Siemens 5SY41057 MCB 1-Pole C-Curve 0.5A 10kA

The Siemens 5SY41057 miniature circuit breaker stands out with its C-curve tripping characteristic and 0.5 A rated current, making it ideal for protecting highly sensitive control circuits and signaling lines where precise low-current protection is required. Its 10 kA breaking capacity ensures reliable interruption of high fault currents in industrial and commercial installations.

Highlights

• 1-pole design for single-phase protection
• C tripping characteristic for moderate inrush loads
• Rated current of 0.5 A for precise protection of low-power circuits
• 10 kA short-circuit breaking capacity
• DIN rail mounting for quick installation

In daily use

This MCB is engineered for dependable performance in control panels, automation systems, and distribution boards. Its screw terminals accept conductors from 0.75 to 35 mm², ensuring secure connections. With a mechanical and electrical service life of 10,000 switching cycles, it offers long-term reliability.

Full specifications

• Number of poles: 1
• Tripping characteristic: C
• Rated current: 0.5 A
• Rated voltage: 230/400 V AC
• Rated short-circuit breaking capacity: 10 kA
• Frequency: 50/60 Hz
• Mounting type: DIN rail (TH35-15, TH35-7.5)
• Degree of protection: IP20
• Ambient operating temperature: -25 to +45 °C
• Ambient storage temperature: -40 to +75 °C
• Mechanical service life: 10,000 switching cycles
• Electrical service life: 10,000 switching cycles
• Terminal type: Screw terminals
• Conductor cross-section (solid): 0.75 - 35 mm²
• Conductor cross-section (stranded): 0.75 - 35 mm²
• Tightening torque: 2.5 - 3 Nm
• Standard: IEC 60898-1, EN 60898-1
• Pollution degree: 3
• Overvoltage category: III

Final note

With its precise 0.5 A rating and robust construction, the Siemens 5SY41057 is a dependable choice for protecting delicate circuits in demanding environments.