VEGA B61-300 - Manual (Page 6)

3 Product description
3 .1 Structure
The scope of delivery encompasses:
l Overvoltage arrester B61-300
l Documentation
-
this operating instructions manual
The following illustration shows the configuration of the overvoltage
arrester B61-300:
B61 - 300
OUT
IN
IP 20
m
a
x.
3
0
0
V
A
C
/1
6
A
L1 N
L1 N
PE
PE
4
1
2
3
Fig. 1: Structure of B61-300
1 Terminals Out (protected side)
2 Screw for carrier rail fastening
3 Terminals In (unprotected side)
4 Type label
3 .2 Principle of operation
Voltage surges can be caused by indirect atmospheric discharges
(lightning strokes) or switching operations in the supply network.
Further causes can be inductive or capacitive couplings from other
electrical systems. Voltage peaks (transients) must be expected
especially when long power supply and signal cables are used.
Scope of delivery
Constituent parts
Application area
6 Overvoltage arrester • B61-300
3 Product description
40488
-EN
-110527