ID
1002161
$ 152.60
1-2 weeks delivery time
-
+
The Blue Sea 7139 187-Series Circuit Breaker is a 50A surface-mount Type III breaker for 48V DC systems, combining switching and circuit protection in a single waterproof unit. It features a thermally responsive bi-metal blade and trip-free manual reset lever, with 5/16″-18 (M8) stud terminals for high-torque cable connections. Ignition protected and rated up to 5000A @ 14V DC interrupt capacity. Weight: 0.58 lb (0.26 kg).
- Description
- Ask a Question
-
Blue Sea 7139 – 187-Series Surface Mount Circuit Breaker 50A, 48V DC, Type III Manual Reset
The Blue Sea 7139 is a 187-Series surface mount circuit breaker rated at 50A for systems up to 48V DC. It combines switching and circuit protection in one waterproof device for marine and vehicle DC electrical installations.
The breaker uses a thermally responsive bi-metal blade and a trip-free manual reset lever that cannot be held ON during a fault condition. The ignition-protected and weather-resistant housing allows safe installation aboard gasoline powered boats and in exposed locations.
Key Features
- 187-Series circuit breaker, surface mount
- 50A rating, up to 48V DC
- Switching and circuit protection in one device
- Type III – switchable/manual reset, trip-free
- Waterproof construction
- Ignition protected for marine use
- Clear single lever operation with trip indication
- Recessed mounting holes for clean installation
- Large terminal clearance for heavy gauge wire lugs
- 5/16″ (M8) terminal studs for high-torque connections
Technical Specifications
Product Number 7139 Series 187-Series Amperage 50A Maximum Voltage 48V DC Mounting Surface Mount Breaker Type Thermally responsive bi-metal blade Breaker Class Type III – switchable/manual reset – trip free Interrupt Capacity 5000A @ 14VDC / 3000A @ 28VDC / 1500A @ 48VDC Terminal Stud Size 5/16″ - 18 (M8) Terminal Stud Torque 75 in-lb (8.47 Nm) Mounting Hole Accept #10 (M5) screw Operating Temperature -40°C to +85°C Case Material Thermoset Polyester Weight 0.58 lb (0.26 kg)
Standards & Protection
- CE Marked
- Ignition Protected
- IP66
- SAE J1171
Note: Not intended for use as a switch where high inrush currents are expected.
-
Popular products
-
1-2 weeks delivery time$ 152.60 -
1-2 weeks delivery time$ 144.80 -
1-2 weeks delivery time$ 144.80 -
1-2 weeks delivery time$ 152.60 -
1-2 weeks delivery time$ 152.60 -
1-2 weeks delivery time$ 152.60 -
1-2 weeks delivery time$ 152.60 -
1-2 weeks delivery time$ 152.60 -
1-2 weeks delivery time$ 144.73 -
1-2 weeks delivery time$ 152.60