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Compact grey moulded-case breaker, three toggle switches, lug terminals, 6.4 by 4.12 by 4.36 inches

SQUARE D

SQUARE D HDL36015 POWERPACT H Circuit Breaker 15A 3 Pole

SKU CH-Y4Z4-BKF37

Molded-case circuit breaker rated 15 A, 600 V AC with 25 kA interrupting at 240 V AC and thermal-magnetic trip

  • 15 A three-pole protection for three-phase circuits
  • 25 kA interrupting at 240 V AC handles high fault currents
  • Thermal-magnetic trip with fixed 350 A low and 750 A high settings
  • 600 V AC and 250 V DC ratings suit mixed-voltage panels
  • Compact 6.4 × 4.12 × 4.36 in frame fits standard enclosures

SQUARE D POWERPACT H 15A Three-Pole Breaker

The SQUARE D HDL36015 is a molded-case circuit breaker from the POWERPACT H series rated at 15 amps with three poles. It provides thermal-magnetic protection for three-phase AC systems up to 600 volts and DC systems up to 250 volts. The unit mounts free-standing and uses line/load lug terminals for connection.

Suits panels needing 25kA interruption at 240V AC

This breaker fits installations requiring a 150-amp frame size with fixed instantaneous trip settings of 350 amps low and 750 amps high. It is not for applications that need adjustable trip curves, higher ampere ratings within the same frame, or DC voltages above 250 volts. Buyers needing different pole counts or mounting styles should look elsewhere.

Verify 6.4 by 4.12 by 4.36 inch clearance

Before ordering, confirm the enclosure has space for the stated height, width and depth dimensions. Ensure the existing bus or cable arrangement accepts line/load lug terminals and that the 3-pole ABC phase connection matches your panel layout. Check that the 25kA AIR rating at 240V AC meets the system’s fault-current requirements.

Highlights

  • 15 A three-pole protection for three-phase circuits
  • 25 kA interrupting at 240 V AC handles high fault currents
  • Thermal-magnetic trip with fixed 350 A low and 750 A high settings
  • 600 V AC and 250 V DC ratings suit mixed-voltage panels
  • Compact 6.4 × 4.12 × 4.36 in frame fits standard enclosures

Specifications

BrandSQUARE D

Questions about this item

Will the 3-pole HDL36015 fit in a panel built for a 150 A HD frame?

Yes, the breaker uses the 150 A HD frame size and standard free-standing mounting, so it matches existing HD-frame panel cut-outs and bus spacing.

Can the 15 A trip unit coordinate with a 25 kA downstream breaker at 240 V AC?

The fixed thermal-magnetic trip has low and high settings of 350 A and 750 A, giving a wide separation from a 25 kA downstream device for selective coordination.

How do I confirm the breaker trips at the 350 A low setting after installation?

Apply a calibrated 350 A test current through each pole; the thermal element should open the contacts within the manufacturer’s time-current curve for the 15 A rating.

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