Siemens 5SY4 Series D-Curve 1-Pole Supplementary Protector
The SIEMENS IEC Supplementary Protector (SKU 3G-OTH-20358) is a D-curve, 1-pole UL1077 DIN rail-mount supplementary protector rated at 50 A. It features a max. AIR rating of 10kA at 230/400V AC, an AC voltage rating…
SKU 3G-OTH-20358
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.
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Product Description
The SIEMENS IEC Supplementary Protector (SKU 3G-OTH-20358) is a D-curve, 1-pole UL1077 DIN rail-mount supplementary protector rated at 50 A. It features a max. AIR rating of 10kA at 230/400V AC, an AC voltage rating of 230/400V AC, and a DC voltage rating of 72V DC. The unit uses a screw clamp terminal connection and is part of the 5SY4 series (MPN 5SY41508).
Frequently Asked Questions
What is the SIEMENS 5SY41508 supplementary protector used for?
The SIEMENS 5SY41508 is a D-curve, 1-pole UL1077 supplementary protector rated at 50 A. It protects branch circuits and equipment against overloads and short circuits in industrial control panels, HVAC systems, and machinery. Its D-curve is ideal for high-inrush loads like motors and transformers.
What are the specifications of the SIEMENS 5SY41508?
The SIEMENS 5SY41508 is a 50 A, 1-pole supplementary protector with a D-curve. It has a max. AIR rating of 10kA at 230/400V AC, an AC voltage rating of 230/400V AC, and a DC voltage rating of 72V DC. It uses a screw clamp terminal connection and is part of the 5SY4 series.
Where to buy the SIEMENS 5SY41508 worldwide?
You can source the SIEMENS 5SY41508 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; we supply genuine Siemens components for industrial applications.
How to select the correct SIEMENS supplementary protector for your application?
Select based on voltage rating (AC or DC), current rating (50 A for this model), and curve type. The D-curve is suited for high-inrush loads. Ensure the max. AIR rating (10kA at 230/400V AC) exceeds your system's fault current. Use a screw clamp terminal connection for secure wiring. Consult Siemens documentation for coordination.
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3G Electric supplies Siemens d-curve, 1-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.