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Q-Line Miniature Circuit Breakers

Q-Line Miniature Circuit Breakers

Q-Line circuit breakers are one-inch wide per pole, compact, thermal-magnetic devices designed for OEM applications. All Q-Line circuit breakers feature Quick-make / Quick-break mechanisms, common trip bars, and easy-to-spot trip indications to ensure safety and reliability. Q-Line breakers are available in 1, 2, and 3 pole versions and can be ordered with auxiliary contact and shunt trip accessories.


TH(H)QC - cable-in, cable-out (lug-lug)
The TH(H)QC breakers are Q-Line breakers with lugs designed for mounting on 35mm DIN rails.

TH(H)QB - bolt-on
TH(H)QB are Q-Line breakers with bolt-on for use in ReliaGear® panelboards.

TH(H)QB-RC - ring lug
TH(H)QB- RCs are Q-Line breakers featuring compression or ring lug cable terminals. TH(H)QB-RCs are designed for use in ReliaGear® RQ panelboards.

Features and benefits

  • Compact design
  • Molded case
  • Thermal magnetic
  • Available with lug-lug, bolt-on connection, or ring lug connection
  • Quick connect version available

Technical specifications

  • Available in 15A-100A
  • 10 and 22 kA versions
  • 120/240 and 240 V AC ratings
  • Single, Two, or Three pole units

Certifications and standards

  • UL 489


  • Semiconductor machinery
  • General machinery
  • Data Centers
  • Applications using lighting panelboards