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Siemens FD63B250 Molded Case Circuit Breaker
- 250A
- 3 Pole
- Unit Mount
Siemens
FD63B250
Molded Case Circuit Breaker
Brand
Siemens
SKU
FD63B250
Quantity
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Siemens FD63B250 - 250A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens FD63B250 - 250A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | FD63B250 |
| Series | FD6 |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 22kA @ 600VAC, 18kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P1 (Subfeed), P2, P3, P4, P5 Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 6 AWG - 350 kcmil (Cu), 4 AWG - 350 kcmil (Al) |
| Max Wire | 350 kcmil |
| Min Wire | 6 AWG (Cu), 4 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Undervoltage Release, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs Included, TA1FD350A |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Interchangeable Trip Unit |
Quantity
Siemens FD63B250 - 250A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | FD63B250 |
| Series | FD6 |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 22kA @ 600VAC, 18kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P1 (Subfeed), P2, P3, P4, P5 Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 6 AWG - 350 kcmil (Cu), 4 AWG - 350 kcmil (Al) |
| Max Wire | 350 kcmil |
| Min Wire | 6 AWG (Cu), 4 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Undervoltage Release, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs Included, TA1FD350A |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Interchangeable Trip Unit |
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Description
Serving as a robust industrial protection solution, this 250-amp Sentron breaker utilizes proven thermal-magnetic trip technology. The LI protection scheme ensures precise response to both sustained overloads and instantaneous short circuits. Installation is straightforward into Siemens P1 through P5 panelboards. The included TA1FD350A lugs accommodate conductors from 6 AWG to 350 kcmil. With a 35kAIC rating at 480V, it meets stringent commercial specifications for heavy-duty applications.Specifications
| Brand | Siemens |
|---|---|
| Part Number | FD63B250 |
| Series | FD6 |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 22kA @ 600VAC, 18kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P1 (Subfeed), P2, P3, P4, P5 Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 6 AWG - 350 kcmil (Cu), 4 AWG - 350 kcmil (Al) |
| Max Wire | 350 kcmil |
| Min Wire | 6 AWG (Cu), 4 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Undervoltage Release, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs Included, TA1FD350A |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Interchangeable Trip Unit |
Product FAQs
8 answersDoes the FD63B250 come with line and load lugs, and what wire sizes are accepted?
Yes, it includes factory-installed line and load lugs (catalog TA1FD350A) that accept 6 AWG to 350 kcmil copper or 4 AWG to 350 kcmil aluminum wiring.
Are the thermal and magnetic trip functions adjustable on this 250A breaker?
The thermal (Long-Time) overload setting is fixed at 250 amps, but the magnetic (Instantaneous) short-circuit trip setting is adjustable to allow for precise coordination with downstream protective devices.
Which Siemens electrical distribution equipment is compatible with the FD63B250?
This FD-frame molded case circuit breaker installs easily into Siemens P2, P3, P4, and P5 panelboards, as well as standard switchboards and motor control centers. It can also be utilized as a subfeed breaker in P1 panelboards.
Is the FD63B250 suitable for direct current (DC) applications?
Yes, in addition to standard AC voltages, this 3-pole Sentron breaker is rated for up to 500VDC with an 18 kAIC interrupting capacity, making it versatile for industrial DC systems.
Is the FD63B250 breaker HACR rated for HVAC applications?
Yes, this model is UL Listed and HACR rated, meaning it is certified for safe use in heating, air conditioning, and refrigeration equipment circuits.
Can the trip unit on the FD63B250 be replaced or upgraded?
Yes, the FD63B250 features a Type FD6-A interchangeable thermal-magnetic trip unit. This allows the trip assembly to be swapped without having to replace the entire breaker frame if system requirements change.
What ambient temperature is the FD63B250 calibrated for?
This Sentron series circuit breaker is factory calibrated for use in standard 40 degrees Celsius (104 degrees Fahrenheit) ambient temperature environments.
How is the FD63B250 physically mounted inside an enclosure?
The FD63B250 is a unit-mount (bolt-on) circuit breaker. It bolts directly to the mounting surface, panelboard structure, or equipment chassis without requiring a separate plug-in base assembly.
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