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Siemens FXD63B110L Molded Case Circuit Breaker
- 110A
- 3 Pole
- Unit Mount
Siemens
FXD63B110L
Molded Case Circuit Breaker
Brand
Siemens
SKU
FXD63B110L
Quantity
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Siemens FXD63B110L - 110A 3 Pole Molded Case Circuit Breaker
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Description
Serving commercial and industrial distribution systems, this 110A Sentron series breaker provides proven long-time and instantaneous protection. The unit-mount design integrates seamlessly into Siemens P1 through P5 panelboards, SB switchboards, and motor control centers. Rated for 65kAIC at 240V, the FD-frame device features a non-interchangeable trip unit with fixed thermal and adjustable magnetic settings. Factory-installed TA1FD350A lugs accommodate copper or aluminum conductors.Specifications
| Brand | Siemens |
|---|---|
| Part Number | FXD63B110L |
| Series | FXD6 |
| Amperage | 110A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 22kA @ 600VAC, 30kA @ 250VDC, 18kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P1, P2, P3, P4, P5 Panelboards, SB 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, Auxiliary Switch, Undervoltage Release, Alarm Switch, Lug Kits |
|---|---|
| Accessories | Line and Load Lugs (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, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
6 answersWhat does the L at the end of the FXD63B110L catalog number indicate?
The L signifies that the breaker is supplied with factory-installed line and load side lugs. These standard lugs accept 6 AWG to 350 kcmil copper or 4 AWG to 350 kcmil aluminum wire.
Can the Siemens FXD63B110L be reverse fed?
Yes. This thermal-magnetic breaker is suitable for reverse fed applications, which is commonly required when using the breaker as a back-fed main in a panelboard.
Which Siemens panelboards are compatible with the FXD63B110L breaker?
This FD-frame breaker is designed for use in Siemens P1, P2, P3, P4, and P5 panelboards, as well as SB switchboards and motor control centers. Note that specific mounting hardware or strap kits are required depending on the panel type.
How does the trip unit function on the FXD63B110L?
It features a non-interchangeable thermal-magnetic trip unit with Long-Time (L) and Instantaneous (I) functions. The thermal element provides fixed overload protection at 110A, while the magnetic element is adjustable for short-circuit coordination.
What is the difference between Siemens FD6 and FXD6 breakers?
Both are Sentron series FD-frame breakers, but the FXD6 features a factory-sealed, non-interchangeable trip unit. The standard FD6 frame allows for field-interchangeable trip units.
What maintenance is recommended for the FXD63B110L trip unit?
For optimal safety and performance, periodically exercise the breaker by manually toggling it or using the Push-to-Trip button. Additionally, verify that the line and load lug connections maintain the proper torque specified on the breaker faceplate.
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