Product Overview
Blue Sea Systems PowerPost Plus 3/8" Marine Circuit Breaker

Command your boat's electrical system with the confidence it deserves. The Blue Sea Systems PowerPost Plus 3/8" Marine Circuit Breaker (2103) isn't just a component; it's the cornerstone of a reliable, high-amperage connection. Securely connect up to four heavy-duty cables, leveraging its robust 150-ampere tin-plated copper busbar for even the smallest auxiliary wires. Unlike traditional systems, current bypasses the main stud, eliminating the need for an amperage rating and simplifying installation. Engineered with a durable insulator and protective red rubber cable cap, this PowerPost ensures a safe and efficient power distribution, even in the harshest marine environments. Upgrade your vessel's electrical system today with the performance and peace of mind Blue Sea Systems delivers.
Key Features
- Connects up to four high amperage cables securely
- Current does not flow through the main stud (no amperage rating needed)
- Includes insulator and red rubber cable cap
- 150 Ampere tin plated copper bus allows small wire connections
- 3/8" x 3/4" stud dimensions
- 48 Volts DC maximum
Specifications
- manufacturer: Blue Sea Systems
- model_number: 2103
- mpn: 2103
- name: PowerPost Plus 3/8 inch Marine Circuit Breaker
- stud_dimensions: 3/8" x 3/4"
- maximum_voltage: 48 Volts DC
- busbar_amperage: 150 Ampere
- busbar_material: tin plated copper
- terminal_screws: 8ea. #8
- upc: 632085021030
The Captain's Take
Years at sea have taught me one thing: reliable power is paramount. Don't skimp on your circuit breakers. The Blue Sea PowerPost Plus makes wiring clean, safe, and easy. Its clever design – keeping the current off the main stud – means less worry about exceeding amperage limits. Trust me, a smooth electrical system means a smoother trip.