Square D HDA36050SA Molded Case Circuit Breaker
- 50A
- 3 Pole
- I-Line
Quantity
Square D HDA36050SA - 50A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built for overload and short-circuit protection, the Square D HDA36050SA is a 50A, 3-pole molded case circuit breaker. It is rated for 240VAC, 480VAC, 600VAC and 250VDC. This PowerPacT HDA-series breaker uses an H frame with I-Line mounting. Fixed thermal and fixed magnetic trips provide long-time and instantaneous protection. Approvals include CE, CSA, IEC, NOM and UL.Specifications
| Brand | Square D |
|---|---|
| Part Number | HDA36050SA |
| Series | HDA |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 14kA @ 600VAC, 20kA @ 250VDC |
| Frame Type | HDA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | 14-3/0 AWG (Cu/Al) |
| Max Wire | 3/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Alarm Switch, Auxiliary Switch, Padlock Attachment, Shunt Trip, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated |
Product FAQs
9 answersHow should I use the 50A rating when selecting the Square D HDA36050SA?
The 50A rating is the breaker's rated current. Use it when checking the circuit's load requirements and conductor protection needs, separately from voltage and interrupting ratings.
Which system voltages can this breaker be selected for?
The voltage ratings are 240VAC, 480VAC, 600VAC and 250VDC. Select the rating that corresponds to the circuit's voltage and AC or DC operation, then check the interrupting rating at that voltage.
How much available fault current can this breaker interrupt?
The interrupting ratings are 25kA at 240VAC, 18kA at 480VAC, 14kA at 600VAC and 20kA at 250VDC. The available fault current at the installation point must not exceed the applicable interrupting rating.
Can I adjust the thermal or magnetic trip settings?
Both the thermal and magnetic trip settings are fixed. Thermal-magnetic protection combines a delayed response to sustained overloads with an instantaneous response to high fault currents, so select this breaker when field-adjustable trip settings are not needed.
What conductor sizes and materials do the terminals accept?
The lug terminals accept copper or aluminum conductors from 14 AWG through 3/0 AWG. Use this range to check terminal suitability, while selecting conductor size for the circuit's ampacity and installation requirements.
How does the three-pole configuration affect circuit selection?
This is a three-pole breaker for three-phase applications, with no neutral connection. Account for the three protected phase conductors and handle any circuit neutral separately.
What dimensions should I use when planning installation space?
The breaker measures 6.40 in high, 4.09 in wide and 3.40 in deep. Use these dimensions to plan installation space and access for conductor termination and toggle operation.
What does the HACR rating mean for equipment protection?
HACR means heating, air conditioning and refrigeration. This rating is relevant when selecting circuit protection for equipment that requires an HACR-rated breaker.
What temperature range should I consider for the installation?
The temperature rating is -25C to 70C. Compare the expected temperature at the installation location with this range when selecting the breaker.
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