The Square D HDA36030SA is a 3 Pole thermal magnetic molded case circuit breaker with a current rating of 30 Amps and a voltage rating of 600VAC, 500VDC. It has an interrupting rating of 25kAIC at 240V, 18kAIC at 480V. The HDA36030SA has an I-Line style plug-in connection type and includes long time and instantaneous trip functions.
What does the "SA" suffix indicate on the HDA36030SA catalog number?
The "SA" suffix denotes that this circuit breaker includes a factory-installed 120VAC shunt trip accessory. This allows the breaker to be tripped remotely via a control signal.
What type of panelboard is required for the HDA36030SA?
This breaker features an I-Line style plug-in connection. It is exclusively compatible with Square D I-Line panelboards and switchboards and cannot be installed in standard unit-mount enclosures or load centers.
How is the HDA36030SA wired during installation?
As an I-Line plug-in breaker, the line side connects directly to the panelboard busbar without the need for wire terminations. Field wiring is only required on the load side lugs, which accept 14 AWG to 3/0 AWG aluminum or copper conductors.
Are the trip settings adjustable on the HDA36030SA?
No, this breaker is equipped with a traditional thermal-magnetic trip unit. Both the long-time (overload) and instantaneous (short-circuit) trip thresholds are fixed at the factory and cannot be adjusted in the field.
If I already have a standard HDA36030, can I add the 120VAC shunt trip in the field?
Yes. While the HDA36030SA comes with the 120VAC shunt trip factory-installed, you can add this functionality to a standard HDA36030 by purchasing and field-installing the Square D S29386 shunt trip kit.
Is the HDA36030SA rated for use in direct current (DC) systems?
Yes, in addition to its 600VAC rating, this thermal-magnetic breaker is rated for up to 500VDC, making it suitable for specific industrial DC power applications.
Does the HDA36030SA provide ground fault protection?
No. This is a standard thermal-magnetic circuit breaker designed to protect against overloads and short circuits. It does not feature integrated equipment ground fault protection (LSIG) or personnel ground fault circuit interruption (GFCI).
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