Siemens SENTRON 5SJ4 3-Pole Miniature Circuit Breaker, C-Curve, 16 A, 6 kA, 400 V AC 5SJ43167HG42

Miniature circuit breaker from the Siemens SENTRON 5SJ4 series, engineered for reliable protection of electrical circuits in residential and commercial installations. With a 3-pole configuration, C tripping characteristic, and 16 A rated current, this MCB offers robust overcurrent and short-circuit protection with a switching capacity of 6 kA at 400 V AC.

Advantages

The 5SJ4316-7HG42 provides precise and fast tripping on overload and short-circuit conditions, ensuring safety for downstream equipment and wiring. Its compact DIN rail mounting and screw terminals allow for quick installation and secure connection of conductors up to 35 mm². The device is designed for high endurance with 10,000 electrical and mechanical switching cycles, ensuring long-term reliability.

Suitable for

• Protection of three-phase circuits in distribution boards
• Residential and commercial building installations
• Control and automation systems requiring C-curve tripping
• Circuits with moderate inrush currents such as motors and lighting

Key specifications

• Series: SENTRON 5SJ4
• Number of poles: 3
• Tripping characteristic: C
• Rated current: 16 A
• Rated switching capacity: 6 kA
• Rated voltage: 400 V AC
• Frequency: 50/60 Hz
• Mounting: DIN rail
• Terminal capacity: 0.75 – 35 mm² (solid and stranded)
• Degree of protection: IP20 (terminals), IP40 (with cover)
• Modular width: 3 modules (54 mm)

Recommendations

For optimal performance, install this MCB in a suitable distribution board with proper ventilation. Ensure that the connected load does not exceed 80% of the rated current for continuous operation. Use appropriate screwdrivers and torque settings for terminal connections.