Blue Sea 7239 40A Circuit Breaker

Blue Sea 7239 — 40A AA2 Circuit Breaker (Black)

40A surface-mount thermal circuit breaker. Sized for higher-current circuits — DC-DC charger outputs, small inverter trunk lines, large accessory loads.

Key Features

• 40A rating — 40A DC-DC chargers, small 500W inverters, heavy accessory circuits
• Push-to-reset button
• Surface-mount with panel-mount option
• Marine-rated, UL-recognized
• Black housing — matches dark electrical panels

Planning your DC panel? Use our free System Build Helper to plan individual circuit protection.

Pairs Well With

• Blue Sea 7748 SafetyHub 150 Fuse Block
• Victron Orion XS 50A DC-DC Charger (40A works for inputs)
• Renogy 40A DC-DC MPPT Charger