Motor Protection Circuit Breaker Series 8527/2

Motor Protection Circuit Breaker Series 8527/2

Series 8527/2

  • For protection of Ex e and Ex d motors
  • Protects cables and plant equipment
  • Adjustable thermal overload release, phase failure sensitive
  • Electromagnetic instantaneous release
  • Robust enclosure made of glass fibre reinforced polyester resin
  • Optionally with
    • undervoltage release
    • shunt release
    • ammeter
    • auxiliary contacts

Motor protection circuit breakers of Series 8527 are used where high short circuit currents are to be controlled and to protect both Ex e and Ex d motors. These switches are suitable to protect cables and the installation and can basically be used without a back-up fuse at 400 V.

Breakers are operated by rotary handles enabling next to secure switching also to identify clearly switch settings.

Zone 0 1 2 20 21 22
For use in x x x x

Data sheets

Document Size Language
Data sheet 1,41 MB English
Data sheet 1,41 MB German
Data sheet 784 kB Spanish
Data sheet 790 kB French
Data sheet 1,47 MB Russian

Operating Instructions

Document Size Language
Operation Instructions 1,51 MB English
Operation Instructions 3 MB English/German
Operation Instructions 1,51 MB German
Operation Instructions 1,52 MB Spanish
Operation Instructions 1,52 MB French
Operation Instructions 1,56 MB Russian
Operation Instructions 1,51 MB Italian


Type Certificate No. Document-Type Language Cer. Body Country/ Region
8527 DMT02ATEXE026 Ex Certificate deen BVS European Union (ATEX)
8527 IECEXBVS080047 Ex Certificate en BVS IECEx
8527 LR9948024 Ex Certificate en CSA Canada