Delivering reliable overcurrent protection, the Siemens HFD63B225 is a 3-pole, 225A molded case circuit breaker for commercial and industrial power systems. It mounts into Siemens Sentron P1, P2, and P3 panelboards, as well as switchboards and motor control centers. This FD frame breaker offers a high interrupting rating of 65 kAIC at 480VAC and features an interchangeable thermal magnetic trip unit. Note that this model is replaced by the 3VA5222-6EC31-0AA0, which requires a retrofit kit.
HACR Rated, High Interrupting Capacity, Interchangeable Trip Unit
Product FAQs
5 answers
What types of equipment is the Siemens HFD63B225 designed to fit?
The HFD63B225 mounts into Siemens Sentron P1, P2, and P3 panelboards, as well as switchboards and motor control centers that accommodate FD frame molded case circuit breakers.
How does the HFD6 series differ from standard FD frame breakers?
The HFD6 prefix designates a high-interrupting capacity frame. It delivers a 65 kAIC rating at 480V AC, making it suitable for demanding feeder-level distribution systems that require higher fault current protection than standard frames provide.
Does the HFD63B225 come with line and load lugs?
Yes, this complete breaker assembly includes standard TA1FD350A lugs on both the line and load sides. These lugs accept 6 AWG to 350 kcmil copper or aluminum conductors.
Are the trip units on the HFD63B225 fixed or interchangeable?
The HFD63B225 features an interchangeable thermal-magnetic trip unit. This allows electricians to modify or replace the trip unit in the field without needing to replace the entire breaker frame.
Can the Siemens HFD63B225 replace older ITE circuit breakers?
Yes, Siemens acquired ITE and maintained the same frame dimensions. The current Siemens HFD63B225 directly replaces the legacy ITE HFD63B225 catalog number and fits the same panelboard mounting hardware.
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