Siemens 5SY1706-2 1-Pole 6A C-Curve MCB with Integrated Auxiliary Switch

The Siemens 5SY1706-2 is a 1-pole miniature circuit breaker (MCB) with a C tripping characteristic, rated at 6 A and 230/400 V AC, and a breaking capacity of 6 kA. It features an integrated auxiliary switch with one normally open (NO) contact for status indication.

Overview

This device is designed for DIN rail mounting (EN 60715) and offers reliable protection for circuits against overload and short-circuit. The integrated auxiliary switch provides a signal contact, useful for remote monitoring or interlocking applications.

What stands out

• Integrated auxiliary switch (1 NO) for status signaling
• Rated switching capacity of 6 kA according to EN 60898-1
• Energy limitation class 3 for enhanced protection
• Wide operating temperature range: -25 °C to +45 °C

Technical details

• Number of poles: 1
• Tripping characteristic: C
• Rated current: 6 A
• Rated voltage: 230/400 V AC
• Frequency: 50/60 Hz
• Installation depth: 70 mm
• Degree of protection: IP20 (terminals), IP40 (with enclosure)
• Terminal type: screw terminals
• Conductor cross-section solid: 0.75 - 35 mm²
• Conductor cross-section flexible: 0.75 - 25 mm²
• Electrical endurance: 10000 switching cycles
• Mechanical endurance: 20000 switching cycles
• Overvoltage category: III
• Pollution degree: 3

Our verdict

A robust MCB with integrated signaling, ideal for industrial and commercial applications where status feedback is essential.