Siemens Supplementary Protector: 25 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp
The SIEMENS IEC Supplementary Protector (SKU 30XU41) is a C-curve, 1-pole UL1077 DIN rail-mount supplementary protector rated at 25 A. It features a maximum AIR rating of 10kA at 230/400V AC, an AC voltage rating of…
SKU 3G-OTH-19879
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Product Description
The SIEMENS IEC Supplementary Protector (SKU 30XU41) is a C-curve, 1-pole UL1077 DIN rail-mount supplementary protector rated at 25 A. It features a maximum AIR rating of 10kA at 230/400V AC, an AC voltage rating of 230/400V AC, and a DC voltage rating of 72V DC. The unit uses screw clamp terminals and is part of the Siemens 5SY4 series (MPN 5SY41257).
Frequently Asked Questions
What is the SIEMENS 5SY41257 supplementary protector used for?
The SIEMENS 5SY41257 is a C-curve, 1-pole UL1077 supplementary protector rated at 25 A. It protects branch circuits and equipment against overloads and short circuits in industrial control panels, HVAC systems, and machinery, with a 10kA interrupting rating at 230/400V AC and 72V DC.
What are the specifications of the SIEMENS 5SY41257?
The SIEMENS 5SY41257 is a 25 A, C-curve, 1-pole supplementary protector with screw clamp terminals. It has a max AIR rating of 10kA at 230/400V AC, AC voltage rating of 230/400V AC, and DC voltage rating of 72V DC. It is part of the Siemens 5SY4 series and meets UL1077 standards.
Where to buy the SIEMENS 5SY41257 worldwide?
3G Electric supplies the SIEMENS 5SY41257 supplementary protector to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this Siemens 5SY4 series component.
How to select the right supplementary protector for a 25 A circuit?
For a 25 A circuit, select a supplementary protector with a C-curve for moderate inrush currents, like the SIEMENS 5SY41257. Ensure the voltage rating matches your system (230/400V AC or 72V DC) and the interrupting rating (10kA) exceeds available fault current. Use screw clamp terminals for secure wiring.
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3G Electric supplies Siemens c-curve, 1-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.
