; 500; 660Va.c.
Fixed and withdrawable make
Equipment		 a. EI+ED+DTm
b. EI+ED
c. EI+DTm
Operation Manual
Motor
Supply voltages EI, ED 110; 220; 380; 500Va.c.
DTm 24; 48; 110; 220/230Vd.c.
Motor 110; 220/230Vd.c. and a.c.
Auxiliary contacts 5 Make + 5 Brake
– Operational voltages 220; 380; 500Va.c.
48; 110; 220/230Vd.c.
– Operational currents in AC11 – 2A
in DC11 – 0,25A
Coding
EI – closing electromagnet
ED – opening electromagnet
DTm = under-voltage release
Rated uninterrupted current
In (A)
Poles
Make capacity
lcm (KA)
Brake capacity at 500Va.c
lcu (KA)
1000
III
132
60
1600
III
132
60
2000
III
165
72
2500
III
165
72

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