Siemens HHJD63F400 Molded Case Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Quantity
Siemens HHJD63F400 - 400A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built for overload and short-circuit protection, the Siemens HHJD63F400 is a 3-pole molded case circuit breaker with a rated current of 400A and a 600VAC rating. The Sentron series breaker uses an HHJD frame. Thermal magnetic tripping provides long-time and instantaneous protection. Interrupting ratings are 50kAIC at 600V and 100kAIC at 480V. It has line and load side lug connections and UL and IEC approvals.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HHJD63F400 |
| Series | Sentron |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 480VAC, 50kA @ 600VAC |
| Frame Type | HHJD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (Type P4, P5), Switchboards, Enclosures, Motor Control Centers |
| Wire Gauge | 3/0 AWG-500KCM (Cu), 4/0 AWG-500KCM (Al) |
| Max Wire | 500 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Alarm Switch, Auxiliary Switch, Shunt Trip, Undervoltage Release |
|---|---|
| Standards | UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Product FAQs
7 answersWhat circuit voltage should I use when selecting the Siemens HHJD63F400?
The Siemens HHJD63F400 is rated 600VAC. Select it for an AC circuit whose voltage does not exceed that rating, and check the interrupting rating at the circuit voltage.
How do I check whether the interrupting rating is adequate?
The interrupting rating is 100kAIC at 480V and 50kAIC at 600V. Compare the available fault current at the installation point with the interrupting rating for the applicable voltage; available fault current must not exceed that rating.
How does the thermal-magnetic trip protect the circuit?
The thermal-magnetic trip includes long-time and instantaneous functions. Long-time protection responds to sustained overloads with a delay, while instantaneous protection responds to high fault current without an intentional delay.
What conductor materials and sizes can I terminate?
The conductor range is AWG 3/0 to 500KCM for copper and AWG 4/0 to 500KCM for aluminum. Use the range for your conductor material when selecting conductors for termination.
How are the incoming and outgoing conductors connected?
Both the line and load sides use lug connections. Plan conductor routing to the respective line and load lugs, using the conductor range appropriate to copper or aluminum.
What dimensions should I allow for in the equipment layout?
The breaker measures 11 in high, 7.5 in wide and 4 in deep. Account for these body dimensions when planning equipment layout and conductor routing.
Is this a three-pole breaker for a three-phase circuit?
Yes. Its three-pole configuration provides a pole for each phase of a three-phase circuit, making pole count a selection criterion when the circuit requires three protected phase conductors.
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