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MA-PWR-640WAC
Cisco MA-PWR-640WAC 640W AC Hot-Swap Power Supply for Meraki...
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MA-PWR-640WAC is a 640W AC internal power supply for Meraki MS250 and MS350 stackable access switches. It is hot-swappable in dual power bays and supports redundant power on MS250-24P, MS250-48LP, MS350-24P and MS350-48LP switches. Those PoE models carry a 370W PoE+ budget. The Cisco Meraki MS250 power supply fit is model-specific, so match the exact rear bay label before the PO. MS250 and MS350 switches ship with one power supply, and a second matching unit fills the redundant bay. MS250-24P, MS250-48LP, MS350-24P and MS350-48LP take this 640W supply. MS250-48FP, MS350-24X and MS350-48FP use MA-PWR-1025WAC for 740W PoE builds. Hot insertion and removal make the second bay a redundancy add, not a PoE budget increase.
MA-PWR-640WAC price is $323.40, a 22.2% saving from the Cisco list price of $415.80. MA-PWR-640WAC is in stock and available for free next-day delivery. (terms applied)
Request bulk order quote for MA-PWR-640WAC for additional pricing. Browse the full Cisco Meraki Power Supplies series or explore all Cisco products.
100-240V AC, 47-63 Hz input lets the switch bay use standard AC branch power across the MS250 and MS350 host set. The 640W AC bay requires a C15 power cable, so match the site cord to the rack PDU before the PO. MA-PWR-640WAC runs in a dual hot-swap power supply layout in the supported hosts. Active power supplies report green at the rear bay. -5°C to 50°C operating temperature applies across MS250-24P, MS250-48LP, MS350-24P and MS350-48LP host models. Each MS250 and MS350 chassis uses a 1U rack-mount form factor, so rear clearance for the power bay and cords matters. Regional power cords use MA-PWR-CORD-US, MA-PWR-CORD-EU, MA-PWR-CORD-UK and MA-PWR-CORD-AU forms.
Order MA-PWR-640WAC as new sealed or certified refurbished for an MS250-24P, MS250-48LP, MS350-24P or MS350-48LP bay. Certified refurbished units are inspected and bench-tested in a compatible host or on a load tester, with hot insertion and removal verified in a live host. Output held at rated voltage under load and status LEDs report normal. New units carry up to a 3-year extended warranty; certified refurbished units carry up to 1 year, and 30-day returns apply. UK, EU, US and MEA stock supports RMA with advance replacement; PO accepted and Net-30 for government.
| Key Specs | Key Spec Values |
|---|---|
Rated Output | 640W |
Input | AC, 100-240V, 47-63 Hz |
Fits | MS250 and MS350 |
Available PoE | MS250-24P: 370W |
Hot-Swap | Yes, dual redundant bays |
Lifecycle Status | Sales end 29 October 2026 |
Your MS250 or MS350 PoE access switches are past end of sale and need spare power coverage through the remaining support window. MA-PWR-640WAC ends Cisco sales on October 29, 2026, so specify condition, C15 cord plan and host model before the PO.
Your switch has one active 640W supply and an empty second bay. Add a matching MA-PWR-640WAC to an MS250-24P, MS250-48LP, MS350-24P or MS350-48LP for redundant power, then match the power cord to the rack PDU.
Your 24-port or 48-port PoE+ access layer needs 370W PoE+ per switch and dual AC power bays. Use MA-PWR-640WAC only on the P and LP models, and move FP or multigigabit 740W builds to MA-PWR-1025WAC.
MS250 data-only switches
MA-PWR-640WAC does not fit MS250-24 or MS250-48 switches; those data-only models take MA-PWR-250WAC in the same modular bay.
740W PoE switch models
MS250-48FP, MS350-24X and MS350-48FP require a 1025W power supply for their 740W PoE designs; order MA-PWR-1025WAC instead.
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MA-PWR-640WAC is the Meraki 640W AC power supply for selected MS250 and MS350 switches. The PID names a 640W AC internal module, not an external adapter. Use it for MS250-24P, MS250-48LP, MS350-24P and MS350-48LP power bays. It supports redundant dual-bay operation.
MA-PWR-640WAC fits MS250-24P, MS250-48LP, MS350-24P and MS350-48LP switches. MS250-24 and MS250-48 are data-only exceptions that take MA-PWR-250WAC. MS250-48FP, MS350-24X and MS350-48FP are 740W PoE exceptions that take MA-PWR-1025WAC. Before the PO, match the model on the chassis label.
A Meraki MS250 switch uses MA-PWR-250WAC, MA-PWR-640WAC or MA-PWR-1025WAC by model. MS250-24 and MS250-48 use 250W. MS250-24P and MS250-48LP use 640W. MS250-48FP uses 1025W. The P and LP models provide 370W PoE+. The FP model provides 740W PoE+.
MA-PWR-640WAC is rated at 640W with AC input. MS250 power bays use 100-240V AC at 47-63 Hz, and 640WAC bays require a C15 power cable. The compatible hosts use 1U rack chassis, hot-swap dual power bays and -5°C to 50°C rack temperature planning.
Yes, MA-PWR-640WAC is hot-swappable in compatible Meraki MS250 and MS350 switches. The supported host models have dual power supply bays for redundant operation. A second matching 640W supply fills the redundant bay on MS250-24P, MS250-48LP, MS350-24P and MS350-48LP. Use matched wattage in both bays.
MA-PWR-640WAC supports 370W PoE+ on MS250-24P, MS250-48LP, MS350-24P and MS350-48LP switches. The second 640W supply is for redundancy on these hosts. 740W PoE builds use 1025W power supply models instead of the 640W module. Match the chassis model first.
MA-PWR-640WAC needs a C15 power cable in MS250 hosts. Regional cord ordering forms for Meraki MS switches include MA-PWR-CORD-US, MA-PWR-CORD-EU, MA-PWR-CORD-UK and MA-PWR-CORD-AU. Power cords are ordered separately. Match the cord country and the rack PDU before the PO.
MA-PWR-1025WAC supports the 740W PoE switch models, while MA-PWR-640WAC fits the 370W PoE P and LP models. Choose 640W for MS250-24P, MS250-48LP, MS350-24P and MS350-48LP. Choose 1025W for MS250-48FP, MS350-24X and MS350-48FP. The bay family is the same modular MS family.
MA-PWR-640WAC fits PoE MS250 and MS350 models with 370W PoE+, while MA-PWR-250WAC fits data-only MS250, MS350, MS410 and MS425 models. Choose 640W for PoE P or LP hosts. Choose 250W for non-PoE MS250-24, MS250-48, MS350-24 or MS350-48 hosts.
Cisco ends sales of MA-PWR-640WAC on October 29, 2026. Cisco service ends October 31, 2031. The MS250 Series, MS350-24P-HW and MS350-48LP-HW are past end of sale and reach end of support on August 8, 2030.
ORM offers MA-PWR-640WAC new sealed or certified refurbished. New units carry up to a 3-year extended warranty, and certified refurbished units carry up to 1 year. Certified refurbished units are inspected and bench-tested in a compatible host or on a load tester. Returns are 30 days; terms apply.
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