SIEMENS IEC Supplementary Protector: 40 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp
The SIEMENS IEC Supplementary Protector (MPN 5SY44405) is a 40 A, A-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series. It is rated for 72V DC and 10kA at 400V AC, with screw clamp…
SKU 3G-OTH-127864
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- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The SIEMENS IEC Supplementary Protector (MPN 5SY44405) is a 40 A, A-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series. It is rated for 72V DC and 10kA at 400V AC, with screw clamp terminals.
Frequently Asked Questions
What is the SIEMENS IEC Supplementary Protector 5SY44405 used for?
The SIEMENS IEC Supplementary Protector 5SY44405 is used for overcurrent protection in industrial control panels, HVAC equipment, and machinery. Its A-Curve trip characteristic suits resistive loads and low-inrush circuits. As a 4-pole UL1077 device, it provides branch-circuit-level protection in DIN rail-mounted assemblies.
What are the specifications of the SIEMENS 5SY44405 supplementary protector?
The SIEMENS 5SY44405 is a 40 A, A-Curve, 4-pole supplementary protector rated 72V DC and 10kA at 400V AC. It uses screw clamp terminals and is part of the 5SY4 series. It is UL1077 listed for DIN rail mounting, suitable for 400V AC systems.
Where to buy the SIEMENS 5SY44405 supplementary protector worldwide?
You can source the SIEMENS 5SY44405 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; we supply genuine SIEMENS IEC components.
How to select the correct SIEMENS supplementary protector for a 40 A circuit?
Select the SIEMENS 5SY44405 for 40 A circuits requiring A-Curve protection on 400V AC or 72V DC systems. Ensure the interrupting rating (10kA at 400V AC) exceeds available fault current. Use screw clamp terminals for secure wiring. Always verify DIN rail compatibility and UL1077 listing for your application.
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3G Electric supplies SIEMENS IEC a-curve, 4-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.
