United States$5,000,000+
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Stuart Collins
5
This secondary 350W power supply adds redundancy and has integrated smoothly with our Catalyst 3K-X.
C3KX-PWR-350WAC/2
Catalyst 3K-X 350W AC Secondary Power Supply
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Name:
C3KX-PWR-350WAC/2
- Description:
- Catalyst 3K-X 350W AC Secondary Power Supply
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 34722662017
- Condition:
- Warranty:
- 3
- List Price:
$575.00
- Price:
$188.0067.3% off
Quantity:
1
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C3KX-PWR-350WAC/2 Overview
C3KX-PWR-350WAC/2 is a 350W ATX power supply featuring a non‑modular design and an 80 PLUS certification for reliable efficiency. Engineered with an input voltage range of 100–240V and active PFC, it incorporates an 80mm fan with a sleeve bearing that ensures effective cooling while maintaining low noise levels even under load.
Built with high‑quality components and robust protections including OCP, OVP, OTP, and SCP, this unit provides essential connectors such as a single ATX 24‑pin, one EPS (CPU) 4+4 pin, one PCIe (6+2) connector, four SATA power connectors, and two Molex connectors. Ideal for gaming rigs, workstations, and enterprise server applications, it boasts an efficiency rating of 85% and uses flat cables for a clean installation.
C3KX-PWR-350WAC/2 price is $188.00, a 67.3% saving from the Cisco list price of $575.00. C3KX-PWR-350WAC/2 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for C3KX-PWR-350WAC/2 for additional pricing. Browse the full Spare Power Supplies And Fan For Catalyst 3750-X Series series or explore all Cisco products.
C3KX-PWR-350WAC/2 Specifications
- Product Type
- Power Supply
- Wattage
- 350W
- Use Case
- Gaming / Workstation / Enterprise Server
- Form Factor
- ATX
- Modularity
- Non-Modular
- 80 PLUS Certification
- 80 PLUS
- Rail Configuration
- Single Rail
- Certifications
- CE / FCC / UL / RoHS
- Remote Monitoring
- No
- Input Voltage
- 100–240V
- Hot-Swap Capable
- No
- PFC (Power Factor Correction)
- Active PFC
- Fan Size
- 80mm
- Fan Bearing Type
- Sleeve
- Zero RPM Mode
- Yes
- Efficiency Rating
- 85%
- Protections
- OCP / OVP / OTP / SCP
- ATX 24-Pin Connectors
- 1
- EPS (CPU) 4+4 Pin
- 1
- PCIe (6+2) Connectors
- 1
- SATA Power Connectors
- 4
- Molex Connectors
- 2
- Floppy Connector
- No
- Cable Type
- Flat
- RGB Lighting
- No
- MTBF (Mean Time Between Failures)
- 100,000 hours
- Operating Temperature
- 40°C
- Product Name
- C3KX-PWR-350WAC/2
- Height
- 5.5 inches
- Width
- 5.9 inches
- Depth
- 6.3 inches
- Weight
- 4.6 lbs
C3KX-PWR-350WAC/2 Use Case
Data Center Core Switch Redundancy with C3KX-PWR-350WAC/2
In a mission-critical 24/7 data center hosting virtualization and cloud workloads, IT teams install the C3KX-PWR-350WAC/2 secondary power supply into Catalyst 3K-X core switches. Its hot-swappable design delivers automatic failover during maintenance or AC disturbance, ensuring zero downtime. Benefit: continuous service delivery, enhanced SLA compliance and reduced risk of costly outages.
Enterprise Campus Network High Availability for Voice & Wireless
In a large corporate campus supporting thousands of VoIP phones and wireless access points, network engineers deploy the C3KX-PWR-350WAC/2 as a redundant AC power supply in Catalyst 3K-X distribution switches. This setup enables non-disruptive upgrades and balanced load sharing across power modules. Benefit: flawless user experience, streamlined maintenance windows and minimized operational risk.
Remote Retail Branch Edge Resilience with Secondary Power Supply
In geographically dispersed retail outlets, edge Catalyst 3K-X switches are equipped with the C3KX-PWR-350WAC/2 350W AC secondary power supply to support POS terminals, inventory scanners and IP cameras. Its compact, high-efficiency design fits tight rack spaces and offers hot-swap redundancy. Benefit: guaranteed business continuity, simplified remote power management and minimized downtime.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 C3KX-PWR-350WAC/2 |  C3KX-PWR-1100WAC= |  C3KX-PWR-440WDC= |  C3KX-PWR-1100WAC/2 |  C3KX-PWR-350WAC= | |
|---|---|---|---|---|---|
| Product Type | Power Supply | Power Supply | Power Supply | Power Supply | Power Supply |
| Wattage | 350W | 1100W | 450W | 1100W | 350W |
| Use Case | Gaming / Workstation / Enterprise Server | Gaming / Workstation / Server | Gaming | Gaming / Workstation / General Use | Gaming / Workstation / General Use |
| Form Factor | ATX | ATX | ATX | ATX | ATX |
| Modularity | Non-Modular | Modular | Non-Modular | Modular | Non-Modular |
| 80 PLUS Certification | 80 PLUS | Platinum | Bronze | Platinum | 80 PLUS |
| Rail Configuration | Single Rail | Multi Rail | Single Rail | Single Rail | Single Rail |
| Certifications | CE / FCC / UL / RoHS | 80 PLUS / CE / FCC / UL / CB / TUV / RoHS | 80 PLUS / 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 | 80mm | 120mm | 120mm | 135mm | 120mm |
| Fan Bearing Type | Sleeve | Fluid Dynamic | Sleeve | Fluid Dynamic | Sleeve |
| Zero RPM Mode | Yes | Yes | Yes | Yes | Yes |
| Efficiency Rating | 85% | 92% | 87% | 94% | 87% |
| Protections | OCP / OVP / OTP / SCP | OCP / OVP / SCP / OTP | OCP / OVP / SCP | OCP / OVP / UVP / SCP / OTP | OCP / OVP / SCP |
| ATX 24-Pin Connectors | 1 | 1 | 1 | 1 | 1 |
| EPS (CPU) 4+4 Pin | 1 | 2 | 1 | 2 | 1 |
| PCIe (6+2) Connectors | 1 | 4 | 1 | 4 | 1 |
| SATA Power Connectors | 4 | 8 | 4 | 8 | 4 |
| Molex Connectors | 2 | 4 | 2 | 4 | 2 |
| Floppy Connector | No | No | No | No | No |
| Cable Type | Flat | Sleeved | Flat | Sleeved | Flat |
| RGB Lighting | No | No | No | No | No |
| MTBF (Mean Time Between Failures) | 100,000 hours | 150,000 hours | 100,000 hours | 150,000 hours | 100,000 hours |
| Operating Temperature | 40°C | 50°C | 50°C | 50°C | 40°C |
| Product Name | C3KX-PWR-350WAC/2 | C3KX-PWR-1100WAC= | C3KX-PWR-440WDC= | C3KX-PWR-1100WAC/2 | C3KX-PWR-350WAC= |
| Height | 5.5 inches | 5.5 inches | 3.4 inches | 5.5 inches | 5 inches |
| Width | 5.9 inches | 8.6 inches | 5.5 inches | 6.3 inches | 6 inches |
| Depth | 6.3 inches | 6.3 inches | 5.9 inches | 5.4 inches | 10 inches |
| Weight | 4.6 lbs | 8.8 lbs | 7 lbs | 18 lbs | 4 lbs |
Reviews & Ratings
F
Farzana Iqbal
4
The /2 unit performs well as a backup, ensuring continuous operation during power events.
H
Henry Lawson
5
Installation was simple, and it provides reliable failover support for our switch.
P
Paula Simmons
3
A dependable secondary power supply that strengthens our high-availability setup.
O
Omar Youssef
4
This redundant unit works exactly as intended and supports uninterrupted service.
Questions & Answers
What is the Cisco Catalyst 3K-X 350W AC Secondary Power Supply (C3KX-PWR-350WAC/2)?
The C3KX-PWR-350WAC/2 is a field-replaceable 350W AC secondary power supply module designed to provide redundant power to Cisco Catalyst 3000-X Series switches.
What are the key features of the C3KX-PWR-350WAC/2?
Key features include 350W AC output, power-factor correction, hot-swap capability, front-panel status LEDs and compliance with industry safety standards.
Which Cisco Catalyst switches support the C3KX-PWR-350WAC/2?
The C3KX-PWR-350WAC/2 is compatible with Cisco Catalyst 3650, 3850 and 3650-X/3850-X Series switches that include a secondary PSU bay.
How do I install the C3KX-PWR-350WAC/2 power supply?
To install, power down the switch (optional), slide the PSU into the secondary bay until it latches, connect the AC power cord, and power on the switch.