Schneider Electric APC Metered-by-Outlet Rack PDU, AP88xx Rack PDU 2G part numbers

A tier name spanning dozens of part numbers, with firmware now behind a paid subscription

Schneider Electric APC Metered-by-Outlet Rack PDU, AP88xx Rack PDU 2G part numbers is one of 5 power distribution units tracked in the SecondWatt catalogue, each with specifications, lead times and indicative secondary-market pricing.

Schneider Electric APC Metered-by-Outlet dossier: a tier spanning many AP88xx part numbers, metering accuracy, firmware subscription risk and pricing.

Metered-by-Outlet is a tier rather than a model. It spans a long list of AP88xx part numbers in Schneider's Rack PDU 2G generation, including AP8858, AP8481, AP8632 and AP8659, each with different voltage, current, inlet and outlet configurations. Anyone cataloguing it as a single product is describing a family of dozens. Three naming layers coexist in current literature and a buyer needs to keep them apart: the Rack PDU 2G generation carrying AP7xxx and AP8xxx numbers, which remains current; the newer NetShelter Rack PDU Advanced range carrying APDUxxxxx numbers; and the tier labels themselves. The generations differ materially on measurement. The AP8858 metered unit publishes 3% accuracy for amps, volts, kilowatts and kilowatt-hours, while the NetShelter Advanced 9000 and 10000 series publish 1%, which is a three-fold improvement inside one manufacturer's catalogue. The decisive fact for a used buyer is licensing. Schneider moved network management card firmware to a subscription model in the third quarter of 2023, and the AP8858 product page states the unit ships with a one-year Secure Network Management Card subscription included. A used PDU whose subscription has lapsed may not be able to take a firmware update, and CVE-2021-22825 names AP7xxx and AP8xxx rack PDUs directly on NMC2 firmware v6.9.6 and prior and NMC3 v1.1.0.3 and prior. Buying the hardware and inheriting unpatchable firmware is the specific risk here.

Why it matters

This line is where the category's firmware problem becomes a purchase decision rather than a footnote. A refurbished AP7911 at 17.69 dollars per outlet against a new AP8441 at 85.96 is a five-fold saving, but only if the buyer can still patch it. The subscription question has to be settled before the hardware discount means anything.

Who buys it

Enterprises and colocation providers with a large installed APC base, buying like-for-like to keep one management platform. This is also the deepest refurbished bench in the category: one specialist runs segmented collection pages by voltage and amperage class and states a 365-day warranty, which makes APC the practical entry point for anyone testing refurbished rack PDUs at all.

Role in the data center

Cabinet power distribution and per-outlet measurement across enterprise and colocation halls, with the metered-by-outlet tier supplying the data that feeds capacity planning and customer billing.

Key specifications

Technical summary

Tier structure: Basic, Metered, Metered by Outlet, Switched, and Metered by Outlet with Switching Generations: Rack PDU 2G on AP7xxx and AP8xxx numbers, plus NetShelter Rack PDU Advanced on APDUxxxxx AP8858: 208 or 230 V single phase, 16 A, C20 inlet, 18 x C13 and 2 x C19 outlets AP8481: 230 V single phase, IEC 60309 inlet, 21 x C13 and 3 x C19 outlets Metering accuracy: 3% on the AP8858 metered tier; 1% on NetShelter Advanced 9000 and 10000 NetShelter Advanced input: 16 A to 63 A at 208 V and 400 to 415 V, single and three phase NetShelter Advanced outlets: C13 and C15 plus a four-in-one acting as C13, C15, C19 or C21 Network: web management, SNMP and Redfish, with a 1-year network card subscription included Environmental sensors: up to 8 external ports on the NetShelter Advanced range Warranty: 3 years on the 10000 and 9000 series, 2 on the 8000, 1-year extension available

Configurations and options

A 0U vertical unit with C13 and C19 outlets on a C20 or IEC 60309 inlet is the common data hall build. The four-in-one outlet on the NetShelter Advanced range is the notable configuration change, because one outlet accepts C13, C15, C19 or C21 plugs and reduces the number of distinct SKUs a site has to stock.

Compatibility and dependencies

Firmware entitlement is the binding dependency: confirm whether the network management card subscription transfers with the hardware, because a lapsed subscription can block the patch that closes a published vulnerability. Inlet types differ across the family between C20 and IEC 60309, so a part number substitution is also a whip change.

Pricing and availability

Published price range: $283 refurbished to $2,897 new per unit. Trend: flat No published price series exists, but this line has the most complete condition ladder in the category. New units run 85.96 to 120.71 dollars per outlet across four distributors, a refurbished AP7911 with a stated 365-day warranty runs 17.69, and unwarranted refurbished AP7957NA, AP7968 and AP7998 units run 3.54 to 4.54. The same SKU also shows real distributor dispersion: an AP8632 was listed at 2,896.99 and 2,155.98 at two sellers on the same day, a 34% spread. Lead time, new: Distributor stock. Lead time, used or refurbished: Days to 2 weeks from refurbished IT specialists.

Lifecycle and maintenance

A rack PDU has almost no wearing parts in the power path, so service life is set by firmware support rather than hardware fatigue. Warranty terms cluster at two to five years: Raritan two extendable to five, Eaton three on the G4 against two on the G3, CyberPower three, and Vertiv five if registered within 120 days. What actually ends a unit's life is the controller: when a manufacturer stops issuing firmware, a networked PDU becomes an unpatchable device on a production network. That is why controller replaceability matters more than any mechanical specification here, and why Eaton publishing an upgrade path from its G3 network card to the G4 module, and Raritan shipping a hot-swappable controller, are the most commercially significant features in this category.

Common failure points

• Firmware obsolescence — An unsupported controller cannot be patched, leaving published vulnerabilities open on a networked device
• Firmware licensing — Network management card firmware sits behind a paid subscription at one major manufacturer since Q3 2023
• Controller or network card failure — The PDU keeps distributing power but disappears from the management system
• Outlet retention wear — Contacts lose retention force and a cord drops out under vibration or during cable work
• Breaker nuisance tripping — A branch breaker trips below nameplate under normal load
• Residual configuration — A used unit arrives carrying the previous owner's accounts, directory settings and network configuration

Inspection checklist

Metering tier — establish which of the 5 rungs the unit actually occupies, because basic, metered inlet, metered by outlet, switched and switched metered by outlet are different products Metering accuracy — published accuracy spans 0.5% on a Raritan PX4 to 3% on an APC AP8858, a 6-fold difference that decides whether the data can support chargeback billing Accuracy standard cited — confirm whether the datasheet names IEC 62053-21 and a class, because 1% corresponds to Class 1 and only Class 0.5 is utility grade Firmware version and support — confirm the unit can still receive firmware, since a networked PDU that cannot be patched is a permanent exposure Firmware licensing — Schneider moved network management card firmware to paid subscription in Q3 2023, so budget for a licence rather than assuming free updates Known vulnerabilities — CVE-2021-22825 names APC AP7xxx and AP8xxx rack PDUs directly, so check the inherited firmware against the vendor advisory Network card replaceability — establish whether the controller is field-replaceable, because a dead card on a fixed-controller unit scraps the whole PDU Inlet and plug — match the plug to the rack whip: L6-30P, L21-30P, IEC 60309 and CS8365C are not interchangeable Outlet count and mix — record C13, C19 and combination outlets separately, because dollars per outlet is the category price unit Outlet retention — check locking outlets and retention clips, since a worn outlet that drops a cord under vibration defeats the purpose Breaker condition — exercise every branch breaker and check for nuisance tripping, which is the most common in-service complaint Form factor and length — a 0U vertical unit is sized to a specific cabinet height, and a 1683 mm strip will not fit a shorter rack Daisy chain and link — confirm the cascade limit, which runs 16, 32, 40 or 50 units depending on manufacturer and document Environmental sensors — confirm which sensor ports and probes are included, because probes are frequently kept by the seller Certification — confirm UL 62368-1 rather than the withdrawn UL 60950-1, which was superseded on 2020-12-20

Procurement channels

New stock through IT distribution including CDW, PCNation, Beach Audio and DeployDepot. The refurbished channel is genuinely deep here: one specialist runs segmented collection pages by voltage and amperage class with a stated 365-day warranty, another lists refurbished APC units without a warranty term, and a third advertises a refurbished AP8959 with a one-year full replacement warranty. This is the only manufacturer in the catalogue with a confirmed warranted refurbished channel.