Siemens FD63B080 Molded Case Circuit Breaker
- 80A
- 3 Pole
- Unit Mount
Quantity
Siemens FD63B080 - 80A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Siemens FD63B080 SENTRON FD6 molded case circuit breaker is rated 80A, 600VAC and 500VDC, with 3 poles and 3-phase operation. UL 489 interrupting ratings are 22kA at 600VAC and 35kA at 480VAC. The FD-Frame breaker features unit mounting, line and load side lugs, standard protection and a thermal magnetic LI trip with fixed thermal and adjustable magnetic settings. It has UL and IEC approvals and WEEE, RoHS and REACh standards. The conductor range is 6 AWG - 350 MCM (Cu) and 4 AWG - 350 MCM (Al). Operating temperature is 40 °C. Dimensions are 4 in deep, 4.50 in wide and 9.5 in high.Specifications
| Brand | Siemens |
|---|---|
| Part Number | FD63B080 |
| Series | FD6 |
| Amperage | 80A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 22kA @ 600VAC |
| Frame Type | FD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Panelboards and Switchboards |
| Wire Gauge | 6 AWG - 350 kcmil (Cu), 4 AWG - 350 kcmil (Al) |
| Max Wire | 350 kcmil |
| Min Wire | 6 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 | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Interchangeable Trip Unit |
Product FAQs
8 answersHow should I use the 80A rating when selecting the Siemens FD63B080?
The 80A rated current is the starting point for matching this molded case circuit breaker to the circuit load. Coordinate that rating with conductor ampacity and the circuit's protection requirements.
What voltage ratings should I use for AC and DC circuit selection?
The breaker is rated 600VAC and 500VDC. Use the rating for the circuit's supply type when checking system voltage; the AC and DC ratings are separate selection limits.
How do I check the interrupting rating against available fault current?
The UL 489 interrupting ratings are 35kA at 480VAC and 22kA at 600VAC. Compare available fault current at the installation point with the rating at the applicable voltage; it must not exceed that interrupting rating.
What does the thermal-magnetic LI trip do, and which setting is adjustable?
The thermal-magnetic LI trip provides long-time overload protection and instantaneous short-circuit protection. The thermal setting is fixed, while the magnetic setting is adjustable, allowing the instantaneous pickup to be selected for the circuit's protection requirements.
What copper and aluminum conductor sizes can the terminals accept?
The conductor range is 6 AWG to 350 MCM for copper and 4 AWG to 350 MCM for aluminum. Check both conductor material and size when selecting conductors for the terminals; aluminum has a different minimum size.
How are incoming and outgoing conductors connected?
The breaker has lug connections on both the line and load sides. Plan incoming supply conductors for the line-side lugs and outgoing circuit conductors for the load-side lugs.
What mounting method and dimensions should I use when planning the installation layout?
This is a unit-mount breaker measuring 9.5 in high, 4.50 in wide and 4.00 in deep. Use those dimensions to plan its physical footprint and conductor routing, and plan the mounting arrangement for unit mounting.
How does the three-pole configuration guide circuit selection?
The breaker has three poles and a three-phase configuration. Select it for a circuit requiring a breaker pole for each of the three phase conductors.
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