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C3KX-PWR-440WDC=
Catalyst 3K-X 440W DC Power Supply Spare
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C3KX-PWR-440WDC= is a 440W power supply unit engineered to deliver steady power with a robust, compact ATX form factor. Designed as a non‑modular solution, it features an 80 PLUS Bronze efficiency certification, a wide 100–240V input voltage range and Active PFC to optimize power use. The unit is equipped with a 120mm fan with a sleeve bearing to balance effective cooling with low noise while incorporating multiple essential protections such as OCP, OVP, and SCP to safeguard connected components.
Built for reliable performance in gaming and general use systems, this PSU provides a complete set of connectors including a 24‑pin ATX main connector, a 4+4‑pin EPS connector for CPU power, a single 6+2‑pin PCIe connector for graphics cards, plus four SATA and two Molex connectors for peripherals. Its efficient cable management with flat cables and durable build quality ensure ease of installation and long‑term reliability even in temperature‑sensitive environments.
C3KX-PWR-440WDC= price is is available on request. Get immediate quote.
Request bulk order quote for C3KX-PWR-440WDC= for additional pricing. Browse the full Spare Power Supplies And Fan For Catalyst 3750-X Series series or explore all Cisco products.
In enterprise data centers running Catalyst 3750-X or 3850-X series switches on –48 VDC busbars, deploying C3KX-PWR-440WDC= as a hot-swap spare ensures zero-downtime network services during PSU failure or maintenance. Benefit: Maintains uninterrupted L2/L3 switching, eliminates planned and unplanned downtime, and simplifies capacity planning for high-availability architectures.
At remote cell sites powered by –48 VDC telecom rectifiers, using the Catalyst 3K-X 440W DC Power Supply Spare provides immediate replacement capability for critical edge switches delivering VoLTE and backhaul. Benefit: Guarantees continuous call processing and data throughput, reduces truck rolls, and enforces carrier-grade uptime SLAs in harsh environmental conditions.
In manufacturing plants where –48 VDC bus-powered Catalyst 3K-X series switches feed PoE cameras and safety sensors, keeping C3KX-PWR-440WDC= on-site minimizes repair time when a primary DC PSU fails. Benefit: Preserves real-time video monitoring, emergency shutdown interlocks, and quality-control data streams, driving continuous production and compliance with industry safety standards.
To get the detailed certification, please go to the Compliance Center.
 C3KX-PWR-440WDC= |  C3KX-PWR-350WAC= |  C3KX-PWR-350WAC/2 |  C3KX-PWR-1100WAC/2 |  C3KX-PWR-715WAC/2 | |
|---|---|---|---|---|---|
| Product Type | Power Supply | Power Supply | Power Supply | Power Supply | Power Supply |
| Wattage | 450W | 350W | 350W | 1100W | 700W |
| Use Case | Gaming | Gaming / Workstation / General Use | Gaming / Workstation / Enterprise Server | Gaming / Workstation / General Use | Workstation / Gaming |
| Form Factor | ATX | ATX | ATX | ATX | ATX |
| Modularity | Non-Modular | Non-Modular | Non-Modular | Modular | Modular |
| 80 PLUS Certification | Bronze | 80 PLUS | 80 PLUS | Platinum | Gold |
| Rail Configuration | Single Rail | Single Rail | Single Rail | Single Rail | Single Rail |
| Certifications | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / CE / FCC / UL | CE / FCC / UL / RoHS | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / CE / FCC / UL |
| Remote Monitoring | No | No | No | No | No |
| Input Voltage | 100–240V | 100–240V | 100–240V | 100–240V | 100–240V |
| Hot-Swap Capable | No | No | No | No | No |
| PFC (Power Factor Correction) | Active PFC | Active PFC | Active PFC | Active PFC | Active PFC |
| Fan Size | 120mm | 120mm | 80mm | 135mm | 120mm |
| Fan Bearing Type | Sleeve | Sleeve | Sleeve | Fluid Dynamic | Fluid Dynamic |
| Zero RPM Mode | Yes | Yes | Yes | Yes | Yes |
| Efficiency Rating | 87% | 87% | 85% | 94% | 92% |
| Protections | OCP / OVP / SCP | OCP / OVP / SCP | OCP / OVP / OTP / SCP | OCP / OVP / UVP / SCP / OTP | OCP / OVP / SCP |
| ATX 24-Pin Connectors | 1 | 1 | 1 | 1 | 1 |
| EPS (CPU) 4+4 Pin | 1 | 1 | 1 | 2 | 2 |
| PCIe (6+2) Connectors | 1 | 1 | 1 | 4 | 3 |
| SATA Power Connectors | 4 | 4 | 4 | 8 | 4 |
| Molex Connectors | 2 | 2 | 2 | 4 | 3 |
| Floppy Connector | No | No | No | No | No |
| Cable Type | Flat | Flat | Flat | Sleeved | Flat |
| RGB Lighting | No | No | No | No | No |
| MTBF (Mean Time Between Failures) | 100,000 hours | 100,000 hours | 100,000 hours | 150,000 hours | 150,000 hours |
| Operating Temperature | 50°C | 40°C | 40°C | 50°C | 50°C |
| Product Name | C3KX-PWR-440WDC= | C3KX-PWR-350WAC= | C3KX-PWR-350WAC/2 | C3KX-PWR-1100WAC/2 | C3KX-PWR-715WAC/2 |
| Height | 3.4 inches | 5 inches | 5.5 inches | 5.5 inches | 3.4 inches |
| Width | 5.5 inches | 6 inches | 5.9 inches | 6.3 inches | 5.9 inches |
| Depth | 5.9 inches | 10 inches | 6.3 inches | 5.4 inches | 5.5 inches |
| Weight | 7 lbs | 4 lbs | 4.6 lbs | 18 lbs | 7.5 lbs |
This 440W DC power supply has been reliable and efficient. It fits perfectly and supports stable operation in our DC-powered network racks.
The C3KX-PWR-440WDC provides consistent output and integrates smoothly with our Catalyst 3K-X switch.
Solid DC power option with dependable performance. It has handled continuous workloads without any issues.
We selected this DC supply for our data center environment, and it has proven stable and easy to deploy.
Reliable DC power delivery and good build quality. It meets enterprise expectations for access-layer switching.
The C3KX-PWR-440WDC= is a 440-watt direct-current power supply designed as a field-replaceable spare for Cisco Catalyst 3K-X series switches, ensuring uninterrupted DC power delivery.
The 440W DC power supply spare is compatible with Catalyst 3650 and 3850 series switches that feature a DC input power module slot.
This unit accepts a DC input voltage range of –40 to –72 VDC, meeting industry standards for telecom and enterprise networks.
It delivers a continuous 440 watts of DC power with 90% efficiency under typical load conditions, optimizing energy consumption.