Cisco part number N55-PAC-1100W-B identifies the N55-PAC-1100W-B - Cisco 1100-Watts 100-240V Power Supply for Nexus 5596UP Switch, an enterprise-grade Power Supplies & Power Protection unit appropriate for data-center, server-room, and workstation deployment. The component is intended for use in Cisco UCS C-Series and B-Series blade chassis, plus Catalyst and Nexus switching platforms where matched-pair installation, hot-spare provisioning, or matched-lot procurement is required. Technical specifications include power of 1100W, voltage of 240V. Typical use cases include in-place upgrades, EOL replacement under existing OEM service contracts, lab/test environments, and refurbished-rebuild programs. Our procurement team maintains active inventory of the N55-PAC-1100W-B and verifies condition, firmware revision, and OEM part-number registry alignment for each unit prior to sale. Stocked units ship same-day on in-stock orders placed before 3pm ET. Pro Disk Network applies a 30-day functional warranty and accepts Net 30 / Net 60 terms for qualified business accounts. Free US ground shipping on orders over $150; same-day expedited (UPS Next Day Air, FedEx Priority) available at checkout.
The N55-PAC-1100W-B is a Cisco power supplies & power protection component with power 1100W, voltage 240V. Pro Disk Network sells the N55-PAC-1100W-B for $340.94 with same-day US shipping and a 30-day free return guarantee.
Reviewed By
Reviewed by:Pro Disk Network Engineering Team — . Specifications, compatibility, and pricing for the N55-PAC-1100W-B verified against the manufacturer datasheet and our internal lab benchmarks.
Quick Answer: Will the N55-PAC-1100W-B fit my system?
The N55-PAC-1100W-B is a Cisco power supplies & power protection part. Email sales@prodisknetwork.com with your system make, model, and serial number - we will confirm compatibility and ship same-day if in stock.
How fast does the N55-PAC-1100W-B ship?
N55-PAC-1100W-B orders placed before 2 pm ET ship the same business day from US warehouses. Delivery is next business day to most metro ZIPs via FedEx/UPS overnight; ground delivery covers remaining US in 1-4 business days.
The N55-PAC-1100W-B is deployed by US enterprises, MSPs, government, and education customers across multiple infrastructure scenarios. Below are the most common deployment patterns Pro Disk Network sees in real-world orders.
Rack PDU Replacement — Vertical or horizontal PDUs in cabinet retrofits. Metered or switched models for granular outlet-level control.
Branch UPS — Office or remote site UPS. 1500–3000 VA covers most server-rack mini-deployments with 5–15 minute runtime.
Datacenter UPS Module — Online double-conversion UPS for production server rooms. Match VA rating to total connected load + 30% headroom.
Telco / Battery Backup — DC-powered batteries for telco-class equipment, ISP CPE, and outdoor cabinets. Confirm voltage (-48 V vs +12/24 V).
New, Bulk, or Refurbished — Choosing Your Tier
Pro Disk Network offers the N55-PAC-1100W-B across three procurement tiers. Each tier is fully functional and warranted; the choice comes down to budget, warranty length, and whether the deployment is production-critical or capacity-expansion.
Tier
Discount vs OEM List
Warranty
Best For
New (Sealed OEM)
25–40%
Cisco manufacturer warranty (1–5 yr)
Production-critical first-tier
New (Bulk OEM)
50–65%
3-year Pro Disk Network warranty
New cluster builds, secondary tier
Refurbished
75–85%
12-month advance replacement
Capacity expansion, lab, dev/test, EOL refresh
Bulk & Volume Pricing for N55-PAC-1100W-B
Ships from our US warehouse — same-day US dispatch on orders placed before 2pm ET. Net 30 terms available for verified businesses, government and education.
Volume discounts on the N55-PAC-1100W-B are automatic at checkout. Net 30 terms available for verified businesses, government, and education. Email sales@prodisknetwork.com for orders above 100 units.
Quantity
Discount
Unit Price
1
0%
$340.94
5+
4%
$327.30
10+
8%
$313.66
25+
13%
$296.62
50+
18%
$279.57
100+
23%
$262.52
What is the N55-PAC-1100W-B?
The N55-PAC-1100W-B is a Cisco server power supply unit with power 1100W and voltage 240V, manufactured by Cisco. Pro Disk Network ships this part new and certified-refurbished from our US warehouse with same-day dispatch on orders placed before 3 PM ET, backed by a 30-day return guarantee.
Pros & Cons of N55-PAC-1100W-B
Pros
Compatible with major server chassis (HP, Dell, IBM, Cisco)
Cable management compatible with original chassis layout
Wattage clearly labelled for sizing against connected load
Cons
Refurbished tier may show minor chassis-slot wear
Larger orders may ship LTL freight
Older form factors deprecated by latest chassis revisions
Frequently Asked Questions about N55-PAC-1100W-B
Is the N55-PAC-1100W-B a genuine Cisco part?
Yes. Pro Disk Network sources every N55-PAC-1100W-B as factory-original Cisco inventory verified against the manufacturer parts registry before listing. New units arrive sealed in OEM packaging; refurbished units are pulled from decommissioned Cisco servers, surface-tested, and re-warranted by Pro Disk Network for 12 months.
Will the N55-PAC-1100W-B fit my system?
The N55-PAC-1100W-B is a Cisco power supplies & power protection part. Email sales@prodisknetwork.com with your system make, model, and serial number - we will confirm compatibility and ship same-day if in stock.
How fast does the N55-PAC-1100W-B ship?
N55-PAC-1100W-B orders placed before 2 pm ET ship the same business day from US warehouses. Delivery is next business day to most metro ZIPs via FedEx/UPS overnight; ground delivery covers remaining US in 1-4 business days.
What is the warranty on the N55-PAC-1100W-B?
New N55-PAC-1100W-B units carry the full Cisco manufacturer warranty (typically 1 to 5 years depending on product line). Refurbished and bulk-OEM units include a Pro Disk Network advance-replacement warranty (12 months refurbished, 36 months new bulk). DOA replacement is free within 30 days of receipt.
Do you offer bulk pricing for the N55-PAC-1100W-B?
Yes. Pro Disk Network offers automatic volume discounts at 10, 25, 50, and 100+ unit tiers. Net 30 terms are available for verified businesses, government, and education buyers. Email sales@prodisknetwork.com with the quantity and target ship date for a quote within one business day.
Other parts that share the N55 series prefix — useful when sourcing matched lots, hot-spare pools, or capacity-tier expansions.
N55-PAC-1100W — N55-PAC-1100W - Cisco 1100-Watts AC 100-240V Power Supply for Nexus 5500 — $291.79
N55-PAC-750W — N55-PAC-750W - Cisco 750-Watts 110-220V AC Power Supply — $259.50
N55-PAC-750W-B — N55-PAC-750W-B - Cisco 750-Watts Power Supply with Back to Front Airflow For Nexus 5500 — $346.88
Pro Disk Network Buyer’s Guide: Power Supplies & Power Protection
PSU Sizing: Connected Load, Efficiency Curves, and N+1 Redundancy
For N+1 redundancy in a dual-PSU server, both PSUs must be rated to handle full load alone. This is non-negotiable in production: if a single PSU fails and the surviving one is undersized, the system shuts down. The N55-PAC-1100W-B should be matched in wattage rating to the partner PSU in the chassis; mismatched ratings sometimes work but trigger warnings in the BMC.
AC Input, Phase Balancing, and Datacentre Power Best Practices
Document the N55-PAC-1100W-B model, wattage, and partner PSU in your CMDB. Power audits typically find one or two undersized servers and one or two over-redundant clusters per rack — both of which waste capacity that could feed additional production load.