Engineered for demanding industrial applications, the Siemens FXD63B150 is a 3-pole, 150A molded case circuit breaker from the Sentron family. It provides robust thermal-magnetic protection with long-time and instantaneous (LI) trip functions to clear overloads and short circuits. This FD frame breaker mounts into Siemens P1, P2, and P3 panelboards, switchboards, and motor control centers. It serves as a replacement for legacy F-Frame breakers. Lugs are not included. Rated 35kAIC at 480V.
What does the "B" in the catalog number FXD63B150 indicate?
The "B" in the catalog number indicates that this circuit breaker is supplied without lugs. You must purchase line and load lugs separately to match your specific wire size and conductor material.
Which lug kits are compatible with the FXD63B150 circuit breaker?
Common lug kits for this Sentron FD-frame breaker include the TA1FD350A for aluminum or copper wire, and the TC1FD350 for copper wire only. Always verify that the selected lug kit supports your required wire gauge.
What is the adjustable magnetic trip range for this 150A breaker?
The magnetic instantaneous trip function on the FXD63B150 is adjustable from 800A to 1500A. The thermal protection remains fixed at 150A.
Is the FXD63B150 circuit breaker suitable for reverse feed applications?
Yes, this Sentron circuit breaker is UL listed for reverse feeding. It can be safely back-fed in electrical systems where permitted by the National Electrical Code.
Is this circuit breaker HACR rated?
Yes, the FXD63B150 carries a HACR rating, meaning it is certified for safe use with heating, air conditioning, and refrigeration equipment motor loads.
Can the FXD63B150 replace legacy Siemens circuit breakers?
Yes, Sentron FD-frame breakers like the FXD63B150 are frequently used to replace older legacy Siemens and I-T-E F-frame circuit breakers. Ensure you check your existing mounting hardware and enclosure clearances prior to retrofitting.
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Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.