Engineered for industrial environments, the Siemens SCND69120ANT is a 3-pole, 1200A electronic trip molded case circuit breaker. It utilizes a solid-state trip unit to deliver accurate current limiting protection. This ND frame breaker bolts into Siemens Sentron panelboards, switchboards, and motor control centers. Operating with a 65kAIC rating at 480VAC, it features adjustable Long-Time, Short-Time, and Instantaneous (LSI) functions to ensure optimal coordination with downstream devices.
Current Limiting, HACR Rated, Non-Interchangeable Trip, Reverse Feed
Product FAQs
5 answers
What does the LSI trip function provide on the SCND69120ANT?
The LSI designation means the electronic trip unit features adjustable Long-Time, Short-Time, and Instantaneous pickup and delay settings. This adjustability allows for precise selective coordination with downstream and upstream protective devices in your distribution system.
Does the SCND69120ANT provide ground fault protection?
No. This breaker features an LSI trip unit, which does not include ground fault sensing. If your application requires equipment ground fault protection, you will need an LSIG variant, such as catalog number SCND69120ANGT.
Does the SCND69120ANT require a specific mounting hardware kit?
While the breaker features a standard bolt-on connection for Siemens busbars, mounting hardware and unmounted wire connectors are typically sold separately depending on your specific panelboard or switchboard configuration.
Can I install internal accessories like a shunt trip in the SCND69120ANT?
Yes. The Sentron ND frame supports field-installable internal accessories, including shunt trips, auxiliary switches, and alarm switches. Siemens recommends that accessory installation be completed before the circuit breaker is mounted and connected.
Can the SCND69120ANT replace older ND frame breakers?
Yes. As part of the Sentron ND frame family, this solid-state electronic trip breaker shares the same physical dimensions and mounting footprint as standard ND, HND, and CND frame breakers. This allows for direct upgrades in existing Siemens equipment.
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