Siemens SENTRON 5SY45047 MCB 4-Pole C 4A 10kA 230/400V

The Siemens SENTRON 5SY45047 is a 4-pole miniature circuit breaker (MCB) with a C tripping characteristic, rated for 4 A and a short-circuit breaking capacity of 10 kA at 230/400 V AC. It provides reliable protection for circuits against overload and short-circuit currents in residential and commercial installations.

Advantages

The thermal-magnetic trip unit ensures precise protection and long service life. The device is designed for DIN rail mounting and features screw terminals for secure connections. Its compact design saves space in distribution boards.

Suitable for

• Protection of lighting and socket circuits in residential buildings
• Control circuits in industrial applications
• Installations requiring a C characteristic for moderate inrush currents

Key specifications

• Number of poles: 4
• Tripping characteristic: C
• Rated current: 4 A
• Rated voltage: 230/400 V AC
• Breaking capacity: 10 kA
• Frequency: 50/60 Hz
• Mounting: DIN rail
• Connection: screw terminals
• Terminal capacity: 0.75 - 35 mm² (solid/stranded), 0.75 - 25 mm² (fine-stranded with ferrule)
• Degree of protection: IP20 (terminals), IP40 (with enclosure)
• Mechanical service life: 10,000 cycles
• Electrical service life: 10,000 cycles
• Ambient operating temperature: -25 to +45 °C
• Energy limitation class: 3
• Standards: IEC 60898-1, EN 60898-1
• Product series: SENTRON 5SY4
• Release type: thermal-magnetic

Recommendations

For optimal performance, install in a suitable enclosure to achieve IP40 protection. Ensure proper torque on screw terminals to maintain reliable connections.