Engineered for commercial and industrial power distribution, the ABB XT4NU3150FYJ000XXX serves as a 3-pole, 150A molded case circuit breaker. It utilizes advanced microprocessor-based sensing to deliver reliable overcurrent and short-circuit protection. This unit-mount MCCB installs into ABB ReliaGear neXT panelboards and ReliaGear SB switchboards. It also acts as a functional replacement for legacy T4N150TW breakers, simplifying facility upgrades.
Which panelboards are compatible with the XT4NU3150FYJ000XXX circuit breaker?
This breaker is designed for installation in ABB ReliaGear neXT power panelboards and ReliaGear SB switchboards.
How many X-spaces does this XT4 breaker occupy in a ReliaGear neXT panelboard?
An XT4 frame circuit breaker requires 3 X-spaces when installed in an ABB ReliaGear neXT power panelboard.
What does the N in the XT4N frame designation indicate?
The N indicates a normal interrupting capacity. For this specific frame, it provides a 25kAIC rating at 480VAC and a 65kAIC rating at 240VAC.
What does the LSI trip function provide on this ABB breaker?
LSI stands for Long-Time, Short-Time, and Instantaneous protection. This electronic trip unit allows you to adjust these parameters to coordinate with other breakers and protect against overloads and short circuits.
Is the trip unit on the XT4NU3150FYJ000XXX adjustable?
Yes, the electronic LSI trip unit is fully adjustable. This allows electricians to fine-tune the long-time, short-time, and instantaneous pickup and delay settings to meet specific coordination requirements.
Can the XT4NU3150FYJ000XXX replace legacy ABB breakers?
Yes, this Tmax XT4 breaker serves as a functional replacement for legacy ABB Tmax T4 series breakers, specifically the T4N150TW, simplifying facility upgrades.
Does this breaker include ground fault protection?
No, this breaker features an LSI trip unit, which covers Long-Time, Short-Time, and Instantaneous protection. It does not include the G function required for equipment ground fault protection.
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