The Blue Sea Systems 187-Series 50 Amp Thermal Circuit Breaker is a panel-mount device that combines switching and circuit protection in one unit. Designed for durability and safety, this waterproof breaker features a trip-free design that prevents it from being held on during a fault condition. It is ignition protected, making it safe for installation on gasoline-powered boats, and includes a clear, single-lever operation with visual trip status indication.
- PN: 7039
- Circuit Breaker Class: Type III, switchable manual reset
- Voltage Rating: 48V DC maximum
- Interrupt Rating: 5,000A at 12V DC, 3,000A at 24V DC, and 1,500A at 42V DC
- Construction: Thermoset polyester case with robust 5/16" terminal studs
- Safety: Meets SAE J1171 external ignition protection requirements
- Operating Temperature Range: -25°C to +82°C
- Installation: Features a round, self-trimming case for easy installation with standard hole saws and recessed mounting holes for a clean finish
- Regulatory note: This product contains chemicals, including di(2-ethylhexyl)phthalate (DEHP), known to the State of California to cause cancer, birth defects, or other reproductive harm.
Product facts
- CT SKU
- CT-100421
- Model / MPN
- 7039
- UPC / GTIN
- 632085170394
- Package dimensions
- 2" X 4" X 8"
- Package weight
- 0.5 lb
- Specifications
- Amperage = 50a
Fit-sensitive item: confirm measurements, model numbers, and manufacturer details before ordering. Tug & Tow does not guarantee universal compatibility from a product page alone.
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Shipping & returns
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Fit & compatibility
Fit & compatibility
Review the product title, description, images, dimensions, part numbers, and manufacturer details before purchase. For fit-sensitive items, confirm compatibility with your boat, RV, trailer, vehicle, or equipment.
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Need help choosing?
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