Allen-Bradley 140M Installation Instructions Manual

Allen-Bradley 140M motor circuit protector provides reliable short-circuit protection for motors in industrial applications. With a rating of 250A, it's ideal for use with NEMA motor starters sizes 4 and 5. The 140M is designed to comply with UL489 and IEC 157-1 standards, ensuring safety and performance. It features a non-sealed construction and is marked LINE and LOAD, making it suitable for forward power flow only.

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Allen-Bradley 140M Installation Instructions Manual | Manualzz

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Key features

  • Suitable for NEMA motor starter sizes 4 and 5
  • Magnetic-only instantaneous tripping
  • Interphase barriers can be installed for increased safety
  • Can be used with aluminum conductors with suitable joint compound
  • Internally-mounted accessories are available for field installation
  • Terminals can be installed before or after mounting
  • Cover screws are thread-forming for secure retention

Frequently asked questions

250A

3-pole only

No, it is a non-sealed device and is marked LINE and LOAD

Magnetic-only instantaneous tripping
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