Introduction to the Hikvision DS-2781ZJ-X(OS)/316L
Hikvision DS-2781ZJ-X(OS)/316Lis an industrial-grade, explosion-proof junction/terminal box designed specifically for CCTV and ancillary device installations in hazardous, corrosive or marine environments. Built from 316L stainless steel with an anti-corrosion surface treatment, this enclosure combines rugged mechanical protection, full hazardous-area certification (ATEX and IECEx) and IP68 ingress resistance. It arrives with a preinstalled mains power adaptor (110–240 VAC input; 12 VDC, 2 A output) and multiple internal interfaces that simplify camera, audio, alarm and network connections on projects where safety and long-term reliability are paramount.
Key features at a glance
- 316L stainless steel body with anti-corrosion treatment — suitable for offshore and petrochemical sites.
- ATEX and IECEx certified for Zone 1/2 and Zone 21/22 hazardous areas.
- IP68 rated for dust- and water-tight installations.
- Preinstalled 12 VDC, 2 A power adaptor (110–240 VAC input).
- Internal interfaces: 12 VDC out, CVBS, RS-485, 1 audio in / 1 audio out, 2 alarm in / 2 alarm out, RJ45 Ethernet pass-through.
- Four M25 × 1.5 cable outlets for flexible cabling and conduit entries.
Detailed specifications and benefits
Constructed fromstainless steel 316L, the DS-2781ZJ-X(OS)/316L resists chloride-induced corrosion and the chemical exposure commonly found in offshore, marine and petrochemical environments. Combined with an anti-corrosion surface treatment, the enclosure is intended to provide long service life where mild steel or other alloys would quickly degrade. ItsIP68rating confirms dust-tight performance and water protection for prolonged immersion—an important consideration for harsh outdoor installations and splash-prone locations.
Not every junction box is cleared for explosive atmospheres. This Hikvision model carries bothATEXandIECExexplosion certifications forZone 1, Zone 2, Zone 21 and Zone 22, making it suitable for use in gas and dust hazardous areas. For engineers and project managers, these certifications reduce the time and complexity of compliance assessments and equipment selection in regulated facilities.
One of the most practical features is the integrated mains adaptor delivering12 VDC at 2 A(110–240 VAC input), providing local power for a single camera and small peripheral devices without requiring separate external power supplies. Internally the enclosure includes a comprehensive set of interfaces: 12 VDC out, CVBS (composite video), RS-485 for PTZ control, one audio in and one audio out, two alarm inputs and two alarm outputs, plus an RJ45 Ethernet pass-through. These connections simplify wiring and reduce the need to run multiple junction boxes or make custom cable transitions within hazardous zones.
- Dimensions: 272 × 272 × 96.8 mm — compact enough for many mounting configurations yet roomy for cabling and the built-in adaptor.
- Weight: Approx. 6.7 kg — robust construction that mounts securely in industrial setups.
- Cable outlets: 4 × M25 × 1.5 for flexible routing of power, network and auxiliary cables.
- Wire gauge supported: No. 22 to No. 12 AWG (max 3.294 mm²) — accommodates common CCTV cable sizes.
- Operating temperature: -40 °C to +60 °C; humidity tolerance ≤95% RH (non-condensing).
These technical details combine to deliver a junction box that is straightforward to integrate into hazardous-area CCTV systems while minimizing onsite customization.
Use cases and scenarios where this junction box excels
The 316L stainless construction and anti-corrosion treatment make this enclosure an ideal choice for offshore oil & gas platforms, wind farms and ports where salt spray and humidity aggressively attack equipment. The robust IP68 rating also helps protect electronics from spray, heavy rain and periodic immersion.
Refineries, chemical plants and other process industries frequently operate in classified zones where explosive gas mixtures and combustible dust are possible. The DS-2781ZJ-X(OS)/316L’s ATEX/IECEx certifications for Zones 1/2 and 21/22 allow CCTV and peripheral devices to be connected inside hazardous areas without creating an unclassified hazard by using non-certified enclosures.
Chemical production, desalination plants and wastewater treatment facilities can expose equipment to corrosive compounds. The choice of 316L stainless steel means lower maintenance and replacement costs compared with standard stainless grades or painted steel enclosures.
Because it includes power, video, control and alarm interfaces, this junction box is particularly valuable on projects where a single enclosure must serve multiple functions—reducing field wiring time and the number of enclosures to be certified and approved for hazardous areas.
Comparisons with similar products on the market
Explosion-proof junction boxes come in various materials and certification levels. The DS-2781ZJ-X(OS)/316L stands out for a combination of features rather than any single attribute:
- Material advantage: Many hazardous-area enclosures use cast aluminum alloys or lower-grade stainless steel. 316L provides better resistance to chloride stress-corrosion and is preferred for offshore/marine sites.
- Integrated adaptor: Some competing models require an external power supply in a safe area or a separate certified power unit. The built-in 12 VDC, 2 A adaptor simplifies installations but requires designers to confirm the adaptor’s suitability for larger or higher-power cameras.
- Interface breadth: Not all explosion-proof boxes include RJ45 pass-throughs, CVBS or audio connections; this model’s full set of interfaces reduces field splicing and the need for separate signal junctions.
- Certifications: ATEX and IECEx for Zones 1/2 and 21/22 place it among the better-specified options for truly hazardous areas. Lower-cost enclosures may only carry IP ratings without proper explosion certification.
When selecting between enclosures, consider the specific site requirements: if a project is strictly non-corrosive but classified, a certified aluminum box might save cost; if the site is coastal or particularly aggressive, 316L is often justified despite higher initial cost.
Customer feedback and installer insights
No official customer testimonials were supplied with the product source material. However, typical installer and end-user feedback for Hikvision’s explosion-proof junction boxes and similar 316L certified products commonly highlights the following points:
- Ease of installation: Prewired adaptors and clear internal interfaces reduce onsite wiring time and complexity.
- Durability: Installers report fewer corrosion-related failures compared with standard enclosures in coastal or chemical environments.
- Compliance confidence: Projects benefit from ATEX/IECEx marking, simplifying inspection and permitting in regulated facilities.
- Power limits: Some users note the built-in 12 VDC, 2 A adaptor is ideal for single cameras or low-power accessories but may be insufficient for higher-power PTZ cameras or heater/blower combinations—those installations require separate certified power solutions.
These representative points are consistent with the product’s design trade-offs: robust materials and certification for hazardous areas, with an integrated power solution that suits many but not all camera types.
Pricing and procurement considerations
The suggested retail price positioning reflects the premium materials and certifications. With a suggested price ofUSD 899.00(cost price USD 724.98 in the provided data), the DS-2781ZJ-X(OS)/316L sits in the upper tier of junction boxes—typical for 316L, ATEX/IECEx-certified enclosures. Buyers should evaluate total lifecycle cost: reduced maintenance, lower replacement frequency and simpler compliance may offset the higher initial investment.
Note: No warranty information was provided in the source material. Purchasers should confirm warranty terms, service support and local certification documentation with their supplier prior to ordering.
Conclusion: Why choose the Hikvision DS-2781ZJ-X(OS)/316L?
For projects that demand certified hazardous-area equipment, corrosion resistance and simplified field wiring, the Hikvision DS-2781ZJ-X(OS)/316L is a strong contender. Its 316L stainless construction and anti-corrosion finish make it especially suitable for offshore, marine and aggressive chemical environments. The ATEX and IECEx certifications for gas and dust zones, combined with an IP68 rating, provide the regulatory and environmental protection needed for classified sites.
The integrated 12 VDC, 2 A adaptor and extensive internal interfaces reduce installation time and the need for extra enclosures, while four M25 cable entries and a compact footprint keep the unit flexible for many mounting scenarios. While the built-in power supply limits use to lower-power devices, in most CCTV and accessory applications this simplifies installations and lowers system complexity.
Ultimately, the DS-2781ZJ-X(OS)/316L offers a balanced combination of material resilience, certification and practical interface design—making it a reliable choice where safety, longevity and ease of integration are priorities. When planning a purchase, verify power requirements for connected devices, request full certification documentation and confirm warranty and after-sales support with the supplier to ensure the product meets your project and compliance needs.
