Part of the Spectra RMS family, this 225-amp molded case circuit breaker delivers advanced LSI electronic trip protection for commercial and industrial distribution systems. It installs into GE A-Series panelboards and compatible switchboards using a standard bolt-on configuration. Featuring true RMS sensing and a 100kAIC rating at 240V, it ensures precise coordination. Note that this legacy frame is replaced by the ABB Tmax XT4 series, which requires a retrofit kit for existing enclosures.
Is the SFLA36AT2225C manufactured by ABB or General Electric?
This breaker was originally developed by General Electric for the Spectra RMS series. Following ABB's acquisition of GE Industrial Solutions, the product is now manufactured and supported by ABB. The SFLA36AT2225C catalog number remains identical under both brands.
What does the LSI designation mean on this Spectra RMS breaker?
LSI indicates that the electronic solid-state trip unit features adjustable Long-Time, Short-Time, and Instantaneous trip functions. This allows electricians to fine-tune the breaker's time-current curve for optimal selective coordination within the electrical distribution system.
Can the SFLA36AT2225C be reverse fed in a panelboard?
Yes, GE Spectra RMS circuit breakers are suitable for reverse feed applications. The breaker does not have dedicated line or load markings, allowing incoming power to be connected to either the upper or lower terminals as dictated by the enclosure layout.
Can the 225-amp rating of the SFLA36AT2225C be changed in the field?
Yes. The breaker is built on the GE SF frame, which has a maximum capacity of 250 amps. It utilizes interchangeable, front-mounted rating plugs, allowing you to change the breaker's continuous current rating in the field without replacing the entire unit.
What is required to install this breaker into a GE Spectra Series panelboard?
While the SFLA36AT2225C is directly compatible with GE Spectra Series panelboards, it requires a separate equipment mounting hardware kit. Depending on whether you are performing a single or double branch installation, you will need a kit such as the AMC3GMFP or AMC6GBFP.
Does the SFLA36AT2225C feature true RMS current sensing?
Yes, the electronic trip unit uses digital sampling to calculate the true RMS value of both sinusoidal and non-sinusoidal currents. This ensures accurate overcurrent protection and prevents nuisance tripping when supplying non-linear loads like variable frequency drives, welders, or computer power supplies.
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