The DNH weatherproof junction box: six M20 entries, earth plate, loop in/out terminals.
The DNH weatherproof junction box is made with six M20 threaded entries, an earth continuity plate and 2.5 mm loop in/out terminals. It is supplied with four M20 blanks and three M20 cable glands, and an Ex-e hazardous area version complements the DNH explosion-proof loudspeaker range.
Six M20 threaded entries, four blanks and three glands supplied
Earth continuity plate and 2.5 mm loop in / loop out terminals
Supplied withFour M20 blanks, three M20 cable glands
Terminals2.5 mm loop in / loop out
EarthingEarth continuity plate
VersionsWeatherproof and Ex-e hazardous area
Description
A distributed PAGA system is a long chain of cable joints, and every joint is a place where
water, corrosion or a mistake can put part of the system out. The junction box is what keeps
those joints controlled: a defined, accessible, sealed point where a loudspeaker line is
terminated, looped onward and, when something goes wrong, isolated and tested.
The DNH box is worth reading in detail, because the detail is the product. Six M20 threaded
entries give enough room for a line in, a line out and drops to loudspeakers without
improvising. It ships with four M20 blanks and three M20 cable glands, so a box arrives ready
to install with unused entries properly sealed rather than taped over - which is exactly the
failure that lets water in six months later. An earth continuity plate carries the earth
through the box rather than leaving it to be bridged by whoever is on site. And 2.5 mm loop
in, loop out terminals are sized for real PAGA cable and arranged for the way these systems
are actually wired.
That loop in, loop out arrangement is what makes line monitoring work. A PAGA system
supervises its loudspeaker lines so that a break or a short is reported rather than discovered
during an emergency, and that supervision depends on the line passing cleanly through each
box. Terminals designed for it keep the monitoring intact and make fault-finding a matter of
working along the loop box by box.
There is also an Ex-e version, which exists to complement the DNH explosion-proof
loudspeaker range. That completeness matters more than it sounds: in a classified area the
loudspeaker, its box, its glands and its cable all have to be suitable together, and a
certified loudspeaker wired into an uncertified box is not a compliant installation. Being
able to take the loudspeaker and the box from the same maker removes the most common gap in a
hazardous-area PAGA scheme.
Features
Six M20 threaded entries. Line in, line out and loudspeaker drops
without improvising extra holes.
Blanks and glands supplied. Four M20 blanks and three M20 cable glands
in the box, so unused entries are sealed properly.
Earth continuity plate. Earth carried through the box by design rather
than by site improvisation.
2.5 mm loop in / loop out terminals. Sized for PAGA cable and arranged
for looped wiring.
Keeps line monitoring intact. Clean pass-through is what lets the system
supervise its loudspeaker lines.
Ex-e version available. Complements the DNH explosion-proof
loudspeakers, so loudspeaker and box match.
Weatherproof as standard. Built for the outdoor and exposed positions
these lines run through.
Applications
Junction boxes appear at every break point in a loudspeaker line.
Outdoor loudspeaker runs. Along walkways, pipe racks and building
exteriors.
Classified areas. The Ex-e version as part of the certified
installation.
Jetties and marine structures. Exposed positions in constant salt.
Process plant. Where a loudspeaker drop leaves a main line.
Extensions and retrofits. Joining new loudspeakers into existing looped
cabling.
Maintenance access points. Where a loop needs to be isolated and tested
without disturbing loudspeakers.
Support & Documents
PT Vivo Asia Teknologi Indonesia designs and commissions public address and general
alarm systems rather than simply supplying the parts. Our scope typically covers:
Acoustic coverage study against your layout and measured background noise levels.
Loudspeaker selection, placement, tapping and zone design.
Amplifier, controller and cabling design, including line monitoring where required.
Supply, installation, termination and commissioning.
Intelligibility testing and sign-off against the applicable standard.
Integration with fire and gas detection, ESD and telephone systems.
Operator training, spares provisioning and ongoing maintenance.
Ratings, approvals and acoustic figures vary by model and are confirmed against the
current manufacturer datasheet at quotation stage. Tell us the areas to be covered, the
hazardous-area classification and the noise levels you are working against, and we will
come back with a coverage design and a full bill of materials.
Use the enquiry button above for a datasheet, a specification or a project quotation.
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