Blue Sea 7136 187-Series Surface Mount Circuit Breaker, 30A vs E9 3/8" Studs 300 Amp Circuit Breaker with Manual Reset

Overall winner: Blue Sea 7136 187-Series Surface Mount Circuit Breaker, 30A

Key Differences

T Tocas E9 (A) offers a much higher current capacity (300 A) and a manual reset with 3/8" studs, making it better for high-current trolling motors or DC circuits and generally sits at a more affordable price point. Blue Sea 7136 (B) is a 30 A surface-mount unit that combines switch and protection, has a trip-free design and waterproof construction for marine electrical safety, and scores slightly higher in average user rating

Blue Sea 7136 187-Series Surface Mount Circuit Breaker, 30A

Blue Sea 7136 187-Series Surface Mount Circuit Breaker, 30A

Blue Sea Systems • ★ 4.1/5 • Mid-Range

Surface-mount circuit breaker with integrated switch and protection. Trip-free design and waterproof construction. Customers note ease of wiring and mounting, plus effective disconnectability

Pros

  • combines switch and protection
  • trip-free design enhances safety
  • waterproof construction
  • ample space for heavy-gauge wiring

Cons

  • price sensitivity among customers
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E9 3/8" Studs 300 Amp Circuit Breaker with Manual Reset

E9 3/8" Studs 300 Amp Circuit Breaker with Manual Reset

T Tocas • ★ 4.2/5 • Budget

Compact 300 A automotive circuit breaker with manual reset for up to 48 V DC. Features 3/8" stainless steel studs and protective insulator, meeting SAEJ1625/J1171 and UL1500 ratings. Users note solid construction and easy installation; durability reviews vary

Pros

  • manual reset function
  • high current capacity (300 A)
  • surface mount with 3/8" studs
  • protective stud insulator included

Cons

  • durability reports vary (some breakage/rust concerns)
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Head-to-Head

CriteriaWinner
Price T Tocas
Durability Tie
Versatility T Tocas
User Reviews Blue Sea Systems