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Blue Sea Systems 187-Series Surface Mount Circuit Breaker 40A

Blue Sea Systems ★ 4.0/5 · ItemOracle Score Mid-Range

$82 USD
Price subject to change
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Blue Sea Systems 7138 187-Series Circuit Breaker, Surface Mount, 40A

Combination switch and circuit breaker with waterproof construction and secure terminal hardware. Customers note easy wiring and mounting, plus reliable performance in harsh conditions

Highlights

  • trip-free design for safety
  • fully waterproof construction
  • single-lever operation

Pros

  • combines switching and protection
  • waterproof construction
  • recessed mounting holes for clean appearance
  • ample space around terminals for heavy-gauge wires
  • secure 5/16 M8 terminals

Cons

  • price point
  • some note it acts as a higher-amp breaker in practice

Best For

  • marine trolling motors
  • heavy-gauge wiring installations
  • saltwater environments
  • surface-mounted electrical panels
  • situations requiring push-to-disconnect safety
  • fault protection with accessible switch

Features

  • Combines switching and circuit protection in a single device with a single-lever operation
  • Trip Free design prevents holding switch ON during faults for enhanced safety
  • Fully waterproof Construction with recessed mounting holes for a clean appearance
  • Accommodates heavy-gauge wire lugs with robust 5/16 M8 terminals for secure connections
  • Ignition-protected for safe installation aboard gasoline-powered boats per SAE J1171

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