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Eaton FD1030 molded case circuit breaker, single-pole, grey plastic housing, lug terminals visible

Eaton

Eaton FD1030 Molded Case Circuit Breaker 30A 1 Pole 347V AC 35kA

SKU CH-Y0R5-XTBS9

Molded case circuit breaker rated 30 A at 347 V AC with 35 kA interrupting capacity and thermal-magnetic trip adjustable from 15 A to 150 A

  • 30 A rated current protects single-phase 347 V AC circuits
  • Thermal-magnetic trip operates between 15 A and 150 A settings
  • 35 kA interrupting capacity at 277 V AC handles high fault currents
  • 125 V DC rating allows use on low-voltage DC systems
  • 225 A frame size fits standard FD-series panel spaces

FD1030 Molded Case Circuit Breaker

The FD1030 is a single-pole molded case circuit breaker rated at 30 amps for 347 volts AC with a 35 kA interrupting rating at 277 volts AC. It uses a thermal-magnetic trip mechanism with fixed instantaneous settings and adjustable trip points between 15 and 150 amps. The unit fits a 225 amp frame and provides a load-side lug terminal connection. It suits panel builders and maintenance crews working on compatible motor control centres or switchboards.

Replaces worn FD-series breakers

This breaker serves as a direct replacement for an existing FD-series unit that has tripped repeatedly, shows contact wear, or no longer holds its calibrated trip curve. The jump is worth it when the installed breaker’s interrupting rating falls short of the available fault current or when the adjustable range of 15 to 150 amps better matches the protected circuit’s load profile. It also fits upgrades from fixed-trip models where coordination studies now demand adjustable settings.

Verify system voltage and bus compatibility

Before ordering, confirm the system operates at 347 volts AC or 125 volts DC and that the available fault current does not exceed 35 kA at 277 volts AC. Check that the mounting hardware and bus bars accept a 225 amp frame FD-series breaker with a single-pole, phase-A connection and load-side lug terminals. Ensure the enclosure is rated for the breaker’s interrupting capacity and that the thermal-magnetic trip characteristic suits the application.

Highlights

  • 30 A rated current protects single-phase 347 V AC circuits
  • Thermal-magnetic trip operates between 15 A and 150 A settings
  • 35 kA interrupting capacity at 277 V AC handles high fault currents
  • 125 V DC rating allows use on low-voltage DC systems
  • 225 A frame size fits standard FD-series panel spaces

Specifications

BrandEATON

Questions about this item

What frame size and terminal lug does the FD1030 breaker use for panel mounting?

It fits a 225 A frame and connects with a load-side lug terminal.

How is the thermal-magnetic trip unit set, and what setting is often missed?

The low trip is 15 A, high trip is 150 A, and the instantaneous trip is fixed; installers sometimes forget to verify the 150 A high setting.

When should the breaker be replaced after interrupting a 35 kA fault at 277 V AC?

After a 35 kA short-circuit event at 277 V AC the breaker must be replaced even if it appears undamaged.

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