Siemens Supplementary Protector: 1 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp

The SIEMENS 5SY43017 is a C-Curve, 3-pole UL1077 DIN rail-mount supplementary protector rated at 1 A. It protects branch circuits and control equipment from overcurrent and short circuits in industrial control panels, HVAC systems, and automation applications where a full-size circuit breaker is not required.

The SIEMENS 5SY43017 is a 1 A, 3-pole supplementary protector with a C-Curve trip characteristic. It has an AC voltage rating of 400 V AC, a DC voltage rating of 72 V DC, and a maximum AIR rating of 10 kA at 400 V AC. Terminal connection is screw clamp, and it is part of the 5SY4 series.

3G Electric supplies the SIEMENS 5SY43017 supplementary protector to customers worldwide. As a global industrial sourcing partner, we handle full logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time on this 5SY4 series protector.

Install the SIEMENS 5SY43017 by snapping it onto a standard 35 mm DIN rail. Ensure the supply is de-energized. Connect phase conductors to the screw clamp terminals, tightening to the torque specified on the device label. Verify the C-Curve rating matches your circuit's inrush characteristics before energizing.