Siemens 5SL60166MC 2-Pole 16 A C-Curve Miniature Circuit Breaker, 6 kA

With a rated switching capacity of 6 kA and a C tripping characteristic, the Siemens 5SL60166MC provides dependable protection for branch circuits with moderate inrush currents. This 2-pole miniature circuit breaker (MCB) is rated for 16 A and operates at 230/400 V AC, making it suitable for a wide range of residential and commercial applications.

Overview

The 5SL60166MC is part of Siemens' proven 5SL series, designed for DIN rail mounting and compliant with IEC 60898-1. It features screw terminals that accept solid conductors from 0.75 to 35 mm² and stranded conductors from 0.75 to 25 mm², ensuring secure and flexible wiring. With a mechanical and electrical service life of 10,000 switching cycles, this breaker is built for long-term reliability.

What stands out

• 2-pole design for isolating both line and neutral conductors
• C tripping characteristic for circuits with moderate inrush currents (e.g., lighting, control circuits)
• 6 kA rated switching capacity for robust short-circuit protection
• Wide operating temperature range from -25 °C to +45 °C
• IP20 protection at terminals (IP40 with enclosure)

Technical details

• Number of poles: 2
• Rated current: 16 A
• Tripping characteristic: C
• Rated switching capacity: 6 kA
• Rated voltage (AC): 230/400 V
• Frequency: 50/60 Hz
• Mounting type: DIN rail
• Degree of protection: IP20 (terminals), IP40 (with enclosure)
• Terminal type: Screw terminal
• Conductor cross-section (solid): 0.75 - 35 mm²
• Conductor cross-section (stranded): 0.75 - 25 mm²
• Mechanical service life: 10,000 switching cycles
• Electrical service life: 10,000 switching cycles
• Standard: IEC 60898-1
• Pollution degree: 2
• Overvoltage category: III
• Ambient operating temperature: -25 to +45 °C

Our verdict

A reliable and versatile MCB for standard circuit protection, offering solid performance and easy installation in a compact 2-pole form factor.