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Transparent Eaton FH19 thermal overload unit, trip class 20

Eaton

Eaton FH19 Thermal Unit Trip Class 20

SKU CH-ES3E-J6BBV

Thermal overload unit rated for trip class 20 and currents from 1.23 to 1.55 A, compatible with NEMA sizes 0, 1 and 2

  • TypeIndustrial Electrical Controls & Automation
  • ColorTransparent
  • Trip Class 20 ensures reliable overload protection
  • Full-load current range 1.23 to 1.55 A covers multiple motor sizes
  • Compatible with NEMA sizes 0, 1 and 2 for flexible installation
  • Works with Series A200 and B100 starters for direct replacement
  • Matches Grainger part numbers 11Z488 through 11Z497 for easy cross-reference

Application and purpose

The Eaton FH19 thermal unit provides overload protection for motor starters in industrial control panels. It suits maintenance engineers and panel builders who need a direct replacement for NEMA size 0, 1 or 2 starters in Series A200 or B100 equipment.

Trip class and current range

The single specification that decides fit is the trip class 20 rating combined with the full-load current windows of 1.23 to 1.34 A and 1.42 to 1.55 A. Selecting the wrong window will cause nuisance trips or leave the motor unprotected.

Sustained-load behaviour

Under continuous overload the thermal element heats gradually, matching the motor’s own thermal curve so protection remains accurate during long duty cycles. The transparent housing allows visual confirmation of the trip indicator without removing the unit.

Highlights

  • Trip Class 20 ensures reliable overload protection
  • Full-load current range 1.23 to 1.55 A covers multiple motor sizes
  • Compatible with NEMA sizes 0, 1 and 2 for flexible installation
  • Works with Series A200 and B100 starters for direct replacement
  • Matches Grainger part numbers 11Z488 through 11Z497 for easy cross-reference

Specifications

BrandEaton
TypeIndustrial Electrical Controls & Automation
ColorTransparent

Questions about this item

What does Trip Class 20 mean once the thermal unit is installed in a motor starter?

Trip Class 20 means the unit allows up to 20 seconds at locked-rotor current before it trips, giving motors with high inertia time to accelerate without nuisance shutdowns.

Which starter series does the FH19 thermal unit fit, and what current range does it cover?

The FH19 fits Eaton Series A200 and B100 starters in NEMA Sizes 0, 1 and 2, covering full-load currents from 1.23 to 1.34 A and 1.42 to 1.55 A.

What physical space and mounting does the FH19 thermal unit need inside the starter?

The transparent FH19 module plugs directly into the overload relay cavity of compatible A200 and B100 starters, requiring no extra hardware or panel cut-outs.

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