The Square D HDP36025 is a 3 Pole thermal magnetic molded case circuit breaker with a current rating of 25 Amps and a voltage rating of 600V. It has an interrupting rating of 18kAIC at 480V. The HDP36025 has a bolt-on connection type and includes long time and instantaneous trip functions.
What are the complete interrupting ratings for the HDP36025 circuit breaker?
In addition to its 18 kAIC rating at 480V, this D-interrupting class breaker is rated for 25 kAIC at 240V and 14 kAIC at 600V.
What wire sizes do the standard lugs on the HDP36025 accept?
The standard line and load lugs for this 25A H-frame breaker accommodate AWG 14 to AWG 3/0 copper or aluminum conductors.
How is the HDP36025 mounted in an electrical panel?
This is a unit-mount, bolt-on circuit breaker. It is designed to be bolted directly to the panelboard or backpan, unlike plug-on or I-Line busway variants.
What type of trip unit is installed in the HDP36025?
It is equipped with a fixed thermal-magnetic trip unit that provides long-time protection for overloads and instantaneous protection for short circuits.
Can the HDP36025 be used in an I-Line panelboard?
No, the HDP36025 is a unit-mount, bolt-on breaker. For an I-Line panelboard, you would need the I-Line version, catalog number HDA36025.
Can the HDP36025 be used to replace older Square D 25A breakers?
Yes, the PowerPacT H-frame series is often used to upgrade or replace legacy Square D 25A 3-pole unit-mount breakers, such as the discontinued FAL36025. However, you should verify panel mounting dimensions and lug clearances before retrofitting.
Can I add field-installable accessories to the HDP36025?
Yes, the PowerPacT H-frame supports a variety of field-installable internal accessories, including shunt trips, undervoltage releases, and auxiliary switches. These are installed behind the front cover of the breaker.
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