Eaton DB4B Manuel Technique page 6

Loudspeaker - DB4B
English
fixings are unscrewed, the cover can be lifted away from
the enclosure to gain access to the interior. The cover
fixings are captive and will remain in the cover.
On Ex de versions the removable cover is secured using 3
off M5 cover screws (4.0mm A/F hexagon key). Once the
cover fixings are unscrewed, the cover can be lifted away
from the enclosure to gain access to the interior. The cover
fixings are captive and will remain in the cover. All terminal
screws, used and unused, shall be tightened down.
Wiring details
DB4B Standard wiring
For standard units, connect power connections to
For standard units, connect power connections to numbered terminals to obtain power tapping required (see section 4
numbered terminals to obtain power tapping required
for tapping table). For loop-out connections, use second set of numbered terminals.
DB4B 8Ohm Ex d wiring
For direct connection 8 Ohm units, connect power from
amplifier to terminals as detailed, taking note of maximum
For direct connection 8 Ohm units, connect power from amplifier to terminals as detailed, taking note of maximum
Loudspeaker rating. Use second pair of terminals for
Loudspeaker rating. Use second pair of terminals for loop-out connections as required.
loop-out connections as required.
2 2
Loudspeaker - dB4B
Once termination is complete, carefully replace the cover
assembly back onto the body, avoiding damage to the
mating surfaces. Tighten the cover screws evenly. On Ex
de certified versions, ensure the maximum torque value for
the cover screws is observed, as marked on the Ex e cover.
Ensure the O-ring is seated correctly on the cover during
re-assembly. On Ex d certified versions, ensure the required
maximum gap of 0.04mm is maintained between the cover
and the base once assembled.
DB4B Standard Ex de wiring
(see section 4 for tapping table). For loop-out connections,
use second set of numbered terminals.
DB4B 8Ohm Ex de wiring
TM252 November 2023 www.eaton.com