The PWR-3845-DC-RF is a Cisco power supplies component. Pricing on the PWR-3845-DC-RF is quote-based — email sales@prodisknetwork.com or use our live chat for a quote within one business day.
Reviewed By
Reviewed by:Pro Disk Network Engineering Team — . Specifications, compatibility, and pricing for the PWR-3845-DC-RF are shown on this page.
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US-based LLC — 7345 W Sand Lake Rd, STE 210, Office 3208, Orlando, FL 32819
Same-Day US Shipping — orders before 3pm ET ship today via UPS
30-Day Returns — pre-paid label on DOA and defective items
Quick Answer: Will the PWR-3845-DC-RF fit my system?
The PWR-3845-DC-RF is a Cisco power supplies 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 PWR-3845-DC-RF ship?
If in stock, the PWR-3845-DC-RF ships same business day on US orders placed before 3 pm ET. Most US ZIP codes receive next-business-day or 2-day delivery via FedEx/UPS Ground or Express. Bulk and project orders shipping in pallets are typically dispatched within 24-48 hours.
The PWR-3845-DC-RF 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.
Redundant Server Power — N+1 PSU configurations in dual-feed racks — order matched units in pairs to maintain hot-spare semantics.
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.
What is the PWR-3845-DC-RF?
The PWR-3845-DC-RF is a Cisco server power supply unit, 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 PWR-3845-DC-RF
Pros
Wattage clearly labelled for sizing against connected load
Cons
Server-grade PSU — not for desktop or workstation use
Higher in-rush current — confirm UPS sizing
Frequently Asked Questions about PWR-3845-DC-RF
Is the PWR-3845-DC-RF a genuine Cisco part?
Yes. Pro Disk Network sources every PWR-3845-DC-RF as factory-original Cisco inventory. 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 90 days.
Will the PWR-3845-DC-RF fit my system?
The PWR-3845-DC-RF is a Cisco power supplies 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 PWR-3845-DC-RF ship?
If in stock, the PWR-3845-DC-RF ships same business day on US orders placed before 3 pm ET. Most US ZIP codes receive next-business-day or 2-day delivery via FedEx/UPS Ground or Express. Bulk and project orders shipping in pallets are typically dispatched within 24-48 hours.
What is the warranty on the PWR-3845-DC-RF?
New PWR-3845-DC-RF 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 (90 days refurbished). DOA replacement is free within 30 days of receipt.
Do you offer bulk pricing for the PWR-3845-DC-RF?
Email sales@prodisknetwork.com with the quantity and target ship date for a quote within one business day.
Other parts that share the PWR series prefix — useful when sourcing matched lots, hot-spare pools, or capacity-tier expansions.
PWR-3825-AC — PWR-3825-AC - Cisco 210-Watts AC/IP Power Supply For 3825 Router — $200.92
PWR-3825-AC-IP — PWR-3825-AC-IP - Cisco AC IP Power Supply 3825 Series — $200.44
PWR-3845-AC — PWR-3845-AC - Cisco 300-Watts AC Power Supply For 3845 Router — $195.17
PWR-3845-AC-IP — Cisco PWR-3845-AC-IP Inline AC IP Power Supply For Cisco 3845 Routers Spare — $622.80
Pro Disk Network Buyer’s Guide: Power Supplies
PSU Sizing: Connected Load, Efficiency Curves, and N+1 Redundancy
Sizing the PWR-3845-DC-RF or its replacement starts with calculating connected load. Add up the nameplate wattage of CPUs, GPUs, drives, fans, and add-in cards under maximum sustained load. Idle is irrelevant; peak sustained is what matters. Size the PSU at 60-80% of nameplate load for best efficiency — modern Platinum/Titanium PSUs hit peak efficiency at 50% load and degrade above 80%.
AC Input, Phase Balancing, and Datacentre Power Best Practices
For UPS-fed servers, confirm the UPS output waveform is compatible with the PWR-3845-DC-RF's input. Modern PSUs accept both sine-wave and high-quality simulated sine-wave inputs, but older or stepped-approximation UPS outputs can cause buzzing or premature PSU failure. When in doubt, use double-conversion online UPS units.