Siemens 5SY4 Series C-Curve 2-Pole Supplementary Protector
The SIEMENS IEC Supplementary Protector (SKU 5SY42357, MPN 5SY42357) is a 35 A, C-Curve, 2-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series. It features a screw clamp terminal connection and is…
SKU 3G-OTH-21201
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 5SY42357, MPN 5SY42357) is a 35 A, C-Curve, 2-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series. It features a screw clamp terminal connection and is rated for 400V AC (10kA max. AIR) and 72V DC.
Frequently Asked Questions
What is the SIEMENS 5SY42357 supplementary protector used for?
The SIEMENS 5SY42357 is a 35 A, C-curve, 2-pole supplementary protector designed for overcurrent protection in industrial control panels, HVAC equipment, and lighting circuits. It mounts on a DIN rail and meets UL1077 standards for branch-circuit protection in 400V AC or 72V DC systems.
What are the specifications of the SIEMENS 5SY42357?
The SIEMENS 5SY42357 is rated 35 A, 400V AC with a 10kA interrupting capacity, and 72V DC. It uses a screw clamp terminal connection, has a C-curve trip characteristic, and is part of the 5SY4 series. This 2-pole DIN rail-mount device is UL1077 listed for supplementary protection.
Where to buy the SIEMENS 5SY42357 worldwide?
3G Electric supplies the SIEMENS 5SY42357 supplementary protector worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time; we source and deliver this 5SY4 series protector to any country.
How to install the SIEMENS 5SY42357 supplementary protector?
Install the SIEMENS 5SY42357 by snapping it onto a 35 mm DIN rail. Connect wires using the screw clamp terminals, torquing to manufacturer specifications. Ensure the circuit is de-energized before installation. This C-curve protector is suitable for general-purpose overcurrent protection in industrial panels.
Used in
Common applications for SiemensSiemens Products
3G Electric supplies Siemens c-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.
