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Square D HDA36070 Molded Case Circuit Breaker
- 70A
- 3 Pole
- I-Line
Square D
HDA36070
Molded Case Circuit Breaker
Brand
Square D
SKU
HDA36070
Quantity
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Square D HDA36070 - 70A 3 Pole Molded Case Circuit Breaker
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Description
Built for commercial and industrial applications, the HDA36070 is a 70-amp molded case circuit breaker from the Square D PowerPacT H-Frame lineup. It mounts into I-Line panelboards and switchboards, serving as a direct cross-reference for the legacy FA36070. This 3-pole breaker features an adjustable magnetic trip unit, allowing for precise short-circuit protection tuning. With an 18kAIC rating at 480VAC and Visi-Trip indication, it ensures reliable performance and quick fault detection.Specifications
| Brand | Square D |
|---|---|
| Series | HDA |
| Amperage | 70A |
| 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, Square D I-Line Switchboards |
| Wire Gauge | 14-3/0 AWG (Al/Cu) |
| 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, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | HACR, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Non-Interchangeable Trip, Reverse Feed, Visual Trip Indicator |
Product FAQs
6 answersWhat panelboards will accept the HDA36070 circuit breaker?
This I-Line plug-in breaker is designed specifically for use in Square D I-Line panelboards and switchboards. It will not fit in NQ, NF, or standard residential load centers.
What is the adjustable magnetic trip range for the HDA36070?
While the thermal protection is fixed at 70 amps, the instantaneous magnetic trip threshold can be adjusted from 800A on the low setting up to 1450A on the high setting.
Is the HDA36070 rated for 100 percent continuous load operation?
No, this is a standard 80 percent rated circuit breaker. Continuous loads, defined as operating for three hours or more, should not exceed 56 amps to comply with standard electrical code requirements.
Which catalog numbers offer higher short-circuit ratings for this 70A frame?
If your system requires more than the standard 18kAIC at 480V, the direct PowerPacT H-Frame upgrades are the HGA36070 (35kAIC), HJA36070 (65kAIC), and HLA36070 (100kAIC).
Which replacement lug kit is required for the load side of this breaker?
The standard mechanical lug kit for 15A to 150A PowerPacT H-Frame breakers is part number AL150HD. It accepts a wire range of 14 to 3/0 AWG for both aluminum and copper conductors.
Can I use the HDA36070 in a reverse-feed application?
No. Because this breaker features an I-Line plug-in connection on the line side, it is strictly designed for standard line-to-load orientation and is not permitted for reverse feeding.
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