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Nov 06, 2025 - 08:41 AM
The 3119 is configured for standard 120/240V AC shore power with one blank position, making it versatile for general marine use. The breaker is a triple pole one which interrupts all three current carrying conductors. The 3120, by contrast, is tailored for 240V AC isolation transformers (e.g., in setups without neutral grounding), where there are only two current carrying conductors. It offers similar enclosure specs but optimized wiring for transformer isolation.
We’ve provided several answers to questions related to Blue Sea 3119 ELCI Main Surface Mount System Panel 50 Amp 120/240 VAC , see some other helpful Q&A related to this product.
Question: Can the 3119 accommodate additional circuit breakers?
Answer: The 3119 from Blue Sea Systems has empty slots for two single pole circuit breakers. The blank circuit spots are designed to fit A- and C- Series Flat Rocker breakers.
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