Blue Sea 7038  187 - Series Thermal Circuit Breaker  -  40A [7038]
SKU: 84427519942

Blue Sea 7038 187 - Series Thermal Circuit Breaker - 40A [7038]

Sale price$80.99 Regular price$89.99
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Description

Blue Sea 7038 187 - Series Thermal Circuit Breaker - 40A [7038]187 Series Thermal Circuit Breakers Panel Mount 40 Amp Circuit Breaker PN: 7038 Features: Combines switching and circuit protection into a single device All components meet SAE J1171 external ignition protection requirements Clear, single lever operation "Trip Free" design cannot be held "ON" during fault current condition Waterproof Recessed mounting holes for clean appearance Self trimming case eliminates the need for mounting panels or trim bezels

187 - Series Thermal Circuit Breakers - Panel Mount

40 Amp Circuit Breaker

PN:  7038

Features:

  • Combines switching and circuit protection into a single device
  • All components meet SAE J1171 external ignition protection requirements
  • Clear, single lever operation
  • "Trip Free" design cannot be held "ON" during fault current condition
  • Waterproof
  • Recessed mounting holes for clean appearance
  • Self-trimming case eliminates the need for mounting panels or trim bezels
  • Round case permits easy installation with standard sized hole saw
  • Large clearance around terminal studs accept heavy gauge wire lugs
  • Robust 5/16 terminals provide high torque connections
  • Large lever with vertical/horizontal orientation provides indication of trip status
  • Ignition protected - safe for installation aboard gasoline powered boats

Specifications  
Circuit Breaker Class: Type III - Switchable / Manual Reset - Trip Free
Type: Thermally Responsive Bi-Metal Blade
Case Material: Thermoset Polyester
Voltage Rating: 48 Volts DC Maximum
Interrupt Rating: 5,000 Amperes @12 Volts DC
  3,000 Amperes @24 Volts DC
  1,500 Amperes @42 Volts DC
Operating Temperature Range: -25C° to +82C°

WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Specifications:

  • Amperage: 40a
  • Box Dimensions: 3"H x 5"W x 7"L WT: 0.5 lbs
  • UPC: 632085170387
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 84427519942

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A
Verified Purchase
Amazon Customer
Birmingham, US
★★★★★ 5
Be safe and always calculate the gauge wire are you need, don’t cut corners.
Size: 4 Gauge 10FT
Good quality solid copper 4 Gauge wires in red and black. Avoid aluminum wiring that has copper plating so looks like solid copper but can be dangerous if used in heavy load applications. Copper is expensive but required if amperage is high.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 8, 2026
J
Verified Purchase
Jenaro Garcia
Massapequa, US
★★★★★ 5
Good
Size: 1/0 Gauge 10FT
Good item
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
H
Verified Purchase
Hunter
West Palm Beach, US
★★★★★ 5
Works no issues
Size: 8 Gauge 10FT
Works no issues
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2026
T
Verified Purchase
TJ Helser
Fort Morgan, US
★★★★★ 4
Durable insulation and pure copper not that cca bs
Size: 1/0 Gauge 5FT
Good quality. Solid copper, not that cca bs. Stiff and durable insulation. Used for big 3 car audio grounds on high output alternator. Great results. Will mention that it’s not as thick as some other brands but not by much. Terminals still crimped tightly with 1/0 gauge
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 11, 2026
C
Verified Purchase
chris
Dallas, US
★★★★★ 5
Quality wire and true specs
Size: 8 Gauge 10FT
Good quality car audio power wire.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026

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