Siemens 5SY1710-2 1-Pole 1A Z-Curve MCB with Integrated Auxiliary Switch

The Siemens 5SY1710-2 is a 1-pole miniature circuit breaker with an integrated auxiliary switch, offering both equipment protection and status signaling in a single DIN rail unit. Its Z-characteristic provides fast tripping for sensitive circuits, while the built-in normally open contact enables remote monitoring.

Highlights

• 1-pole MCB with 1 A rated current and Z tripping characteristic
• Integrated auxiliary switch with 1 NO contact
• Rated voltage 230 V AC / 60 V DC
• Switching capacity 1.5 kA
• DIN rail mounting (EN 60715)

In daily use

Designed for protecting control circuits, sensors, and other low-current equipment. The auxiliary contact allows integration into building automation or monitoring systems, signaling breaker status without additional wiring.

Full specifications

• Number of poles: 1
• Rated current: 1 A
• Tripping characteristic: Z
• Rated voltage: 230 V AC / 60 V DC
• Rated switching capacity: 1.5 kA
• Auxiliary contact: 1 NO
• Frequency: 50/60 Hz
• Mounting: DIN rail (EN 60715)
• Degree of protection: IP20 (terminals), IP40 (with cover)
• Operating temperature: -25 °C to +55 °C
• Connection: screw terminals
• Terminal capacity: 0.75 - 2.5 mm² solid, 0.75 - 1.5 mm² stranded
• Electrical service life: 10,000 cycles
• Mechanical service life: 20,000 cycles
• Overvoltage category: III
• Pollution degree: 2

Final note

A compact solution combining circuit protection and status signaling in one module, suitable for industrial and building automation applications.