Marine Thermal Circuit Breaker with LED Indicator – 60A to 300A

Reliable protection in DC 12V / 24V / 48V

This single-pole thermal circuit breaker with an LED indicator effectively protects your DC electrical circuits against overcurrent and short circuits. With a manual reset and IP66 sealing, it is purpose-built to secure your marine electrical installation and safeguard your electrical equipment from failures.

Operation and benefits

Automatic protection principle

When an overcurrent is detected, the automatic trip instantly cuts power. The integrated LED on the button then lights up, clearly indicating the open state. Reset is performed manually via the accessible reset button.

LED visual indicator (ON/OFF)

• LED off: circuit active, normal operation
• LED on: breaker tripped, circuit open
• Reset button: manual circuit restoration

Reinforced marine construction

• Stainless-steel studs M6 or M10 depending on amperage
• IP66 sealing: protection against fresh and salt water
• Operating temperature: −32°C to +82°C
• Ignition Protect ISO 8846: suitable for gasoline engine compartments

Recommended onboard applications by amperage

Installation versatility

Usage environments

• Pleasure boats: bilge, engine compartment, switch panel
• Professional vessels: marine industrial installations
• RVs and 4×4 vehicles: high-current auxiliary circuits
• Solar installations: protection between batteries and inverters
• Mobile equipment: platforms, construction machinery

Comparison with other protections

Thermal breaker vs. battery switch – A battery switch requires preventive manual action, whereas a thermal breaker trips automatically during overcurrent and provides LED visual diagnostics.

Thermal breaker vs. RCD – An RCD protects people against leakage currents in single-phase 230V AC systems, while this single-pole thermal breaker protects equipment against overloads in 12/24/48V DC.

Thermal breaker vs. contactor – A contactor remotely opens/closes a circuit; a thermal breaker automatically protects against overcurrent with local manual reset.

Thermal breaker vs. fuse – Unlike a fuse that melts, the breaker is manually reset with no part replacement. Cost-effective and practical at sea.

Why choose this thermal breaker

Enhanced safety

Automatic overload protection with immediate visual feedback. Ideal for unattended or hard-to-reach areas such as bilge compartments.

Marine-grade reliability

IP66 waterproof build with corrosion-resistant stainless studs. Designed for the harshest marine environments.

Ease of use

Simple push-button reset, LED diagnostics, quick drop-in to existing circuits.

Operating economy

No consumable parts unlike fuses. Quick intervention after a trip.

Complementary products

Flush-mount version available: For seamless panel integration, see our LED thermal breaker 60A–300A (flush mount) with the same performance.

Compact versions: For tight spaces, check our mini thermal breakers 30–60A, surface-mount or flush (no LED).

Professional protection for marine and industrial installations — Available from 60A to 300A