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Siemens CFD63B110 Molded Case Circuit Breaker
- 110A
- 3 Pole
- Unit Mount
Siemens
CFD63B110
Molded Case Circuit Breaker
Brand
Siemens
SKU
CFD63B110
Quantity
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Siemens CFD63B110 - 110A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial and industrial applications, the CFD63B110 provides reliable thermal-magnetic protection within the Siemens Sentron FD frame family. This 3-pole, 110A unit-mount breaker is designed for integration into P1, P2, and P3 panelboards, as well as switchboards and motor control centers. Rated for an impressive 200kAIC at 480VAC, it features a fuseless, current-limiting design that minimizes let-through energy during short circuits. Lugs are not included.Specifications
| Brand | Siemens |
|---|---|
| Part Number | CFD63B110 |
| Series | CFD6 |
| Amperage | 110A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480VAC, 100kA @ 600VAC, 50kA @ 500VDC |
| Frame Type | CFD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (P1, P2, P3), Switchboards, Motor Control Centers, Enclosures |
| 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, Padlock Attachment, Motor Operator, Rotary Handle, Lug Kits |
|---|---|
| Accessories | Lugs Not Included |
| Standards | HACR Rated, IEC 60947-2, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, HACR Rated, Non-Interchangeable Trip, Fuseless |
Product FAQs
8 answersIs the Siemens CFD63B110 a current-limiting circuit breaker?
Yes. The CFD63B110 features a fuseless current-limiting design. It utilizes magnetic repulsion to force the contacts apart during a short circuit, significantly reducing let-through energy and protecting downstream equipment.
How does the adjustable magnetic trip function on the CFD63B110 work?
While the thermal overload protection is fixed at 110 amps, the adjustable magnetic trip allows you to tune the instantaneous short-circuit response. This is useful for coordinating with downstream devices or preventing nuisance tripping from motor inrush currents.
Which Siemens panelboards are compatible with the CFD63B110 breaker?
This FD-frame breaker is designed for unit mounting in Siemens Sentron P1, P2, and P3 panelboards, as well as compatible switchboards, motor control centers, and standalone enclosures.
What wire sizes are accepted by the standard lugs on the CFD63B110?
The standard lugs accommodate copper wire from 6 AWG to 350 kcmil, and aluminum wire from 4 AWG to 350 kcmil. Always verify proper torque specifications during installation.
Can I swap the trip unit on the CFD63B110 to change the amperage?
No. The CFD63B110 is built with a non-interchangeable trip unit. If you require a different amperage rating, you must replace the entire circuit breaker.
Is the CFD63B110 suitable for HVAC applications?
Yes. This breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires a 110A, 3-pole breaker.
What is the benefit of the 200kAIC rating at 480V on this breaker?
The 200kAIC rating allows the CFD63B110 to safely interrupt extremely high fault currents without sustaining catastrophic damage. This makes it ideal for heavy industrial facilities and commercial distribution systems with high available fault currents.
Can the CFD63B110 be used in DC power systems?
Yes. In addition to its AC ratings, this breaker is rated for 500VDC with an interrupting capacity of 50kA. This makes it suitable for specific industrial DC control and distribution applications.
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