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Siemens FXD63B090 Molded Case Circuit Breaker
- 90A
- 3 Pole
- Unit Mount
Siemens
FXD63B090
Molded Case Circuit Breaker
Brand
Siemens
SKU
FXD63B090
Quantity
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Siemens FXD63B090 - 90A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens FXD63B090 - 90A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | FXD63B090 |
| Series | FXD6 |
| Amperage | 90A |
| 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 |
| Frame Type | FXD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, Switchboards, Motor Control Centers |
| 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 | No Lugs |
| Standards | CSA C22.2 No. 5, HACR Rated, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip |
Quantity
Siemens FXD63B090 - 90A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | FXD63B090-R |
| Series | FXD6 |
| Amperage | 90A |
| 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 |
| Frame Type | FXD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, Switchboards, Motor Control Centers |
| 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 | No Lugs |
| Standards | CSA C22.2 No. 5, HACR Rated, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip |
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Description
Delivering 35 kAIC at 480VAC, the Siemens FXD63B090 is a 90A, 3-pole molded case circuit breaker from the Sentron family. It provides reliable long-time and instantaneous (LI) protection for commercial and industrial electrical systems. This unit mount MCCB installs into Siemens P1, P2, and P3 panelboards, switchboards, and motor control centers. It serves as a replacement for legacy F-Frame breakers. The breaker features an adjustable magnetic trip and requires lug kits for wiring.Specifications
| Brand | Siemens |
|---|---|
| Part Number | FXD63B090 |
| Series | FXD6 |
| Amperage | 90A |
| 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 |
| Frame Type | FXD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, Switchboards, Motor Control Centers |
| 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 | No Lugs |
| Standards | CSA C22.2 No. 5, HACR Rated, 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 lug kit is used with the FXD63B090?
The standard lug kit for this breaker is the TA1FD350A. It accepts 6 AWG to 350 kcmil copper or 4 AWG to 350 kcmil aluminum conductors.
Will the FXD63B090 replace a legacy FD63B090 breaker?
Yes, the FXD63B090 is the direct, current-generation replacement for the obsolete FD63B090 F-Frame breaker. It shares the same physical dimensions and mounting requirements.
What is the magnetic trip range for this 90A breaker?
The FXD63B090 features an adjustable magnetic trip that can be set between 600A and 900A, allowing for precise short-circuit coordination in your distribution system.
Can the thermal overload setting be adjusted on the FXD63B090?
No, the thermal trip is fixed at 90 amps. Only the instantaneous magnetic trip response is adjustable on this unit.
How is this breaker installed in Siemens P-Series panelboards?
Because the FXD63B090 is a bolt-on, unit-mount breaker, installing it into Siemens P1, P2, or P3 panelboards requires a separate strap kit or mounting hardware assembly specific to your panel's bus structure.
How should this breaker be wired for 500VDC applications?
When using this 3-pole breaker on a 500VDC ungrounded system, it is standard practice to wire the power supply in series across all three poles to safely interrupt DC arcs.
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