Surge Absorber Units
“ZNR”
Surge Absorber Units
The Surge Absorber Unit contains Y, Δ or p connected ZNRs surge absorbers (and, if necessary, a circuit
breaker) in a box.
These Surge Absorber Units are designed for surge protection of industrial electric equipment where reliability
is essential.
● RoHS
compliant
Recommended Applications
Surge Protection of
● Railway/traffic signal control systems
● Distribution line control systems
● Broadcasting systems, communication systems
● Measuring instruments
● Controllers of low voltage distribution line
● Controllers of waterworks
Note : Ask our factory for Product Specification before use.
■ As for Minimum Quantity / Packing Unit
Please see Related Information
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
04
Jan. 2015
Surge Absorber Units
ZNR Surge Absorber Units
Circuits
Maximum
Application Peak
Current
Rated
Voltage
Single-phase two-wire system
Dim.
Part No.
Connection
ERZA1P251ASA
AC 100/
120 V
✽✽
ERZA1P251AR
5000 A
For
Power
Source
1
A
7
AC 400/
440 V
B
7
Part No.
Dim.
Connection
B
ERZA4P251ASA
2
ERZA2P501AS
B
2
7
AC 200/
ERZA1E471BS
220/240 V
AC 400/
440 V
B
7
ERZA3P501AS
ERZA3P102AS
ERZA2E271AS
ERZA2E471AS
ERZA2E471BS
3
B
3
4
B
8
ERZA3E471AS
B
9
B
9
B
8
ERZA3E471BS
ERZA3E102BS
7
4
ERZA4P102AS
4
B
10
B
ERZA4E471AS
10
B
ERZA4E102AS
10
B
ERZA4E271BS
8
B
B
ERZA4P501AS
ERZA4E271AS
8
ERZA3E102AS
ERZA2E271BS
B
B
7
B
B
ERZA1E102BS
B
1
AC 200/
ERZA1E471ASA
220/240 V
ERZA1E271BS
Dim.
Connection
6
A
ERZA1E102AS
ERZA2P251ASA
Part No.
C
B
ERZA1E271ASA
Connection
Three-phase four-wire system
5
AC 400/
440 V
ERZA1P102AS
Dim.
Part No.
Three-phase three-wire system
C
A
AC 100/
120 V
50000 A
1
AC 200/
ERZA1P501AS
220/240 V
AC 100/
120 V
20000 A
✽
ERZA1P251BC
A
Single-phase three-wire system
B
9
B
9
10
B
ERZA4E471BS
10
B
ERZA4E102BS
10
✽ p connection with inductors (specified current: 2 A)
✽✽ p connection with resistors (specified current: 2 A)
5000 A
Rated
Voltage
Part No.
DC 12 V
ERZA5F220AC
DC 24 V
ERZA5F390AC
DC 48 V
ERZA5F680AC
DC 80 V
ERZA5F101AC
Dimensions
Coil: 1 mH max.
Max. continuous current: 0.6 A
D
DC 100 V ERZA5F201ACA
For signal system
(Line to Line use only)
5000 A
DC 12 V
ERZA5F220BC
DC 24 V
ERZA5F390BC
DC 48 V
ERZA5F680BC
DC 80 V
ERZA5F101BC
DC 100 V ERZA5F201BC
Connection
Equipment
For signal system
(Line to Line and
Line to Ground use)
Maximum
Peak
Current
Type D (other : Type E)
Coil: 1 mH max.
Max. continuous current: 0.6 A
Equipment
Application
C
Type D (other : Type E)
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
04
Jan. 2015
Surge Absorber Units
250
300
Dimensions in mm (not to scale)
300
120
120
400
(B)
(A)
3-f 6
160
135
Mounting pitch
160
Mounting pitch
135
3-f 6
83
83
Mounting pitch
85
Mounting pitch
85
105
105
(C)
(D)
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
04
Jan. 2015
Surge Absorber Units
Circuit Diagrams
L1 N L2
L1 L2
L1
N
L2
L1
L2
E
Equipment
E
Equipment
(2)
(1)
R S T N
R
S
T
N
E
R S T
R
S
T
E
Equipment
Equipment
(3)
Resistance : 0.3 Ω
Inductance : 1 mH max.
L1
Equipment
L2
(4)
L1
Equipment
L2
Max. continuous current : 2 A
Max. continuous current : 2 A
(5)
(6)
L1 L2
L1 N L2
L1
L2
E
Equipment
Equipment
(7)
L1
N
L2
E
(8)
R S T N
R S
T
Equipment
R
S
T
N
E
R
S
T
E
(9)
Equipment
(10)
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
04
Jan. 2015