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DB4B Ex d wiring with optional cap AND/OR PPTC
Ex d units:
Connect 100V line connections to terminals marked 'line'
on PCB, looping-out as required. Use supplied flying lead
along with common loop-in, loop-out connections to select
required power level (see section 4 for tapping table).
Ex de units:
Connect 100V line connections to terminals 1 and 2 (loop-in,
loop-out). If loop-in, loop-out functionality is required, the
two common leads must be joined together using a single
crimped bootlace ferrule. Use the supplied flying lead along
with the common lead to select required power level (see
section 4 for tapping table).
4.0 Operation
The line voltage and power rating of the unit is stated on
the unit label. The speaker is available in 3 standard power
ratings from 8 watts to 25 watts and in Ex d or Ex de
versions. Different sound levels can be obtained by selecting
the transformer tappings in the unit. See table below
for details.
DB4B Ex de wiring with optional cap AND/OR PPTC
Alternatively if requested when ordered, the unit can be
supplied with a direct 8Ohm connection to the driver for
connecting to a suitable audio source.
Transformer tappings
1:2
2:3
3:4
1:3
2:4
1:4
Loudspeaker - dB4B
TM252 November 2023 www.eaton.com
Loudspeaker - DB4B
power (W)
25W
15W
8W
25.0
15.0
8.0
12.5
7.5
4.0
6.0
5.0
2.0
4.0
4.0
1.5
2.0
2.0
0.7
1.0
0.8
0.4
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