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Transparent Eaton FH22 thermal unit with trip class 20 markings

Eaton

Eaton FH22 Thermal Unit Trip Class 20

SKU CH-E0EB-PZZ6F

Thermal overload unit for NEMA 0-2 starters, trip class 20, 1.63-2.06 A range

  • TypeIndustrial Electrical Controls & Automation
  • ColorTransparent
  • Reliable overload protection with Trip Class 20 response
  • Precise motor safeguarding at 1.63–1.78 A full load current
  • Extended coverage up to 2.06 A for broader compatibility
  • Fits NEMA Size 0, 1, 2 starters for flexible installation
  • Direct replacement for Grainger 11Z488 through 11Z497 part numbers

Eaton FH22 Thermal Unit

The Eaton FH22 is a thermal overload unit rated for Trip Class 20 and designed for use with NEMA Size 0, 1 and 2 starters. It suits maintenance teams and panel builders who need reliable motor protection in industrial control circuits.

Integration into a motor starter

The unit fits Series A200 and B100 starters and matches Grainger part numbers 11Z488 through 11Z497. It requires a compatible starter base and wiring to the motor circuit; once installed it frees the starter from nuisance trips during normal start-up inrush.

Current range and trip behaviour

The thermal unit covers full-load current bands of 1.63 to 1.78 A and 1.88 to 2.06 A, opening on sustained overloads per Class 20 timing. It will not protect against short-circuit faults or provide adjustable trip settings beyond the fixed thermal curve.

Highlights

  • Reliable overload protection with Trip Class 20 response
  • Precise motor safeguarding at 1.63–1.78 A full load current
  • Extended coverage up to 2.06 A for broader compatibility
  • Fits NEMA Size 0, 1, 2 starters for flexible installation
  • Direct replacement for Grainger 11Z488 through 11Z497 part numbers

Specifications

BrandEaton
TypeIndustrial Electrical Controls & Automation
ColorTransparent

Questions about this item

At what current does the Eaton FH22 thermal unit trip during prolonged overload?

The thermal unit is rated for trip class 20 and covers full-load current ranges of 1.63 to 1.78 A and 1.88 to 2.06 A, so sustained current above the selected range will cause it to trip.

How much heat does the Eaton FH22 thermal unit generate when operating continuously?

As a thermal overload device, it dissipates heat proportional to the current flowing through it; at the rated ranges of 1.63 to 2.06 A the temperature rise stays within the trip-class-20 limits.

Which motor starter series must I already have for the Eaton FH22 thermal unit to fit?

The unit is compatible with Eaton Series A200 and B100 starters in NEMA sizes 0, 1 and 2.

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