Supplying high-capacity protection, the Siemens HND63B100 is a 3-pole, 1000A molded case circuit breaker. This Sentron series ND frame breaker operates at up to 600VAC, making it suitable for heavy industrial power systems. It installs into Siemens P4 and P5 panelboards, switchboards, and Sentron enclosures. The unit mount breaker includes TA4N8500 line and load lugs, accepting 250-500 kcmil wire. Rated 65kAIC at 480V, it features an interchangeable thermal-magnetic trip unit with LI functions.
HACR Rated, High Interrupting Capacity, Interchangeable Trip Unit
Product FAQs
8 answers
What enclosures and panelboards accept the HND63B100?
This ND Frame breaker is designed to mount in Siemens P4 and P5 panelboards, Siemens switchboards, and Siemens Sentron enclosures.
What wire size and material are supported by the standard lugs on this breaker?
The standard feed-thru lugs accept four 250 to 500 kcmil copper or aluminum (Cu/Al) conductors per phase.
How does the adjustable magnetic trip function work on the HND63B100?
This thermal magnetic breaker features a fixed thermal element for long-time overload protection and an adjustable magnetic element. The adjustable magnetic setting allows electricians to fine-tune the instantaneous short-circuit trip response to coordinate with other devices in the distribution system.
Can this breaker be used in DC power systems?
Yes, the HND63B100 is rated for use in DC systems up to 500VDC, providing an interrupting capacity of 50kAIC at both 250VDC and 500VDC.
What is the difference between the HND63B100 and the standard ND63B100?
The HND63B100 is the high-interrupting version of the 1000A ND frame, offering 65kAIC at 480VAC. The standard ND63B100 has a lower interrupting capacity, while the CND63B100 provides an even higher 100kAIC rating at 480VAC.
Does this breaker require a separate mounting kit for panelboard installation?
Yes, when installing this unit-mount breaker into Siemens P4 or P5 panelboards, a specific strap kit or mounting hardware kit is required. The breaker itself is supplied with standard feed-thru lugs.
What type of protection does the LI trip function provide?
The LI designation indicates that the trip unit provides Long-Time (L) protection against sustained overloads and Instantaneous (I) protection against severe short circuits.
Can the HND63B100 replace older I-T-E 1000A ND frame breakers?
Yes, Siemens Sentron ND frame breakers are physically interchangeable with many legacy I-T-E ND frame breakers, making them suitable replacements in existing switchboards and motor control centers.
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