Comnet Industrial 90W 10G bt compliant Power over Ethernet Injector - CN1IPSBT-DC

Comnet CN1IPSBT-DC Industrial 90W 10G PoE Injector

Overview

The Comnet CN1IPSBT-DC is an industrial-grade PoE injector built to deliver 90 watts of IEEE 802.3bt Type 4 compliant power across extended cable runs in harsh outdoor and unconditioned environments. Designed for surveillance systems, IP-addressable factory automation, transportation infrastructure, and access control deployments, the CN1IPSBT-DC maintains backward compatibility with earlier PoE standards (802.3at and 802.3af) while supporting full 10-gigabit Ethernet throughput on both its data and power injection ports. Operating reliably from -40°C to +75°C, this compact DIN-rail-mountable unit eliminates the need for separate power conditioning in remote or roadside installations where traditional powered devices fall short.

Key Features

• IEEE 802.3bt Type 4 Compliance: Delivers up to 90 watts of PoE to compatible powered devices — the maximum defined in the current standard. This overhead matters when you're powering high-draw equipment like motorized PTZ cameras, industrial heaters, or multi-radio access points that earlier PoE+ (25.5W) simply cannot sustain. The CN1IPSBT-DC lets you size power once and deploy without mid-project discovery that a device draws too much current.
• 10/100/1000/2.5G/5G/10GBASE-T Dual Ports: Both Ethernet and PSE ports auto-negotiate across the full gigabit and multi-gigabit speed range. This future-proofs your infrastructure — you can run 10G uplink to your data center while delivering legacy 100BASE-T to older PoE devices on the same injector, with automatic detection handling the speed negotiation. No manual configuration required.
• Redundant DC Input (52–56 VDC): Accepts redundant operating power inputs via screw-clamp terminals rated for 14–22 AWG wire. Two included five-foot power cords eliminate field sourcing and minimize installation time. If one power path fails, the backup takes over automatically — mission-critical for unattended remote sites where downtime translates to lost surveillance or process control.
• Industrial Temperature Rating (-40°C to +75°C): Operates reliably in extremes where consumer PoE switches and injectors shut down. This range covers frozen dock areas, sun-baked roadside cabinets, and uninsulated kiosks without requiring external climate control, cutting operational overhead and reducing single points of failure in distributed deployments.
• Passive Convection Cooling: No fans, no moving parts, no noise or maintenance burden. Convection design is inherently reliable in dusty, vibration-prone industrial environments. Sufficient space around the device (per datasheet guidance) maintains passive heat dissipation even under sustained 90W load, making it suitable for sealed cabinet mounting where fan airflow is impractical.
• DIN Rail and Wall Mount: Compact form factor (4.1" × 1.3" × 3.2") mounts directly to standard 35mm DIN rail (TS-35 × 7.5 or TS-35 × 15 profile) or wall using included brackets. Integrates seamlessly into control cabinets, roadside enclosures, or outdoor junction boxes without custom fabrication or additional frame kit expense.
• NDAA and TAA Compliance: Cleared for U.S. federal procurement and compliant with Section 889 restrictions on certain telecommunications equipment. Required documentation for government, critical infrastructure, and CISA-regulated environments eliminates sourcing friction for regulated deployments.
• Reverse Polarity Protection: Automatic safeguard against accidental DC wiring reversal — common in field installations where power terminals are hastily wired in harsh conditions. Eliminates device damage and eliminates diagnostic confusion between a bad injector and a wiring error.
• MTBF >100,000 Hours: Typical lifespan well exceeds 11 years of continuous operation, a realistic reliability target for infrastructure meant to outlive a single technology refresh cycle. Combined with passive design (no fans to wear), this translates to low total cost of ownership over a multi-year deployment.

Integration & Compatibility

The CN1IPSBT-DC integrates upstream with any standard Ethernet network (data center switch, router, or managed switch) and downstream with any IEEE 802.3bt, 802.3at, or 802.3af compliant powered device. Auto-negotiation on both ports means no speed mismatches or link negotiation delays — plug and go. Its single-injector design is ideal for extending power to a single remote camera, access point, or control device over long cable runs, or for retrofitting legacy PoE infrastructure where a switch upgrade is not feasible. Dual-port architecture (Ethernet in, PSE out) requires a linear daisy-chain topology — it is not a multi-port injector and not suitable as a centralized PoE switch for multi-device sites.

What's in the Box

• 1x Comnet CN1IPSBT-DC PoE Injector
• 2x Five-foot 18/2 red/black power input cables (pre-terminated for DC input)
• DIN rail mounting brackets and hardware
• Wall mount brackets and hardware

Frequently Asked Questions

Q: Is the CN1IPSBT-DC NDAA Section 889 compliant?

A: Yes. The CN1IPSBT-DC carries NDAA and TAA approvals, confirming it meets federal procurement restrictions on telecommunications equipment sourcing. Refer to the manufacturer's compliance documentation for specific Section 889 certification scope.

Q: What is the warranty on the CN1IPSBT-DC?

A: Refer to your purchase documentation or contact the manufacturer directly for warranty terms. MTBF is rated at >100,000 hours, indicating expected service life exceeding 11 years of continuous operation.

Q: Can I use the CN1IPSBT-DC with older PoE devices that only support 802.3af (15.4W)?

A: Yes. The CN1IPSBT-DC is backward compatible with IEEE 802.3at and 802.3af standards. Older powered devices will negotiate down to their supported power class automatically — no manual configuration needed.

Q: Does the CN1IPSBT-DC require external power conditioning or UPS?

A: The CN1IPSBT-DC itself requires stable 52–56 VDC input. Redundant DC input ports allow dual power supplies for fault tolerance. Whether external UPS or power conditioning is needed depends on your site infrastructure and uptime requirements — the injector itself does not include integrated UPS.

Q: Can I mount the CN1IPSBT-DC outdoors?

A: The injector itself is rated for -40°C to +75°C operation and convection cooling but has no IP rating specified. It should be housed in a weatherproof cabinet, junction box, or enclosure to protect against rain, snow, and direct UV exposure. DIN rail mounting brackets allow installation inside standard outdoor electrical enclosures.

Q: What's the power consumption of the CN1IPSBT-DC when no device is powered?

A: The injector draws approximately 1 watt of power at idle (52–56 VDC input, no PoE load). This low standby draw is relevant for solar or battery-backed remote installations where every watt counts.

Ted Perry

The CN1IPSBT-DC fills a specific gap in industrial surveillance and remote infrastructure power delivery: when you need 90 watts of IEEE 802.3bt PoE in a single-port injector form factor for deployment in unheated sheds, roadside cabinets, or shipping docks where ambient temperature swings from -40°C winter to +75°C summer sun. I've deployed these units for utility SCADA cameras, transportation ITS kiosks, and remote warehouse access control systems where a traditional PoE switch retrofit wasn't an option, and the passive convection cooling — combined with the compact DIN rail footprint — makes cabinet integration straightforward without fans or climate control overhead.

Technical Highlights:

• 90W IEEE 802.3bt Type 4 delivery: The maximum defined power for a single PoE injector. This means motorized domes, PTZ systems with heater elements, or industrial PoE-fed control devices drawing 70–90W can run on a single cable pair without second-guessing power delivery or discovering mid-deployment that you're 5 watts over budget.
• 10G dual-port auto-negotiation: Both Ethernet and PSE ports support 10/100/1000/2.5/5/10GBASE-T with automatic detection. Deploy a 10G uplink to your aggregation switch, daisy-chain older 100BASE-T PoE devices downstream — speed is negotiated automatically. No manual port config, no link speed mismatches.
• Redundant 52–56 VDC DC input with automatic failover: Two screw-clamp power terminals accept dual feeds. If one path drops, the unit stays live on the backup. Eliminates single-point power failure risk in unattended remote sites where a service truck visit is hours away.
• Passive convection, -40°C to +75°C industrial rating: No fans, no moving parts, no maintenance burden. Tested industrial temperature span covers frozen dock loading areas and sun-baked roadside enclosures without requiring site climate control. Real-world advantage: you skip the HVAC retrofit and the recurring energy cost.

Deployment Considerations:

• Single-port, daisy-chain topology only: The CN1IPSBT-DC is not a multi-port PoE switch. It injects power into one downstream device over one cable run. If you need to power multiple cameras or access points at a single site, you'll need a centralized PoE switch or multiple injectors. This is not a limitation for point-to-point remote power extension, but it is a gotcha if someone assumes it can be a local PoE hub.
• Enclosure-required for outdoor mounting: The unit has no IP rating and must be housed in a weatherproof cabinet or junction box to survive rain, snow, or condensation. Factor cabinet cost and thermal design (air vents, drains) into your site budget. Convection cooling requires unobstructed airflow, so you can't stack it tightly with other equipment in a crowded enclosure.
• DC power sourcing is non-standard: Unlike plug-in PoE switches powered by AC wall outlets, the CN1IPSBT-DC requires stable 52–56 VDC input — typically a separate industrial power supply or redundant power conditioning module (Comnet offers the PS-MORD48240 as a matched option). This adds complexity and cost to the bill-of-materials if you don't already have 48VDC infrastructure on site.

The CN1IPSBT-DC is purpose-built for extended-reach single-device PoE power delivery in harsh remote environments — think roadside traffic cameras, utility substation automation, distributed warehouse access points, or shipping container yard surveillance where you're running long cable runs from a central power source to an isolated high-draw PoE device and environmental control is not available. It is not a general-purpose edge switch, and it does not replace a PoE+ switch for multi-device local aggregation.