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Siemens FD63B250L Molded Case Circuit Breaker
- 250A
- 3 Pole
- Unit Mount
Siemens
FD63B250L
Molded Case Circuit Breaker
Brand
Siemens
SKU
FD63B250L
Quantity
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Siemens FD63B250L - 250A 3 Pole Molded Case Circuit Breaker
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Description
Part of the Sentron series, this 250-amp unit mount molded case circuit breaker provides reliable long-time and instantaneous trip functions. It serves commercial facilities requiring robust power distribution. The FD6 frame design integrates into Siemens P1 subfeed, P2, P3, P4, and P5 panelboards, as well as motor control centers. Factory-installed lugs accommodate copper or aluminum wiring.Specifications
| Brand | Siemens |
|---|---|
| Part Number | FD63B250L |
| 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, Motor Operator, Rotary Handle, Padlock Attachment |
|---|---|
| Accessories | Line and Load Lugs Included (Factory Installed) |
| 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
5 answersWhat panels and equipment are compatible with the Siemens FD63B250L circuit breaker?
This FD-frame breaker is designed for use in Siemens P1 (subfeed applications), P2, P3, P4, and P5 panelboards, as well as Siemens switchboards and motor control centers.
Does the FD63B250L come with lugs, and what wire sizes do they accept?
Yes, the "L" in the catalog number indicates that factory-installed line and load side lugs are included. They accept 6 AWG to 350 kcmil copper (Cu) wire or 4 AWG to 350 kcmil aluminum (Al) wire.
Are the trip settings on the FD63B250L adjustable?
Yes, this breaker features a thermal-magnetic trip unit with fixed thermal protection for long-time overloads and an adjustable magnetic setting for instantaneous short-circuit protection.
Is the trip unit on the FD63B250L interchangeable?
Yes, this breaker features an interchangeable trip unit design. This allows the thermal-magnetic trip unit to be swapped or upgraded within the FD6 frame without replacing the entire breaker assembly.
What does the "L" at the end of the FD63B250L catalog number signify?
The "L" indicates that the breaker is supplied complete with factory-installed line and load lugs. Breakers ordered without this suffix typically require lugs to be purchased and installed separately.
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