Siemens 5SY44637 C-Curve 4-Pole Supplementary Protector
The SIEMENS IEC Supplementary Protector (SKU 5SY44637, MPN 5SY44637) is a C-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series. It is rated for 63 A Amps with a maximum AIR rating of…
SKU 3G-OTH-20491
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Product Description
The SIEMENS IEC Supplementary Protector (SKU 5SY44637, MPN 5SY44637) is a C-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series. It is rated for 63 A Amps with a maximum AIR rating of 10kA at 400V AC and a DC voltage rating of 72V DC. The terminal connection uses a screw clamp.
Frequently Asked Questions
What is the SIEMENS 5SY44637 supplementary protector used for?
The SIEMENS 5SY44637 is a C-curve, 4-pole supplementary protector designed for overcurrent protection in industrial control panels, HVAC equipment, and machinery. It mounts on a DIN rail and is rated 63 A at 400 V AC or 72 V DC, with a 10 kA interrupting rating at 400 V AC.
What are the specifications of the SIEMENS 5SY44637?
The SIEMENS 5SY44637 is a 4-pole supplementary protector from the 5SY4 series, rated 63 A with a C-curve trip characteristic. It has a maximum AIR rating of 10 kA at 400 V AC, a DC voltage rating of 72 V DC, and screw clamp terminals. It is UL1077 listed for DIN-rail mounting.
Where to buy the SIEMENS 5SY44637 worldwide?
3G Electric supplies the SIEMENS 5SY44637 supplementary protector to customers worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this 63 A, 4-pole C-curve protector.
How to install the SIEMENS 5SY44637 supplementary protector?
Install the SIEMENS 5SY44637 by snapping it onto a standard 35 mm DIN rail. Ensure the circuit is de-energized, then connect phase conductors to the screw clamp terminals (torque to manufacturer specs). For DC applications, verify polarity and voltage rating (72 V DC max). Always follow local electrical codes.
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3G Electric supplies Siemens c-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.
