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Brooks

4900 Series Adapter

Brooks 4900 Series Adapter family
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The Brooks 4900 Series Adapter is a 125 amp A to S conversion adapter. The Brooks 4900 Series Adapter is molded from fiberglass-reinforced polyester. The Brooks 4900 Series Adapter is rated NEMA 3R for indoor and outdoor use.[1]

Brooks4900 Series Adapter
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What it is

The 4900 Series Adapter is rated for 125 amps. The 4900 Series includes several single-phase models such as the 4900-2W (1S), 4900-2W5J (12/25S), 4900-2W2WM (1S), 4900-3W (2S), 4900-3W5J (12/25S), and 4900-3W6J (4S). The adapter is molded from fiberglass-reinforced polyester and is rated NEMA 3R for indoor and outdoor use. Each 4900 Series adapter can be upgraded to include a sealing ring by adding “-S2” to the part number, which installs a 10-9090 Ring.[1]

What can it run?

Process applications and technology nodes documented for this tool.

  • replacing single phase bottom connected meters with modern socket type meters

What do the numbers mean?

Power & electrical2

Current rating
125 amp[1]
Accurate?
Function
replacing single phase bottom connected meters with modern socket type meters[1]
Accurate?

Configuration & options3

Type
A to S conversion adapter[1]
Accurate?
Material
fiberglass-reinforced polyester[1]
Accurate?
Environment rating
NEMA 3R for indoor and outdoor use[1]
Accurate?
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What does it need to run?

Site utility requirements, footprint, and infrastructure needed to install and operate this tool. Sourced from public records.

  • Current rating125 amp[1]
  • Functionreplacing single phase bottom connected meters with modern socket type meters[1]

Where are the manuals?

Generated from public-source data on file. Enter your email to access — nothing is published; details are routed privately.

Not publicly documented

Field notes

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Frequently asked questions

What is the current rating of the 4900 Series Adapter?

The 4900 Series Adapter is rated for 125 amps.[1]

What material is the 4900 Series Adapter made from?

The 4900 Series Adapter is molded from fiberglass-reinforced polyester.[1]

What NEMA rating does the 4900 Series Adapter have?

The 4900 Series Adapter is rated NEMA 3R for indoor and outdoor use.[1]

Which meter forms are compatible with the 4900 Series adapter models listed?

The listed models accommodate meter forms 1S, 2S, 4S, 12S, and 25S. For example, the 4900-2W accepts form 1S, the 4900-3W accepts form 2S, and the 4900-3W6J accepts form 4S.[1]

Can the 4900 Series Adapter be equipped with a sealing ring?

Yes, each 4900 Series Adapter can be upgraded to include a sealing ring by adding “-S2” to the part number, which installs a 10-9090 Ring.[1]

Not publicly documented

The following facts about the 4900 Series Adapter are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.

  • No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the 4900 Series Adapter are on record.

    Answerable by: OEM historical records or a trade-press announcement

  • No publicly documented variants, configuration options, or revision breakpoints of the 4900 Series Adapter are on record.

    Answerable by: an OEM product catalog or an engineer who ordered or specified the tool

  • The control-system platform and OS era of the 4900 Series Adapter are not on record.

    Answerable by: an engineer who operated it or OEM installation records

  • No publicly documented failure modes or field errata for the 4900 Series Adapter are on record.

    Answerable by: a field service engineer, process engineer, or maintenance technician

  • The process node or technology generation of the 4900 Series Adapter is not on record.

    Answerable by: an OEM datasheet or a fab qualification report

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Sources & citations

Sources (1)Every fact above is drawn from these public sources
  1. [1]brooksutility.com — brooksutility.combrooksutility.com
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Last updated Oct 2, 2026.

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