Siemens Supplementary Protector: 63 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp
The SIEMENS IEC Supplementary Protector (SKU 30XW34, MPN 5SY44636) is a B-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series, rated at 63 A Amps. It features a maximum AIR rating of 10kA…
SKU 3G-OTH-21702
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Product Description
The SIEMENS IEC Supplementary Protector (SKU 30XW34, MPN 5SY44636) is a B-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series, rated at 63 A Amps. It features a maximum AIR rating of 10kA at 400V AC, a DC voltage rating of 72V DC, and screw clamp terminal connections.
Frequently Asked Questions
What is the SIEMENS 5SY44636 supplementary protector used for?
The SIEMENS 5SY44636 is a B-curve, 4-pole supplementary protector rated 63 A at 400 V AC and 72 V DC. It protects branch circuits and sensitive equipment against overloads and short circuits in industrial control panels, HVAC systems, and machinery across 14 industrial departments.
What are the specifications of the SIEMENS 5SY44636?
The SIEMENS 5SY44636 is a 4-pole B-curve supplementary protector rated 63 A, 400 V AC, 72 V DC, with a maximum AIR rating of 10 kA at 400 V AC. It uses screw clamp terminals and is part of the 5SY4 series, compliant with UL1077 for DIN-rail mounting.
Where to buy the SIEMENS 5SY44636 worldwide?
3G Electric supplies the SIEMENS 5SY44636 supplementary protector to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this genuine Siemens component.
How to select the right supplementary protector for a 63 A circuit?
For a 63 A circuit, select a supplementary protector with a B-curve for resistive or lighting loads. Verify voltage ratings match your system (e.g., 400 V AC or 72 V DC). The SIEMENS 5SY44636 meets these requirements with screw clamp terminals for secure wiring.
Used in
Common applications for SiemensSiemens Products
3G Electric supplies Siemens b-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.













