Description
Blue Sea Systems C-Series Flat Rocker Circuit Breaker – Single Pole 20A – 7543
The Blue Sea Systems C-Series Flat Rocker Circuit Breaker – Single Pole 20A is designed for marine and mobile electrical circuit protection.
- Rocker actuator is flush in the “ON” position, eliminating the risk of accidential switching
- Color actuator indicates “OFF” position
- Provides overcurrent protection for inverters, bow thrusters, and windlasses
- Combines switching and circuit protection into a single device
- “Trip Free” — cannot be held closed after trip
For best results, match the fuse or breaker rating to the protected conductor and load, and confirm voltage, interrupt rating, mounting clearance, and terminal requirements before installation.
Specifications
- Amperage: 20A AC / 20A DC
- Actuator Style: Flat Rocker
- Poles: 1
- Maximum Voltage: 240V AC / 48V DC
- Circuit Breaker Type: Magnetic Hydraulic – trip-free
- Terminal Stud: 1/4-20 Tin-Plated Brass
- Terminal Stud Torque: 35 in-lb (3.95 N·m)
- Interrupt Capacity: 3,000A @ 120V AC / 3500A @ 240V AC / 5,000A @ 32V DC
- Minimum Operating Temperature: -40°C
- Maximum Operating Temperature: 85°C
- Mounting Screw: 6-32 Stainless Steel
- Mounting Screw Torque: 6 in-lb (0.68 N·m)
- Switching Cycles: 10,000
- Weight: 0.30 lb (0.14 kg)
- Breaker Body Envelope: 2.50 in D × 0.75 in W × 2.50 in H (63.5 mm × 19.1 mm × 63.5 mm)
- Manufacturer: Blue Sea Systems
- Part Number: 7543





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