Home » Shop » Eaton Bussmann 187 Series Marine-Rated Surface Mount Circuit Breaker – 90A

Eaton Bussmann 187 Series Marine-Rated Surface Mount Circuit Breaker – 90A


Eaton 187 Series 90A MRCB marine rated circuit breaker. Typically used in DC power systems in marine applications (as a main or branch circuit breaker), truck and bus systems, RV systems, add-on protection for accessories, lift gates, etc. External ignition protected and weatherproof.

SKU: 187090F-03-1 Categories: , , , , ,
Range Discount
1 - 4 $50.99
5 - 9 $48.25
10 - 49 $46.50
50 - 99 $44.50
100 + $42.50

Series 187 Manual Reset Circuit Breakers With On/Off Switch Function.

  • Combines switching and circuit protection into a single device
  • Clear, single lever operation
  • ‘Trip Free’ design cannot be held ‘ON’ during fault current condition
  • Waterproof – IP66
  • Recessed mounting holes for clean appearance
  • Large Clearance around terminal studs accept heavy gauge wire lugs
  • Robust 5/16 M8 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
  • Meets SAE J1171 external ignition protection requirements

Equivalent Models

Blue Sea Systems 7143-BSS
Specification Heading Specification Detail
Length 3.45 in
Width 2.32 in
Height 1.77 in
Weight 0.5 lbs
Current Rating 90A
Voltage Rating 48V DC
Interrupt Rating 5,000A @ 14V DC | 3,000A @ 28V DC | 1,500A @ 48V DC
Operating Temperature Range –40°F (–40°C) to 185°F (85°C)
Materials UL-rated 94V0 thermoset plastic
Terminal Stud 5/16-18 threaded studs
Terminal Stud Torque 75 in-lbs (8.5Ntm) max
Ingress Protection IP66
Compliances ABYC E-11; CE; SAE J1171 (ignition protected)
Mounting Type Surface Mount


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Scroll to Top