Siemens 5SY1702-2 1-Pole 2A C-Curve Miniature Circuit Breaker with Auxiliary Contact

Protect your electrical circuits from overload and short-circuit damage with the Siemens 5SY1702-2 miniature circuit breaker. This 1-pole device is rated for 2 A with a C tripping characteristic, making it suitable for general lighting and socket circuits where moderate inrush currents are expected. The integrated auxiliary contact (1 NO) provides a status signal, allowing remote monitoring of the breaker's state. Designed for DIN rail mounting, it fits standard distribution boards and offers a rated switching capacity of 6 kA.

Who is it for

Electricians, panel builders, and maintenance technicians who need reliable circuit protection with a signal contact for control or monitoring applications.

Main features

• 1-pole miniature circuit breaker (MCB)
• Rated current: 2 A
• Tripping characteristic: C
• Rated voltage: 230/400 V AC
• Rated switching capacity: 6 kA
• Integrated auxiliary contact: 1 NO
• DIN rail mounting (EN 60715)
• Module width: 1 TE (18 mm)

Specifications

• Number of poles: 1
• Rated current: 2 A
• Tripping characteristic: C
• Rated voltage: 230/400 V AC
• Rated switching capacity (Icn): 6 kA
• Auxiliary contact: Yes, 1 NO
• Mounting type: DIN rail
• Terminal type: Screw terminals
• Degree of protection: IP20 (terminals), IP40 (front)
• Operating temperature range: -25 to +55 °C
• Electrical endurance: 10,000 switching cycles
• Mechanical endurance: 20,000 switching cycles
• Standard: EN 60898-1, IEC 60898-1
• Frequency: 50/60 Hz
• Module width: 1 TE (18 mm)

Tips

When selecting a circuit breaker, ensure the rated current matches the expected load and the tripping characteristic suits the inrush current of connected equipment. The auxiliary contact can be wired to a PLC or indicator lamp for remote status monitoring.