Belonging to the Siemens Sentron family, the HJD63B225L 225A, 3-pole molded case circuit breaker handles demanding commercial and industrial applications. It delivers reliable thermal-magnetic protection with long-time and instantaneous (LI) functions. This JD-frame unit mounts into Siemens P4 and P5 panelboards, SB switchboards, and motor control centers. Rated for 65 kAIC at 480VAC, it features an interchangeable trip unit, adjustable magnetic settings, and includes necessary lugs.
HACR Rated, High Interrupting Capacity, Interchangeable Trip Unit
Product FAQs
8 answers
What panelboards accept the HJD63B225L circuit breaker?
This JD-frame breaker mounts into Siemens P4 and P5 panelboards, SB switchboards, motor control centers, and legacy Sentron panelboards.
What does the "L" suffix in the HJD63B225L part number mean?
The "L" indicates that the breaker comes completely assembled with factory-installed line and load side lugs.
What is the difference between the standard JD63B225L and the HJD63B225L?
The HJD63B225L is the high-interrupting capacity version. It provides a 65kA short-circuit rating at 480VAC, whereas the standard JD63B225L is rated for 35kA at 480VAC.
Are the trip settings on this breaker adjustable?
Yes, it features a thermal-magnetic trip unit with a fixed thermal setting for overloads and an adjustable magnetic setting for instantaneous short-circuit protection.
What wire sizes do the included lugs accept?
The factory-installed lugs accommodate copper or aluminum conductors ranging from 3/0 AWG to 500 kcmil.
Does this breaker plug directly onto the panelboard bus?
No, the HJD63B225L is a unit-mount, feed-thru circuit breaker. It bolts into the enclosure and requires wired connections at both the line and load lugs.
Is the trip unit on the HJD63B225L interchangeable?
Yes, this breaker features an interchangeable trip unit design. This allows the thermal-magnetic trip unit to be removed or upgraded without having to replace the entire JD frame.
Can I use this to replace an older Sentron HJD6 series breaker?
Yes, the HJD63B225L is a direct replacement for legacy 225A, 3-pole HJD6 breakers used in older Siemens Sentron panelboards and switchboards.
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