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Grey moulded-case breaker, three-pole I-Line lugs, 9.73 by 4.48 by 4.8 inches

SQUARE D

SQUARE D HGA36030 30 A I-Line Molded Case Circuit Breaker 600V AC

SKU CH-YHJ5-N1MFR

A 30 A molded-case circuit breaker rated 600 V AC with thermal-magnetic trip, 65 kA interrupting at 240 V AC, and I-Line mounting for panelboards

  • TypeCircuit Breakers
  • 30 A rated current protects 600 V AC circuits
  • 65 kA interrupting rating at 240 V AC handles high fault currents
  • Thermal-magnetic trip with fixed 350 A low and 750 A high settings
  • Three-pole I-Line mounting fits Square D panelboards directly
  • Compact 9.73 × 4.48 × 4.8 in frame saves panel space

30 A I-Line breaker for panelboards

The Square D HGA36030 is a three-pole molded case circuit breaker rated 30 A at 600 V AC and 250 V DC. It mounts on I-Line panelboards and uses a fixed instantaneous thermal-magnetic trip unit. The frame size is 150 A HG.

65 kA interrupting at 240 V AC

The breaker delivers a maximum AIR rating of 65 kA at 240 V AC. Low and high trip settings are 350 A and 750 A respectively, giving defined overload headroom. Above that level the fixed instantaneous trip operates without adjustment.

Lug terminals on I-Line mounting

Terminal connections accept lug conductors for straightforward wiring. The unit measures 9.73 in high by 4.48 in wide by 4.8 in deep, fitting the standard I-Line footprint. No additional mounting hardware is required beyond the panelboard bus.

Highlights

  • 30 A rated current protects 600 V AC circuits
  • 65 kA interrupting rating at 240 V AC handles high fault currents
  • Thermal-magnetic trip with fixed 350 A low and 750 A high settings
  • Three-pole I-Line mounting fits Square D panelboards directly
  • Compact 9.73 × 4.48 × 4.8 in frame saves panel space

Specifications

BrandSquare D
ModelHGA36030
TypeCircuit Breakers

Questions about this item

Will this 30 A HGA36030 breaker coordinate with an existing 150 A HG frame feeder in the same I-Line panelboard?

Yes — it shares the 150 A HG frame size and mounts on the same I-Line bus, so the 30 A unit can sit beside the larger feeder without adapter kits.

How do I verify the thermal-magnetic trip is functioning after installation?

Apply rated load and confirm the breaker holds at 30 A; the fixed instantaneous trip is set to operate between 350 A and 750 A, so a controlled over-current test in that range will show the magnetic element opening the contacts.

Does the HGA36030 ship with line and load lugs, or must I order terminals separately?

The breaker includes factory-fitted lug terminals for both line and load connections; no additional lugs are required for standard cable termination.

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