GE Spectra RMS Molded Circuit Breaker For Sale

Spectra RMS molded case circuit breakers (MCCBs), originally manufactured by GE and currently supported by ABB, are heavy-duty, solid-state devices known for their digital true-RMS sensing. Because they are designed with field-installable rating plugs and universal accessories, they can easily handle complex industrial and commercial power needs. [1, 2, 3, 4, 5]

Key Features & Capabilities

• True RMS Sensing: Accurately measures sinusoidal and non-sinusoidal currents, preventing nuisance trips caused by loads like welders, SCR drives, and computers. [1, 2]

• Interchangeable Rating Plugs: Allows users to easily establish or change the ampere rating of a breaker without replacing the entire trip unit. [1, 2]

• Universal Accessories: Internal accessories like shunt trips, auxiliary switches, and bell alarms are interchangeable across different frame sizes, minimizing necessary inventory. [1]

• Adjustable Trip Units: Long-time, short-time, and tracking instantaneous protections are standard. [1, 2]

Primary Frame Sizes & Specs

The Spectra RMS family is available in four main sizes ranging from 7 to 1200 amperes, with interrupting ratings up to 200 kA at 240V AC: [1, 2]

• SE150: Up to 150 Amps

• SF250: Up to 250 Amps

• SG600: Up to 600 Amps

• SK1200: Up to 1200 Amps [1, 2, 3, 4, 5]

Lifecycle & Replacement

The GE Spectra RMS line has been officially designated as obsolete/limited life cycle by the manufacturer. For new installations or total retrofits, ABB now directs users to their SACE Tmax XT line of MCCBs. You can review the transition details on the Spectra RMS Electronic Trip - Previous Generation Circuit Breakers page.