Siemens Supplementary Protector: 50 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp
The SIEMENS IEC Supplementary Protector (SKU 3G-OTH-20633, MPN 5SY43508) is a D-Curve, 3-Pole UL1077 DIN Rail-Mount supplementary protector rated at 50 A Amps. Part of the 5SY4 series, it features a screw clamp…
SKU 3G-OTH-20633
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
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Product Description
The SIEMENS IEC Supplementary Protector (SKU 3G-OTH-20633, MPN 5SY43508) is a D-Curve, 3-Pole UL1077 DIN Rail-Mount supplementary protector rated at 50 A Amps. Part of the 5SY4 series, it features a screw clamp terminal connection and is rated for 400V AC and 72V DC, with a maximum AIR rating of 10kA at 400V AC.
Frequently Asked Questions
What is the SIEMENS 5SY43508 supplementary protector used for?
The SIEMENS 5SY43508 is a D-Curve, 3-Pole UL1077 supplementary protector rated at 50 A Amps. It protects industrial control circuits, HVAC equipment, and panelboards against overloads and short circuits in 400V AC or 72V DC systems.
What are the specifications of the SIEMENS 5SY43508?
The SIEMENS 5SY43508 (MPN 5SY43508) is a 50 A Amps, D-Curve, 3-Pole supplementary protector from the 5SY4 series. It has a screw clamp terminal, AC voltage rating of 400V AC, DC voltage rating of 72V DC, and a max AIR rating of 10kA at 400V AC.
Where to buy the SIEMENS 5SY43508 worldwide?
You can source the SIEMENS 5SY43508 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.
How to install the SIEMENS 5SY43508 supplementary protector?
Install the SIEMENS 5SY43508 on a standard DIN rail. Ensure the circuit is de-energized, then snap the protector onto the rail. Connect wires using the screw clamp terminals per the torque specs in the datasheet. Verify polarity for DC applications.
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.
