3WT8121-5UN74-5AF1

Product ID:209308
Updated: 2026/7/5
Siemens 3WT8121-5UN74-5AF1

Key Features

  • 1Handle robust power with up to 66 kA breaking capacity at 500V.
  • 2Adjust protection settings via the advanced ETU37WT electronic trip unit.
  • 3Combine components easily for flexible application in various settings.
  • 4Ensure safety with a mechanical reclosing lockout device after tripping.
  • 5Operate easily with clear ON-OFF and ready-to-close indicators.

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Technical Specifications

Detailed engineering parameters

ParameterValueParameterValue
Lifecycle
Delivery Release (PM300)
Country of Origin
China
ECCN
N
AL
N
Model Number
3WT8121-5UN74-5AF1

Specifications may be subject to change without notice

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