Siemens HPD63B120 Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Panel Mount
Quantity
Siemens HPD63B120 - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built to protect circuits against overloads and short circuits, the Siemens HPD63B120 is a molded case circuit breaker rated for 1200A. It has voltage ratings of 600VAC and 500VDC and uses a PD-Frame. Its UL 489 interrupting ratings are 65kA at 480VAC and 50kA at 600VAC. The thermal magnetic trip provides LI protection, with long-time and instantaneous trip functions.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HPD63B120 |
| Series | HPD6 |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 50kA @ 600VAC |
| Frame Type | PD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Panelboards and Switchboards |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Temp Rating | 40C |
|---|
Product FAQs
6 answersHow should I use the Siemens HPD63B120's 1200A current rating when selecting it?
Use the 1200A rated current when coordinating the breaker with the circuit load and conductor ampacity. Current rating and trip characteristics both matter when selecting circuit protection.
Can the HPD63B120 be selected for AC or DC circuits?
The breaker has rated voltages of 600VAC and 500VDC. Select against the rating for the circuit's AC or DC supply, keeping the circuit voltage within that rating.
How do I check the HPD63B120's interrupting rating against available fault current?
At 480VAC, available fault current must not exceed its 65kA interrupting rating; at 600VAC, it must not exceed its 50kA rating. These are UL 489 interrupting ratings, so use the value corresponding to the application voltage.
What protection does the HPD63B120's LI thermal-magnetic trip offer?
LI means long-time and instantaneous protection. The thermal element responds to sustained overloads, while the magnetic element responds to high short-circuit current, giving separate responses to overload and fault conditions.
Which trip settings can I adjust on the HPD63B120?
The thermal trip is fixed, while the magnetic trip is adjustable. Use the magnetic adjustment when coordinating the instantaneous response with circuit inrush and short-circuit protection needs; the thermal response is not field-adjustable.
What does the HPD63B120's three-pole arrangement mean for installation?
The Siemens HPD63B120 is a three-pole, three-phase breaker. Plan line and load conductor terminations for each of the three phases.
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