Built for demanding industrial environments, the Siemens HLMXD63B800 is an 800A, 3-pole molded case circuit breaker featuring a rugged LMD frame. It is equipped with a non-interchangeable thermal-magnetic trip unit that provides reliable long-time and adjustable instantaneous protection. This bolt-on breaker is engineered to fit Siemens Sentron Type P4 and P5 panelboards. Delivering a high interrupting capacity of 65 kAIC at 480VAC, it is HACR rated and supports reverse feed installations.
HACR Rated, Reverse Feed, High Interrupting Capacity, Non-Interchangeable Trip
Product FAQs
6 answers
Which panelboards and switchboards accept the HLMXD63B800?
This LMD frame breaker is designed for use in Siemens Sentron Type P4 and P5 panelboards, as well as Sentron switchboards and approved enclosures.
What is the difference between the LMXD63B800 and HLMXD63B800 catalog numbers?
The HLMXD63B800 is the high-interrupting capacity version, rated for 65kA at 480VAC. The LMXD63B800 is the standard capacity version, rated for 50kA at 480VAC.
Can the trip unit on the HLMXD63B800 be replaced or swapped?
No, the "X" in the HLMXD6 catalog prefix means this is a factory-assembled breaker with a non-interchangeable trip unit. If your application requires an interchangeable trip, you would need an HLMD6 frame.
Does the HLMXD63B800 come with terminal lugs included?
By default, this specific catalog number does not include lugs. Terminals must be ordered separately, or the breaker can be ordered with factory-installed lugs by using the "L" suffix on the part number.
Which lug kit is used with this 800A LMD frame breaker?
The standard lug kit for this frame is the TA3K500, which accommodates up to three 1/0 AWG to 500 kcmil copper or aluminum wires per phase.
What is the magnetic trip adjustment range for this breaker?
While the thermal overload rating is fixed at 800A, the instantaneous magnetic trip is adjustable and can be set between 3200A and 8000A.
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