User manual

Product Selection
 Highest energy absorption capability of all Bulletin 4983 products
 Robust design avoids unnecessary replacement
 Visual fault indicator linked to internal thermal disconnect
 Automatic trigger for SPD replacement
 Safety remote signaling standard
Bulletin 4983-DH is a heavy-duty surge protector. This SPD combines a high-energy varistor (MOV)
network with a gas discharge tube to increase performance in protection level, life duration, and
suppression of leakage current. The Bulletin 4983-DH product is connected in parallel and can be
located in the feeder circuit.
AC Network
No. of
Poles
and
Devices
Needed
Con-
nection
Mode
MCOV
(U
c
) [V
AC]
Lightning
Current
10/350
μs (I
imp
)
[kA]
Max.
Discharge
Current
8/20μs
(I
max
) [kA]
Protection
Level (U
p
)
UL 1449
SVR [kV]
Cat. No.
230/400V
(1-wire)
1
L/G or
N/G
330 25 70
1.5 
0.6
4983-DH300-25
230/400V
(1-phase: TNS)
2
230/400V
(3-phase: TNC
3
220…230V
(3-phase + N:
TNS)
4
230/400V
(1-wire)
1
L/G or
N/G
330 50 70 1.5 ‡ 0.6
4983-DH300-50
230/400V
(1-phase: TNS)
2
230/400V
(3-phase:
TNC)
3
230/400V
(3-phase + N:
TNS)
4
 250 A max. fuses required to protect the surge protector in case of short-circuit failure. They must be installed in
series with each pole of the sur
ge protector.
‡ 500 A max. fuses r
equired to protect the surge protector in case of short-circuit failure. They must be installed in
series with each pole of the surge protector.
Νοτε: N = Neutral
L/N = Line/neutral
N/G = Neutral/gr
ound
MCOV = Max. Continuous Operating Voltage
SVR = Suppressed Voltage Rating
DIN Rail Heavy-Duty AC Surge Protective Devices, 4983-DH
LOGIC
Rockwell Automation
Visit our website: www.ab.com/catalogs
2-48
Bulletin 4983
Filter and Surge Protective Device