SIEMENS IEC 5SY42638 D-Curve 2-Pole Supplementary Protector
The SIEMENS IEC Supplementary Protector (SKU 5SY42638, MPN 5SY42638) is a 63 A, D-curve, 2-pole UL1077 DIN rail-mount supplementary protector from the 5SY4 series. It is rated for 400V AC and 72V DC, with a breaking…
SKU 3G-OTH-127488
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 5SY42638, MPN 5SY42638) is a 63 A, D-curve, 2-pole UL1077 DIN rail-mount supplementary protector from the 5SY4 series. It is rated for 400V AC and 72V DC, with a breaking capacity of 10kA at 400V AC, and features screw-clamp terminals.
Frequently Asked Questions
What is the SIEMENS IEC Supplementary Protector 5SY42638 used for?
The SIEMENS IEC Supplementary Protector 5SY42638 is used to protect branch circuits and equipment from overcurrent and short circuits in industrial control panels, HVAC systems, and machinery. Its D-curve trip characteristic suits high-inrush loads like motors and transformers. It mounts on a DIN rail and is UL1077 listed for supplementary protection.
What are the specifications of the SIEMENS 5SY42638 supplementary protector?
The SIEMENS 5SY42638 is a 2-pole, D-curve supplementary protector rated at 63 A, 400V AC, and 72V DC. It has a breaking capacity of 10kA at 400V AC and uses screw-clamp terminals. It is part of the 5SY4 series and is designed for DIN rail mounting per UL1077.
Where to buy the SIEMENS 5SY42638 supplementary protector worldwide?
You can source the SIEMENS 5SY42638 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 for industrial applications.
How to install the SIEMENS 5SY42638 supplementary protector?
To install the SIEMENS 5SY42638, snap it onto a standard 35 mm DIN rail. Ensure the circuit is de-energized. Connect wires to the screw-clamp terminals using the correct torque specified by SIEMENS. The D-curve rating means it is suitable for circuits with high inrush currents; verify system voltage does not exceed 400V AC or 72V DC.
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3G Electric supplies SIEMENS IEC d-curve, 2-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.