Siemens 5SY43028 D-Curve 3-Pole UL1077 Supplementary Protector
The SIEMENS IEC Supplementary Protector (SKU 5SY43028, MPN 5SY43028) is a D-Curve, 3-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series, rated at 2 A Amps. It features a Max. AIR Rating of 10kA…
SKU 3G-OTH-20794
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
Need installation or engineering help?
Ask a question
Product Description
The SIEMENS IEC Supplementary Protector (SKU 5SY43028, MPN 5SY43028) is a D-Curve, 3-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series, rated at 2 A Amps. It features a Max. AIR Rating of 10kA at 400V AC, AC Voltage Rating of 400V AC, and DC Voltage Rating of 72V DC, with a Screw Clamp terminal connection.
Frequently Asked Questions
What is the SIEMENS 5SY43028 supplementary protector used for?
The SIEMENS 5SY43028 is a D-curve, 3-pole supplementary protector designed to protect branch circuits and equipment from overloads and short circuits in industrial control panels, HVAC systems, and automation applications. It mounts on a DIN rail and is rated for 400V AC and 72V DC systems.
What are the specifications of the SIEMENS 5SY43028?
The SIEMENS 5SY43028 is a 2 A, 3-pole supplementary protector from the 5SY4 series. It has a max. AIR rating of 10kA at 400V AC, AC voltage rating of 400V AC, DC voltage rating of 72V DC, and a screw clamp terminal connection. It is UL1077 listed and DIN rail mountable.
Where to buy the SIEMENS 5SY43028 worldwide?
You can source the SIEMENS 5SY43028 supplementary protector through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this Siemens 5SY4 series component.
How to install the SIEMENS 5SY43028 supplementary protector?
To install the SIEMENS 5SY43028, snap it onto a standard DIN rail and secure the screw clamp terminals with the appropriate torque. Ensure the circuit is de-energized before wiring. Follow Siemens' guidelines for D-curve breakers to avoid nuisance tripping on inrush currents.
Used in
Common applications for SiemensSiemens Products
3G Electric supplies Siemens d-curve, 3-pole ul1077 din rail-mount supplementary protectors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.