Designed for robust three-phase power distribution, the Siemens JXD63B200 is a 3-pole, 200A molded case circuit breaker. It provides essential long-time and instantaneous (LI) protection functions for commercial and industrial circuits. This unit-mount device integrates into Siemens Sentron panelboards, switchboards, and motor control centers. As a standard JD frame breaker, it requires separate lug kits for wire termination, allowing for customized connection setups.
This breaker is designed for unit mount installation in Siemens Sentron panelboards, switchboards, and motor control centers.
Is the JXD63B200 suitable for reverse feed applications?
Yes, because it is built with a non-interchangeable trip unit, this breaker is approved for reverse feeding per UL 489 standards.
Are lugs included with this circuit breaker?
No, standard JXD6 frame breakers are typically supplied without lugs. You will need to source compatible Sentron JD-frame lug kits separately to complete your wire terminations.
How is the trip unit adjusted on this breaker?
The thermal protection is fixed, but the instantaneous magnetic trip is adjustable. This allows you to fine-tune the short-circuit response using the adjustment dials on the face of the breaker.
What is the difference between the JXD63B200 and the JD63B200?
The JXD63B200 is manufactured with a factory-sealed, non-interchangeable trip unit. The JD63B200 belongs to the same JD frame family but features an interchangeable trip unit.
What does the LI trip function on this breaker provide?
The LI designation indicates that the thermal magnetic trip unit provides Long-Time protection for standard overloads and Instantaneous protection for short circuits.
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