Ruijie RG‑NIS3100‑4GT2SFP‑HP Industrial 4‑Port Gigabit PoE+ Switch, 120W

Introduction: What the Ruijie RG‑NIS3100‑4GT2SFP‑HP offers

The Ruijie RG‑NIS3100‑4GT2SFP‑HP is an industrial, fanless Layer‑2 managed PoE/PoE+ switch designed for deployments where reliability, compact form factor and resistance to harsh conditions matter. With 4× Gigabit PoE/PoE+ RJ45 ports, 2× Gigabit SFP uplinks and a device PoE budget of up to 120 W, it is engineered to power cameras, access points and other edge devices while surviving dust, salt spray and wide temperature swings. Key highlights include a true industrial build with an IP40 aluminium enclosure, redundant DC inputs, advanced Layer‑2 features and multiple management options including Ruijie Cloud.

Key features at a glance

• 4× PoE/PoE+ Gigabit ports(802.3af/at) capable of delivering up to 30 W per port.
• 2× SFP uplinksfor fiber connectivity and longer runs to aggregation points.
• 120 W device PoE budgetenabling multiple cameras or APs to be powered from a single compact switch.
• Fanless, rugged designwith IP40 aluminium enclosure and conformal coating for industrial environments.
• Wide operating temperaturefrom −40°C to +80°C (application dependent).
• Layer‑2 management and securityincluding VLANs, STP/RSTP, LAG, IGMP snooping, ACLs and SNMP.
• Redundant DC power inputs(dual 12–56 V DC) with removable terminal block and alarm relay output for power monitoring.
• 5‑year warrantyand strong MTBF (≈250,000 hours) for long service life.

Detailed specifications and benefits

The RG‑NIS3100‑4GT2SFP‑HP provides 4× 10/100/1000Base‑T ports with PoE/PoE+ (802.3af/at) and 2× 1000Base‑X SFP uplinks. Per port it can supply up to 56 V DC and as much as 30 W (subject to the device and cable). The device has a maximum PoE budget of 120 W — sufficient for several high‑power cameras or a mixed array of cameras and wireless APs. The PoE budget varies with the input voltage, and the unit supports dual DC inputs (12–56 V DC) to enable redundancy and flexible power sourcing in industrial installations.

Designed for demanding environments, the switch is fanless (quiet and dust‑tolerant), housed in an IP40 aluminium enclosure with conformal coating and tested for ESD/surge immunity per industrial IEC standards. It supports DIN‑rail and wall mounting and includes a removable terminal block for secure DC wiring. These mechanical and electrical protections make it well suited to factory floors, outdoor enclosures, transport cabinets and coastal sites where salt spray is a concern.

Despite its compact size, the switch offers a 12 Gbps switching capacity and a forwarding rate of 8.92 Mpps. It includes a 4.1 Mbit packet buffer, an 8,000‑entry MAC table and support for jumbo frames up to 9,216 bytes — features that help maintain predictable performance for video and automation traffic. The MTBF of approximately 250,000 hours and a 5‑year warranty underscore the unit’s longevity for professional deployments.

On the software side, the RG‑NIS3100‑4GT2SFP‑HP supports standard Layer‑2 functionality: VLANs (1–4094), STP/RSTP for loop prevention, LAG for uplink bandwidth aggregation, IGMP snooping to optimize multicast video streams and a suite of access control features. Security mechanisms include ACLs (up to 1,200 entries), 802.1x, DHCP snooping, IP Source Guard and anti‑ARP protections. Management methods include Ruijie Cloud for centralized monitoring and configuration, a local web GUI and SNMP v1/v2c/v3 for integration with existing NMS platforms.

The switch operates across a broad temperature range (−40°C to +80°C, depending on the application) and stores between −40°C and +75°C. It tolerates 5–95% relative humidity (non‑condensing). Physically it is compact (85 × 132 × 165 mm) and lightweight (≈ 1.86 kg with packaging), making it easy to fit into confined cabinets or small outdoor enclosures.

Primary use cases: where this switch excels

• Video surveillance/CCTV networks— The combination of multiple PoE+ ports, a 120 W budget and IGMP snooping makes the switch ideal for powering and carrying feeds from a handful of high‑resolution cameras at the network edge.
• Factory automation and machine‑side networking— Fanless operation, conformal coating and wide temperature tolerance suit dusty, vibration‑prone or temperature‑extreme factory environments where continuous uptime is critical.
• Coastal and outdoor enclosures— Salt‑spray resistance and surge immunity reduce corrosion and electrical vulnerability in coastal installations or exposed sites.
• Remote or distributed PoE deployments— Small substations, kiosks, parking garages, transportation nodes and smart city poles can benefit from a compact, powered switch with fiber uplinks for resilient backhaul.
• Wireless backhaul for outdoor APs— Delivering PoE to outdoor access points while using SFP uplinks for fiber runs helps keep wireless coverage stable across large sites.

How it compares with similar products on the market

Industrial PoE switches vary by port count, PoE budget, temperature rating and management features. The Ruijie RG‑NIS3100‑4GT2SFP‑HP fits a popular niche: small‑footprint, fanless industrial switches with a moderate PoE budget and Layer‑2 management. Compared with typical offerings from other industrial networking vendors, this Ruijie model stands out in several ways:

• Balance of power and size:Many compact industrial switches either sacrifice PoE budget or port count. The RG‑NIS3100‑4GT2SFP‑HP provides four PoE+ ports and a 120 W budget in a compact chassis, making it a strong choice where space is limited but power demands are moderate.
• Fanless, wide‑temperature design:While some industrial switches use small fans that may fail in the field, this Ruijie unit is fully fanless and rated to very low and high temperatures — beneficial for telco cabinets, roadside cabinets and unconditioned enclosures.
• Cloud management:Ruijie Cloud integration provides remote visibility and simplified provisioning, which differentiates it from fully ‘dumb’ unmanaged industrial switches and aligns it with modern managed offerings that reduce onsite maintenance.
• Price to feature ratio:At a suggested retail of USD 349.99, the RG‑NIS3100‑4GT2SFP‑HP is positioned competitively versus similar industrial PoE+ switches whose prices can be higher for comparable feature sets (depending on vendor and warranty). This makes it attractive for installations where cost control is important without compromising reliability.

That said, larger deployments that require dozens of PoE devices per site may prefer switches with higher port counts or larger PoE budgets; those use cases are better served by larger chassis or modular industrial switches. Conversely, unmanaged or extremely low‑cost projects may opt for cheaper, unmanaged industrial PoE switches, but they will sacrifice management, security and warranty benefits.

Customer impressions and reviews

Public and professional feedback for industrial Ruijie hardware emphasizes a few recurring themes: solid build quality, reliable PoE delivery, and straightforward cloud or local management. Installers appreciate the fanless, compact design for restricted spaces and the redundant DC inputs for critical systems. Integrators often highlight the 5‑year warranty and good MTBF figures as reasons to choose the product for long‑term projects.

Typical user comments fall into practical categories: ease of mounting and wiring into DIN‑rail systems, reliable powering of cameras and APs in cold or hot conditions, and useful Layer‑2 features that make VLAN segmentation and multicast handling simpler for video networks. As with all industrial networking gear, professional installers recommend confirming the input voltage plan, grounding practice and environmental requirements during planning.

Conclusion: Why choose the Ruijie RG‑NIS3100‑4GT2SFP‑HP

The Ruijie RG‑NIS3100‑4GT2SFP‑HP is a compelling choice for small‑to‑medium PoE deployments in challenging environments. It combines four PoE/PoE+ Gigabit ports and two fiber uplinks with a substantial 120 W budget in a fanless, compact chassis built for industrial conditions. Layer‑2 features, cloud and SNMP management, and hardened electrical protections make it a practical option for CCTV, factory automation, coastal installations and distributed edge sites.

For organisations that need reliable PoE delivery at the edge without the bulk of larger industrial switches, and that value managed features and a long warranty, the RG‑NIS3100‑4GT2SFP‑HP provides a solid balance of price, capability and durability. At a suggested price point of around USD 349.99 (cost pricing for resellers varies), it offers a robust alternative to both unmanaged low‑cost units and larger, more expensive industrial chassis. Professional installation for DC wiring and earthing is recommended to maximise safety and longevity.

For detailed electrical, mechanical and certification data consult the official Ruijie RG‑NIS3100 series datasheet and installation guide. Evaluate your PoE device power draw, ambient temperature conditions and mounting constraints to ensure the RG‑NIS3100‑4GT2SFP‑HP meets the needs of your specific deployment.