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Siemens FXD63B175L Molded Case Circuit Breaker
- 175A
- 3 Pole
- Unit Mount
Siemens
FXD63B175L
Molded Case Circuit Breaker
Brand
Siemens
SKU
FXD63B175L
Quantity
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Siemens FXD63B175L - 175A 3 Pole Molded Case Circuit Breaker
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Description
Offering 175A of thermal-magnetic protection, the Siemens FXD63B175L is built for commercial and industrial use. It provides reliable long-time and instantaneous (LI) trip functions. This unit mount MCCB installs into Siemens P1 through P5 panelboards, SB switchboards, and motor control centers. It replaces legacy F-Frame breakers and includes lugs. Rated 65kAIC at 240V, it features fixed thermal and adjustable magnetic settings. It is HACR and reverse feed rated.Specifications
| Brand | Siemens |
|---|---|
| Part Number | FXD63B175L |
| Series | FXD6 |
| Amperage | 175A |
| 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 | FD |
|---|---|
| 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 |
| 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, Rotary Handle, Motor Operator |
|---|---|
| Accessories | Line & Load Lugs |
| Standards | CSA C22.2 No. 5, HACR Rated, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
6 answersWhich panelboards and switchboards are compatible with the FXD63B175L?
This FD frame molded case breaker is designed for use in Siemens P1, P2, P3, P4, and P5 panelboards, as well as SB switchboards and motor control centers (MCCs).
Does the FXD63B175L come with lugs installed?
Yes, the L suffix in the catalog number indicates that factory-installed line and load lugs are included. They support 6 AWG to 350 kcmil copper wire or 4 AWG to 350 kcmil aluminum wire.
Can I adjust the trip settings on this 175-amp breaker?
The FXD63B175L features a thermal-magnetic trip unit with fixed thermal protection and an adjustable magnetic (instantaneous) trip setting to fine-tune short-circuit response.
Is the trip unit on the FXD63B175L field-replaceable?
No, this breaker is constructed with a non-interchangeable trip unit. If the trip mechanism fails or a different rating is required, the entire breaker must be replaced.
Does this breaker plug into the busbar or bolt on?
The FXD63B175L is a unit-mount circuit breaker. It utilizes a feed-thru connection and must be bolted securely to the panel or switchboard chassis rather than plugged in.
What is the standard ambient temperature rating for this breaker?
The thermal-magnetic trip unit on the FXD63B175L is calibrated for a standard ambient operating temperature of 40 degrees Celsius (104 degrees Fahrenheit).
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