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Enphase 400 A Production Current Transformer (CT-400-277-SOLID)

By EnphaseSKU CT-400-277-SOLID

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Device typeProduction current transformer (solid core)Max switched load (A)Not statedMax switched load (W)Not statedMeasurement channelsNot statedCurrent sensorsSolid coreCurrent rating400 A

Key specs

Units
SKU
CT-400-277-SOLID
Official instruction manual
Sources

Enphase's own code for this product, printed in the specifications column header of the document.

Official instruction manual: Enphase 400 A Production CT quick install guide, 140-00457-01 (November 2025) (November 3, 2026 capture) Rev 140-00457-01 · Checked · Earlier document

Location: PDF page 1, specifications column header

Documented

Device type
Production current transformer (solid core)
Official instruction manual
Sources

Printed as the guide's title and the current transformer type row.

Official instruction manual: Enphase 400 A Production CT quick install guide, 140-00457-01 (November 2025) (November 3, 2026 capture) Rev 140-00457-01 · Checked · Earlier document

Location: PDF page 1, Specifications

Documented

Accuracy
0.5 %
Official instruction manual
Sources

Printed as an error rate of less than 0.5%.

Official instruction manual: Enphase 400 A Production CT quick install guide, 140-00457-01 (November 2025) (November 3, 2026 capture) Rev 140-00457-01 · Checked · Earlier document

Location: PDF page 1, Specifications

Documented

Compatibility
IQ Gateway Commercial Pro (a set of three)
Official instruction manual
Sources

Printed in the guide's introduction.

Official instruction manual: Enphase 400 A Production CT quick install guide, 140-00457-01 (November 2025) (November 3, 2026 capture) Rev 140-00457-01 · Checked · Earlier document

Location: PDF page 1, Introduction

Documented

Voltage range
277 VAC maximum (primary)
Official instruction manual
Sources

Printed as the maximum primary voltage.

Official instruction manual: Enphase 400 A Production CT quick install guide, 140-00457-01 (November 2025) (November 3, 2026 capture) Rev 140-00457-01 · Checked · Earlier document

Location: PDF page 1, Specifications

Documented

Current rating
400 A
Official instruction manual
Sources

Printed as the maximum primary current.

Official instruction manual: Enphase 400 A Production CT quick install guide, 140-00457-01 (November 2025) (November 3, 2026 capture) Rev 140-00457-01 · Checked · Earlier document

Location: PDF page 1, Specifications

Documented

Current sensors
Solid core
Official instruction manual
Sources

Printed in the current transformer type row.

Official instruction manual: Enphase 400 A Production CT quick install guide, 140-00457-01 (November 2025) (November 3, 2026 capture) Rev 140-00457-01 · Checked · Earlier document

Location: PDF page 1, Specifications

Documented

Certifications (as printed)
UL 2808
Official instruction manual
Sources

Printed as "Compliance UL 2808, RoHS" in the specifications table under the CT-400-277-SOLID column; no CE, IEC, TUV or JET mark is printed anywhere in the guide. Manufacturer claim; no issuer directory was checked.

Official instruction manual: Enphase 400 A Production CT quick install guide, 140-00457-01 (November 2025) (November 3, 2026 capture) Rev 140-00457-01 · Checked · Earlier document

Location: PDF page 1, Specifications

Documented

Operating temperature
-40 to 85 °C-40 to 185 °F converted
Official instruction manual
Sources

Printed as -40 to 85 °C (-40 to 185 °F).

Official instruction manual: Enphase 400 A Production CT quick install guide, 140-00457-01 (November 2025) (November 3, 2026 capture) Rev 140-00457-01 · Checked · Earlier document

Location: PDF page 1, Specifications

Documented

All specs8
Device type
Production current transformer (solid core)
Official instruction manual
Sources

Printed as the guide's title and the current transformer type row.

Official instruction manual: Enphase 400 A Production CT quick install guide, 140-00457-01 (November 2025) (November 3, 2026 capture) Rev 140-00457-01 · Checked · Earlier document

Location: PDF page 1, Specifications

Documented

Accuracy
0.5 %
Official instruction manual
Sources

Printed as an error rate of less than 0.5%.

Official instruction manual: Enphase 400 A Production CT quick install guide, 140-00457-01 (November 2025) (November 3, 2026 capture) Rev 140-00457-01 · Checked · Earlier document

Location: PDF page 1, Specifications

Documented

Compatibility
IQ Gateway Commercial Pro (a set of three)
Official instruction manual
Sources

Printed in the guide's introduction.

Official instruction manual: Enphase 400 A Production CT quick install guide, 140-00457-01 (November 2025) (November 3, 2026 capture) Rev 140-00457-01 · Checked · Earlier document

Location: PDF page 1, Introduction

Documented

Voltage range
277 VAC maximum (primary)
Official instruction manual
Sources

Printed as the maximum primary voltage.

Official instruction manual: Enphase 400 A Production CT quick install guide, 140-00457-01 (November 2025) (November 3, 2026 capture) Rev 140-00457-01 · Checked · Earlier document

Location: PDF page 1, Specifications

Documented

Current rating
400 A
Official instruction manual
Sources

Printed as the maximum primary current.

Official instruction manual: Enphase 400 A Production CT quick install guide, 140-00457-01 (November 2025) (November 3, 2026 capture) Rev 140-00457-01 · Checked · Earlier document

Location: PDF page 1, Specifications

Documented

Current sensors
Solid core
Official instruction manual
Sources

Printed in the current transformer type row.

Official instruction manual: Enphase 400 A Production CT quick install guide, 140-00457-01 (November 2025) (November 3, 2026 capture) Rev 140-00457-01 · Checked · Earlier document

Location: PDF page 1, Specifications

Documented

Certifications (as printed)
UL 2808
Official instruction manual
Sources

Printed as "Compliance UL 2808, RoHS" in the specifications table under the CT-400-277-SOLID column; no CE, IEC, TUV or JET mark is printed anywhere in the guide. Manufacturer claim; no issuer directory was checked.

Official instruction manual: Enphase 400 A Production CT quick install guide, 140-00457-01 (November 2025) (November 3, 2026 capture) Rev 140-00457-01 · Checked · Earlier document

Location: PDF page 1, Specifications

Documented

Operating temperature
-40 to 85 °C-40 to 185 °F converted
Official instruction manual
Sources

Printed as -40 to 85 °C (-40 to 185 °F).

Official instruction manual: Enphase 400 A Production CT quick install guide, 140-00457-01 (November 2025) (November 3, 2026 capture) Rev 140-00457-01 · Checked · Earlier document

Location: PDF page 1, Specifications

Documented

Published claims and calculations, not independent test results.

Documents

1 on file
  • WEB
    Enphase 400 A Production CT quick install guide, 140-00457-01 (November 2025) (November 3, 2026 capture)OfficialEnphase Energy, Inc.Official instruction manual
    Source details
    Revision
    140-00457-01
    Revision date
    Not stated

    Linked from Enphase's 400 A Production Current Transformer store page; captured 2026-11-03T03:57:09.640Z (archived copy).

    Location: PDF page 1, Specifications

    Retrieved

    Enphase's quick install guide for the 400 A Production CTs (140-00457-01), whose specifications table names the CT-400-277-SOLID, linked from the Documentation section of Enphase's 400 A Production Current Transformer store page and fetched directly from enphase.com with the paced research fetcher on November 3, 2026 (robots.txt checked first; request ended 03:57:09.640 UTC). Manufacturer claims, not independent tests.

    Archived copies

    Archived copy of a document published by Enphase Energy, Inc.. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.

    Archived backup 140-00457-01 · 0.52 MB

    Archived copy, unaltered, kept as a record of what Enphase Energy, Inc. published. Original address: https://enphase.com/download/400a-production-current-transformer-quick-install-guide. Copyright and takedown

    Source first found
    This copy captured
    Archived
    File detailsOriginal source
    Pages
    3
    Embedded creation date
    Embedded modification date

    Embedded dates are file metadata, not independent proof of publication.

    SHA-256: f4c832c587b0da8536175175ab35854beae53a649f78945b339b4ac08ad2b125

    Open

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Archive and older revisions0

Earlier revisions, archived captures and copies published by someone other than the manufacturer. Every one stays reachable.

Archived documents

Enphase 400 A Production CT quick install guide, 140-00457-01 (November 2025) (November 3, 2026 capture)

Archived copy of a document published by Enphase Energy, Inc.. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.

Archived backup 140-00457-01 · 0.52 MB

Archived copy, unaltered, kept as a record of what Enphase Energy, Inc. published. Original address: https://enphase.com/download/400a-production-current-transformer-quick-install-guide. Copyright and takedown

Source first found
This copy captured
Archived
File detailsOriginal source
Pages
3
Embedded creation date
Embedded modification date

Embedded dates are file metadata, not independent proof of publication.

SHA-256: f4c832c587b0da8536175175ab35854beae53a649f78945b339b4ac08ad2b125

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Parts and accessories

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Model history

Model identity

Model
CT-400-277-SOLID

Manufacturer SKU CT-400-277-SOLID · US market

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