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Siemens CFD63B150L Molded Case Circuit Breaker
- 150A
- 3 Pole
- Unit Mount
Siemens
CFD63B150L
Molded Case Circuit Breaker
Brand
Siemens
SKU
CFD63B150L
Quantity
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Siemens CFD63B150L - 150A 3 Pole Molded Case Circuit Breaker
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Description
The CFD63B150L is a 150A, 3-pole molded case circuit breaker from the Siemens Sentron family. Built for demanding commercial and industrial applications, this FD-frame unit provides reliable thermal-magnetic protection for heavy-duty electrical systems. It mounts into Siemens P1, P2, and P3 panelboards, as well as compatible switchboards and motor control centers.Specifications
| Brand | Siemens |
|---|---|
| Part Number | CFD63B150L |
| Series | CFD6 |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480VAC, 100kA @ 600VAC, 50kA @ 500VDC |
| 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 |
|---|---|
| Accessories | Line and Load Lugs (Factory Installed) |
| 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
7 answersIs the Siemens CFD63B150L a current-limiting circuit breaker?
Yes, the CFD63B150L is a current-limiting, fuseless molded case circuit breaker. It provides an ultra-high interrupting capacity of 200kA at 480VAC and 100kA at 600VAC without requiring external fuses.
What is the adjustable magnetic trip range for this 150A CFD6 breaker?
The adjustable magnetic trip range for the 150A CFD63B150L is 800A to 1500A. The thermal trip is fixed at 150A.
Which standalone enclosures are compatible with the CFD63B150L?
This FD-frame breaker can be installed in Siemens F6N1S (NEMA 1 surface mount), F6N1F (NEMA 1 flush mount), and F6N3R (NEMA 3R outdoor) circuit breaker enclosures.
What is the difference between the CFD63B150L and the FD63B150 or HFD63B150?
All three are 150A, 3-pole FD-frame breakers, but they have different interrupting ratings. The FD63B150 is standard interrupting (35kA at 480V), the HFD63B150 is high interrupting (65kA at 480V), and the CFD63B150L is the current-limiting version with an ultra-high 200kA at 480V rating.
Does the CFD63B150L require a mounting kit for panelboards?
Yes. Because the CFD63B150L is a unit-mount breaker, installing it into a Siemens P1, P2, or P3 panelboard requires the appropriate strap kit or mounting hardware specific to the panelboard type.
What is the safety benefit of a current-limiting breaker like the CFD63B150L?
Current-limiting breakers clear severe faults extremely fast, reducing the peak let-through current and thermal energy that reaches downstream equipment. This minimizes potential damage to the electrical system during a short circuit.
What does the "L" suffix mean in the CFD63B150L catalog number?
The "L" suffix indicates that the circuit breaker is factory-assembled with line and load lugs. Breakers without this suffix are typically supplied as the frame and trip unit only, requiring lugs to be purchased separately.
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