The PWR-M120-AC-R is a Juniper power supplies & power protection component. Pro Disk Network sells the PWR-M120-AC-R for $533.20 with same-day US shipping and a 30-day free return guarantee.
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Reviewed by:Pro Disk Network Engineering Team — . Specifications, compatibility, and pricing for the PWR-M120-AC-R verified against the manufacturer datasheet and our internal lab benchmarks.
Trust Signals
Florida-Registered LLC — 7345 W Sand Lake Rd, Orlando FL 32819
Same-Day US Shipping — orders before 3pm ET ship today via FedEx/UPS
30-Day Free Returns — pre-paid label included on all US orders
Net 30 Available — for verified business buyers
2,000+ B2B Customers — MSPs, government, education, enterprise IT
Quick Answer: Will the PWR-M120-AC-R fit my system?
The PWR-M120-AC-R is a Juniper 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 PWR-M120-AC-R ship?
Pro Disk Network dispatches the PWR-M120-AC-R same-day on orders confirmed before 2 pm ET. Multi-pallet projects requiring crating ship within 2 business days. International shipping (Canada, Mexico, EU, APAC) takes 3-7 business days via DHL Express or FedEx International Priority.
The PWR-M120-AC-R 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.
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 PWR-M120-AC-R 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%
Juniper 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 PWR-M120-AC-R
Ships from our Orlando, FL 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 PWR-M120-AC-R 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%
$533.20
5+
4%
$511.87
10+
8%
$490.54
25+
13%
$463.88
50+
18%
$437.22
100+
23%
$410.56
What is the PWR-M120-AC-R?
The PWR-M120-AC-R is a Juniper server power supply unit, manufactured by Juniper. 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-M120-AC-R
Pros
Lower cost than OEM channel pricing
Matched-pair option for dual-PSU redundancy
3-year typical lifecycle remaining on refurbished tier
Cons
Server-grade PSU — not for desktop or workstation use
Higher in-rush current — confirm UPS sizing
Single-PSU purchase misses matched-pair discount
Frequently Asked Questions about PWR-M120-AC-R
Is the PWR-M120-AC-R a genuine Juniper part?
Yes. Pro Disk Network sources every PWR-M120-AC-R as factory-original Juniper inventory verified against the manufacturer parts registry before listing. New units arrive sealed in OEM packaging; refurbished units are pulled from decommissioned Juniper servers, surface-tested, and re-warranted by Pro Disk Network for 12 months.
Will the PWR-M120-AC-R fit my system?
The PWR-M120-AC-R is a Juniper 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 PWR-M120-AC-R ship?
Pro Disk Network dispatches the PWR-M120-AC-R same-day on orders confirmed before 2 pm ET. Multi-pallet projects requiring crating ship within 2 business days. International shipping (Canada, Mexico, EU, APAC) takes 3-7 business days via DHL Express or FedEx International Priority.
What is the warranty on the PWR-M120-AC-R?
New PWR-M120-AC-R units carry the full Juniper 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 PWR-M120-AC-R?
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 PWR series prefix — useful when sourcing matched lots, hot-spare pools, or capacity-tier expansions.
PWR-M10I-M7I-AC-BB — PWR-M10I-M7I-AC-BB - Juniper AC Power Supply for M10I / M — $338.71
PWR-M10I-M7I-AC-R — PWR-M10I-M7I-AC-R - Juniper AC Power Supply for M10I / M7 — $372.26
PWR-M10I-M7I-AC-S — PWR-M10I-M7I-AC-S - Juniper AC Power Supply — $491.64
PWR-M10I-M7I-DC-S — PWR-M10I-M7I-DC-S - Juniper 293-Watts DC Power Supply for M10I / M7I — $250.53
Pro Disk Network Buyer’s Guide: Power Supplies & Power Protection
PSU Sizing: Connected Load, Efficiency Curves, and N+1 Redundancy
For racks with shared PDUs, plan PDU capacity at 80% of breaker rating, not 100%. A 30A PDU should carry no more than 24A sustained. Distribute high-power chassis across multiple PDUs in dual-feed racks so a single PDU failure does not exceed the survivor's headroom.
AC Input, Phase Balancing, and Datacentre Power Best Practices
The PWR-M120-AC-R accepts a defined AC voltage range, typically 100-240V or 200-240V for high-output server PSUs. Higher voltage = higher efficiency: a server PSU at 240V input runs 1-2% more efficient than the same PSU at 120V. In datacentres with 208V three-phase, balance loads across the three phases to avoid neutral saturation and reduce harmonic distortion on the upstream UPS.