Power Design Guide: Selecting ONV-H3064PS or ONV-H3108PS for RFQ-Ready PoE Networks

The Design Problem: PoE Is a Power Decision, Not Only a Network Decision

In many small and medium projects, the first request sounds simple: “We need a PoE switch for cameras.” The real engineering question is more specific. How many powered devices will be connected on day one? How many devices may be added later? Which devices draw the highest current at startup or at night? Do two uplinks need to separate NVR traffic from the wider LAN? Will the switch sit in a small wall box, a security closet, a cabinet, or an equipment room with limited airflow?

For BoFu buyers, the risk is not search traffic or brand familiarity. The risk is buying a switch that works in the lab but fails the site requirement, creates an overloaded PoE budget, lacks headroom for IR cameras, or forces an extra procurement cycle because a port count was underestimated. TPS supports this type of project decision by helping teams connect the product specification with the actual site conditions, including power draw, cable length, installation method, certification needs, and delivery requirements.

The same discipline used in DC power architecture planning also applies to PoE networks: define loads, reserve capacity, protection, heat, wiring, monitoring, and supplier responsibilities before the RFQ is released. For a small CCTV or access control node, that discipline often leads to a clear answer: ONV-H3064PS for compact four-port PoE clusters, or ONV-H3108PS when the project needs eight PoE ports and a larger 100W power budget.

The executable result

By the end of this guide, your team should be able to create an RFQ-ready shortlist with three outputs: a selected model, a documented PoE power budget, and a site integration checklist. That is the information TPS sales and engineering teams need to respond faster with product confirmation, equivalent solution support, project quantity discussion, and any customization or integration requirements.

Model Selection: ONV-H3064PS vs ONV-H3108PS

The two models share the same product concept: unmanaged, plug-and-play Gigabit PoE switching for power and data over Ethernet cabling. They support automatic sensing on the Ethernet ports, store-and-forward full wire speed forwarding, LED indicators for power/link/PoE status, and PoE+ output up to 30W per port. Both are suitable for IP cameras, wireless access points, VoIP phones, access control terminals, intercoms, and other networked edge devices that need reliable power without a separate local adapter.

Choose ONV-H3064PS when the design is bounded and compact

Select ONV-H3064PS when the endpoint list is stable, the design needs up to four PoE+ devices, and 65W gives enough steady-state and startup margin. Typical cases include four-camera corners, small retail security zones, an access control controller with camera and intercom, or a remote wireless coverage point. The two Gigabit uplink ports are useful when one path goes to a recorder or local aggregation switch and the other connects to a router, backbone, or maintenance laptop during commissioning.

Choose ONV-H3108PS when port count or headroom matters

Select ONV-H3108PS when the project needs up to eight PoE+ endpoints or when expansion is likely. The 100W total budget gives more room for mixed loads such as several IR cameras, one or two wireless access points, and VoIP or access control equipment. It is also the safer RFQ choice when the final camera model is not frozen, because actual PoE draw can change with lens heaters, infrared illumination, wireless radio load, or firmware settings.

How to Build a PoE Power Budget That Procurement Can Approve

Procurement needs more than a model number. They need confidence that the supplier quote matches the site, the approved device list, and the required operating margin. Start by listing each powered device, its nominal draw, its maximum draw, and whether it is mission-critical. Then add a reserve for startup current, night operation, temperature variation, and future endpoint additions. A design that barely fits the total budget on paper can create nuisance resets when several cameras switch to IR mode or when devices restart after a power event.

For a simple example, four 12W cameras would draw 48W at steady state. With a reasonable margin, ONV-H3064PS may still be appropriate under its 65W total budget. But if those cameras are specified at 18W maximum, the total becomes 72W before margin, so ONV-H3108PS becomes the more practical project choice. The per-port maximum of 30W PoE+ also matters: a single endpoint should not be treated only as part of the total budget. It must fit the per-port supply capability as well.

Teams that already use load calculation methods for 24V control panels can apply the same thinking here: continuous load, peak load, duty cycle, derating environment, and reserve capacity. When the RFQ includes these assumptions, TPS can confirm whether the selected PoE switch is the right fit or whether an equivalent/customized project solution should be considered.

Use port priority for critical loads

The product specification notes a PoE priority mechanism. In practical terms, this is valuable when the switch approaches its power budget: critical devices should be assigned to high-priority ports so the installation avoids unnecessary overload behavior. For a surveillance project, the highest priority may be perimeter cameras, entry cameras, or devices tied to safety and access events. For an office or education network, it may be specific wireless access points or VoIP phones that support operations during an incident.

Integration, Cabling, Mounting, and Thermal Considerations

Both models support 10/100/1000Base-T Ethernet with auto-sensing and MDI/MDI-X self-adaptation. The specification references twisted pair transmission up to 100 meters depending on Ethernet rate and cable category: Cat3/4/5 for 10BASE-T, Cat5 or later for 100BASE-TX, and Cat5e or later for 1000BASE-T. In an RFQ, do not simply write “existing cable.” State the cable category, expected maximum run, patching method, and whether the site has long outdoor or riser routes that may increase surge or grounding concerns.

The dual uplink design is especially useful for clean topology. One uplink can connect to an NVR, video management system, or local aggregation point, while the second uplink can connect to the router, core LAN, or service port depending on site architecture. For unmanaged switches, this keeps deployment simple: no software configuration is needed, and commissioning teams can focus on cabling, link status, endpoint power draw, and validation.

Plan for airflow even with fanless hardware

The switches use fanless metal housings and are designed for stable operation from -20°C to +55°C with non-condensing humidity. Fanless design reduces noise and mechanical wear, but it does not remove the need for heat planning. Avoid sealed boxes with no conduction path, cable bundles pressing against ventilation surfaces, or mounting positions that trap warm air near other power electronics. If the switch is installed in a cabinet, use the same mindset described in control cabinet thermal design: separate heat sources, preserve airflow, and confirm ambient temperature under real load.

Panel builders should also confirm physical fit early. ONV-H3064PS is more compact at 142 x 115 x 40mm, while ONV-H3108PS is 195 x 130 x 40mm. Both are desktop or wall-mounted products rather than DIN-rail power supplies, so the mechanical plan should include bracket method, cable bend radius, service access, and whether the AC power line can be safely routed to the installation location. For broader cabinet power planning, teams can reference power supply selection checklists and adapt the same procurement discipline to PoE equipment.

Reliability, Standards, and Supplier Qualification

Reliability evaluation should include the product’s electrical, mechanical, and documentation profile. The ONV-H3064PS and ONV-H3108PS specification lists 4KV 8/20us lightning protection, IP30 protection level, CCC, CE mark commercial, CE/LVD EN62368-1, FCC Part 15 Class B, RoHS, one-year warranty, and lifelong maintenance. These are not marketing details; they are RFQ screening items for global projects, especially when equipment will be installed by different contractors across multiple locations.

The switches support relevant Ethernet families under the IEEE 802.3 framework, including Gigabit Ethernet and flow control. For authoritative background on the Ethernet standards ecosystem, buyers can refer to the IEEE 802.3 Ethernet Working Group. In the purchase process, however, the more important action is to ask the supplier to confirm the exact product certification documents, labeling, datasheet revision, and any regional documentation needed for the buyer’s quality system.

TPS can support B2B customers not only with individual product supply, but also with project-level selection, equivalent solution discussion, integration coordination, and engineering consultation. This matters when the PoE switch is one part of a larger system that may also include industrial power supplies, filters, battery chargers, or custom power electronics. If your internal team is deciding whether to source a catalog product or request project support, the build-vs-partner framework is a useful way to define the scope before contacting sales.

What procurement should qualify before issuing a PO

RFQ Package: What to Send TPS for a Faster Technical Response

A strong RFQ should make the application visible. Instead of sending only “quote PoE switch,” include the endpoint list, site topology, required port count, cable category, maximum cable length, AC input conditions, installation environment, target delivery date, and any certificate or compliance documents required by the end customer. For camera-heavy networks, state whether IR, heater, PTZ, or high-power wireless access points are included. For multi-site rollouts, provide site count and whether the same switch should be standardized across all locations.

Use ONV-H3064PS when four PoE+ ports and 65W total power satisfy the site with margin. Use ONV-H3108PS when eight PoE+ ports, 100W total power, or future expansion are more important. If neither model fits the complete system boundary, TPS can discuss related product options, equivalent solutions, custom integration support, or project-level sourcing assistance for global B2B customers.

For teams building the complete electrical system, it may help to combine this PoE switch RFQ with other project design references, such as inrush current and breaker coordination, DC OK monitoring concepts, or redundancy planning. These topics are not direct replacements for PoE switch selection, but they help engineering and procurement teams think in complete system terms.

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