SIEMENS IEC Supplementary Protector: 63 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp
The SIEMENS IEC Supplementary Protector (SKU 5SY44638, MPN 5SY44638) is a D-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector rated for 63 A Amps. It features a 72V DC rating and a 10kA interrupting…
SKU 3G-OTH-128278
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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 (SKU 5SY44638, MPN 5SY44638) is a D-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector rated for 63 A Amps. It features a 72V DC rating and a 10kA interrupting capacity at 400V AC, with Screw Clamp terminals. This model is part of the SIEMENS 5SY4 series.
Frequently Asked Questions
What is the SIEMENS IEC Supplementary Protector 5SY44638 used for?
The SIEMENS IEC Supplementary Protector 5SY44638 is used for overcurrent protection in industrial control panels, HVAC equipment, and machinery. Its D-curve trip characteristic handles high inrush loads like motors and transformers. It mounts on DIN rails and is UL1077 listed for branch-circuit protection in 400V AC systems.
What are the specifications of the SIEMENS 5SY44638 supplementary protector?
The SIEMENS 5SY44638 is a 4-pole D-curve supplementary protector rated 63 A, 72V DC, with a 10kA interrupting capacity at 400V AC. It uses screw-clamp terminals and is part of the 5SY4 series. It is UL1077 listed for DIN-rail mounting and designed for industrial overcurrent protection.
Where to buy the SIEMENS 5SY44638 supplementary protector worldwide?
You can source the SIEMENS 5SY44638 supplementary protector worldwide through 3G Electric. As a global industrial distributor, 3G Electric handles full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we supply genuine SIEMENS IEC components to any country.
How to install the SIEMENS 5SY44638 supplementary protector?
To install the SIEMENS 5SY44638, snap it onto a standard 35mm DIN rail. Ensure the circuit is de-energized. Connect phase conductors to the screw-clamp terminals (torque per SIEMENS specs). For DC applications, observe polarity. The D-curve allows for motor-start inrush; verify system voltage does not exceed 400V AC or 72V DC.
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3G Electric supplies SIEMENS IEC d-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.
