Circuit Breaker Surface Mount (30-150 AMP) — Durable DC Protection for Trucks, RVs, and Marine Systems

Powerful protection for critical DC circuits in harsh environments, the Circuit Breaker Surface Mount (30-150 AMP) is a heavy‑duty, single‑pole thermal breaker designed to safeguard auxiliary circuits, battery chargers, and DC audio systems in trucks, buses, recreational vehicles, and marine installations. Its purpose-built design ensures reliable interruption during faults while tolerating brief surges that would otherwise cause nuisance trips.

Why this breaker stands out

• Wide amperage range: protection adjustable from 30 to 150 A to match your exact circuit load and prevent over‑ or under‑protection.
• Thermal trip mechanism: responsive overload protection that minimizes false trips during short, harmless surges, while still interrupting faults quickly.
• Rugged construction: tin‑plated copper studs, brass rivets, and stainless steel locking nuts deliver durability and corrosion resistance in vibration‑prone, demanding environments.
• Surface‑mount convenience: F‑base surface‑mount design makes installation on flat panels, dashboards, or control centers straightforward, preserving wiring layouts in tight spaces.
• Environment‑ready variants: Series 184 and 185 are sealed for engine compartments and bilge areas, protecting circuitry from moisture, dust, and splashes.
• Comprehensive hardware: stud insulators are included on covered units to ensure reliable insulation and secure mounting.

Designed for serious installers who demand reliability in demanding settings, this surface‑mount circuit breaker combines purpose‑built sealing options, rugged hardware, and flexible mounting to deliver real‑world protection across a wide range of DC applications. Its compact form and robust mounting hardware keep wiring tidy and serviceable, even in vibration‑rich environments.

Ideal applications and use cases

• Auxiliary circuits in trucks, buses, and recreational vehicles — safeguarding lighting, power accessories, and charging lines.
• Marine electrical systems where DC protection is needed in engine compartments or bilge areas.
• Battery charging setups and DC audio systems that require dependable, automatic interruption during faults.

Whether you’re wiring a rugged off‑grid rig, upgrading a boat’s DC protection, or simplifying panel layouts in a busy control center, this circuit breaker delivers a clean, secure installation with long‑lasting performance in vibration‑prone environments. The sealed variants ensure dependable operation even in moisture‑prone zones, while the broad amperage range lets you tailor protection precisely to your network.

Specifications at a glance

• Amperage range: 30–150 A (adjustable within the specified band)
• Mounting: surface‑mount, F‑base design for flat panels
• Construction: tin‑plated copper studs, brass rivets, stainless steel locking nuts
• Protection: thermal trip with automatic interruption on fault
• Sealed variants: Series 184 and 185 available for engine compartments and bilge areas
• Hardware: includes stud insulators on covered units

For installers who demand reliable, real‑world protection in DC systems, this Circuit Breaker Surface Mount (30-150 AMP) from CBE combines a rugged build, flexible mounting, and environment‑ready options to keep critical circuits safe—from the highway to the marina.