Siemens Supplementary Protector: 30 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp
The SIEMENS IEC Supplementary Protector (SKU 30XV57, MPN 5SY43307) is a C-Curve, 3-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series. It is rated for 30 A amps, with an AC voltage rating of 400V…
SKU 3G-OTH-20002
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Product Description
The SIEMENS IEC Supplementary Protector (SKU 30XV57, MPN 5SY43307) is a C-Curve, 3-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series. It is rated for 30 A amps, with an AC voltage rating of 400V AC, a DC voltage rating of 72V DC, and a maximum AIR rating of 10kA at 400V AC. The terminal connection is a screw clamp.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
Frequently Asked Questions
What is the SIEMENS 5SY43307 supplementary protector used for?
The SIEMENS 5SY43307 is a C-Curve, 3-Pole UL1077 supplementary protector designed to protect industrial control circuits and equipment from overcurrents and short circuits. It is commonly used in panel building, automation, and machinery applications where branch circuit protection is not required.
What are the specifications of the SIEMENS 5SY43307?
The SIEMENS 5SY43307 is rated for 30 A amps, with an AC voltage rating of 400V AC, a DC voltage rating of 72V DC, and a maximum AIR rating of 10kA at 400V AC. It features a screw clamp terminal connection and is part of the 5SY4 series, designed for DIN rail mounting.
Where to buy the SIEMENS 5SY43307 worldwide?
You can source the SIEMENS 5SY43307 supplementary protector through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring reliable supply for your projects. Contact us for availability and lead times.
How to install the SIEMENS 5SY43307 supplementary protector?
Install the SIEMENS 5SY43307 by snapping it onto a standard DIN rail. Ensure the circuit is de-energized, then connect wires to the screw clamp terminals using the specified torque. Follow generic best practices for UL1077 devices: verify voltage and current ratings match your application before energizing.
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Common applications for SiemensSiemens Products
3G Electric supplies Siemens c-curve, 3-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.















