Delivering 100% continuous current capacity, this 1200A, 3-pole electronic trip MCCB is housed in the Sentron ND Frame for demanding industrial environments. It mounts into Siemens switchboards, motor control centers, and S5 or SPP panelboards. For modern upgrades, it is replaced by the 3VA Series via retrofit kit. Rated 35 kAIC at 480V, it features a Sensitrip solid-state trip unit with adjustable long-time, short-time, and instantaneous (LSI) settings.
Solid State Trip, 100% Rated, Interchangeable Trip Unit
Product FAQs
7 answers
What panelboards and switchboards are compatible with the SND69120ANTH?
This ND-frame breaker is designed for installation in Siemens Switchboards, Type S5 Power Panelboards, Type SPP Power Panelboards, and Motor Control Centers.
What does the "ANTH" suffix indicate in the Siemens catalog number?
The "ANT" designates an adjustable LSI (Long-Time, Short-Time, Instantaneous) Sensitrip electronic trip unit. The "H" indicates the breaker is 100 percent rated for continuous operation.
What does the "S" in the SND prefix stand for?
The "S" indicates that the breaker is equipped with a Sensitrip solid-state electronic trip unit, providing more precise protection than a standard thermal-magnetic trip mechanism.
How does the Sensitrip LSI function improve system protection?
The LSI electronic trip unit allows precise adjustments for Long-Time, Short-Time, and Instantaneous trip curves. This provides advanced coordination with downstream devices to isolate faults without tripping the main breaker.
Can the trip unit be swapped or upgraded on this breaker?
No. The "ND" frame designation in the SND69120ANTH catalog number indicates it has a non-interchangeable trip unit.
Is the SND69120ANTH suitable for reverse feed applications?
Yes. Because this breaker features a non-interchangeable electronic trip unit, it is acceptable for reverse connection applications under UL 489 standards.
Is this breaker HACR rated?
Yes, the SND69120ANTH is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment.
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