34
en | Installation wiring
PRAESENSA
2021.12.21 | V0.15b | F.01U.402.882
Underwriters Laboratories Listing Document (ULLD)
Bosch Security Systems B.V.
3.4
Amplifier, 600W 4-channel | PRA-AD604
3.4.1
Connections
Figure 3.2:
Rear view connections
Safety ground
48 VDC input A‑B
48 V
Lifeline interface
Loudspeaker output
A‑B (1‑4)
End-of-line device
Network port 1‑2
1
Field connections
Connection
Field
wiring
Circuit class /
Ilimited
IMax
/ minimum AWG
Remarks
Safety ground
-
-
-
48 VDC input A‑B (1-3)
NO*
Class 1
not power limited
7 A
Wiring max.: 28-12 AWG
Lifeline control/audio/supply
interface (1‑3, to amplifier 1‑3)
NO*
Class 1
not power limited
-
Loudspeaker output A‑B (1‑4)
YES
Class 1
not power limited
14 A
Wiring Class A or Class B
Wiring max.: 28-12 AWG
End-of-line device
NO*
Class 1
not power limited
14 A
Intended for connection
to a PRA‑EOL‑US in case
of Class A wiring.
Network port 1‑2
NO*
Class 2
power limited
Wiring Class N
* Must stay within same room <20 ft and within metal conduit.
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