Description
187 – Series Thermal Circuit Breakers – Surface Mount
70 Amp Circuit Breaker
PN:7141
Features:
- Combines switching and circuit protection into a single device
- All components meet SAE J1171 external ignition protection requirements
- Clear, single lever operation
- “Trip Free” design cannot be held “ON” during fault current condition
- Waterproof
- Recessed mounting holes for clean appearance
- Large clearance around terminal studs accept heavy gauge wire lugs
- Robust 5/16 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

Specifications:
- Amperage: 70a
- Box Dimensions: 3″H x 5″W x 8″L WT: 0.6 lbs
- UPC: 632085071417
![Blue Sea 7476 C – Series Flat Circuit Breaker, Single and Double Pole – 200 Amp [7476]](https://www.micrometerx.com/wp-content/uploads/2025/8/1756622725/blue-sea-7476-c-series-flat-circuit-breaker-single-and-double-pole-200-amp-7476.webp)
![Blue Sea 7406 Single Pole Small Case 2 Flat Rocker Circuit Breaker – 30 Amp [7406]](https://www.micrometerx.com/wp-content/uploads/2025/8/1756622725/blue-sea-7406-single-pole-small-case-2-flat-rocker-circuit-breaker-30-amp-7406.webp)
![Blue Sea 7355 C-Series Toggle Single Pole – 30A [7355]](https://www.micrometerx.com/wp-content/uploads/2025/8/1756622730/blue-sea-7355-c-series-toggle-single-pole-30a-7355.webp)
![Blue Sea 8087 8 Position DC C-Series Panel – Blank [8087]](https://www.micrometerx.com/wp-content/uploads/2025/8/1756622725/blue-sea-8087-8-position-dc-c-series-panel-blank-8087.webp)
![Blue Sea 7210 AC/DC Single Pole Magnetic World Circuit Breaker – 15AMP [7210]](https://www.micrometerx.com/wp-content/uploads/2025/8/1756622746/blue-sea-7210-ac-dc-single-pole-magnetic-world-circuit-breaker-15amp-7210.webp)
![Blue Sea 7038 187 – Series Thermal Circuit Breaker – 40A [7038]](https://www.micrometerx.com/wp-content/uploads/2025/8/1756622735/blue-sea-7038-187-series-thermal-circuit-breaker-40a-7038.webp)
![Blue Sea 7146 187 – Series Thermal Circuit Breaker – 120Amp [7146]](https://www.micrometerx.com/wp-content/uploads/2025/8/1756622735/blue-sea-7146-187-series-thermal-circuit-breaker-120amp-7146.webp)
![Blue Sea 7229 AC / DC Single Pole Magnetic World Circuit Breaker – 50 Amp [7229]](https://www.micrometerx.com/wp-content/uploads/2025/8/1756622730/blue-sea-7229-ac-dc-single-pole-magnetic-world-circuit-breaker-50-amp-7229.webp)