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Siemens Supplementary Protector: 0.5 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp - C-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SiemensC-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors

Siemens Supplementary Protector: 0.5 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp

The Siemens 5SY4 series IEC Supplementary Protector (SKU 30XT79, MPN 5SY41057) is a C-curve, 1-pole UL1077 DIN rail-mount supplementary protector rated at 0.5 A. It features a maximum AIR rating of 10kA at 230/400V…

SKU 3G-OTH-19475

Brand
Siemens
Item
Supplementary Protector: 0.5 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp
Category
C-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors
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Technical Specifications

Siemens
Manufacturer Part Number
5SY41057
Series
5SY4
Type
10kA at 230/400V AC, Screw Clamp, 5SY4, C
DC
72V
Curve Type
C
Max. AIR Rating
10kA at 230/400V AC
AC Voltage Rating
230/400V AC
DC Voltage Rating
72V DC
Terminal Connection
Screw Clamp
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Siemens 5SY4 series IEC Supplementary Protector (SKU 30XT79, MPN 5SY41057) is a C-curve, 1-pole UL1077 DIN rail-mount supplementary protector rated at 0.5 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, with screw clamp terminals.

Frequently Asked Questions

What is the Siemens 5SY41057 supplementary protector used for?

The Siemens 5SY41057 is a C-curve, 1-pole supplementary protector rated at 0.5 A. It protects branch circuits and equipment against overloads and short circuits in industrial control panels, HVAC systems, and lighting applications where UL1077 listing is required.

What are the specifications of the Siemens 5SY41057?

The Siemens 5SY41057 is a 0.5 A, C-curve, 1-pole supplementary protector with 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 uses screw clamp terminals and mounts on a DIN rail.

Where to buy the Siemens 5SY41057 worldwide?

3G Electric supplies the Siemens 5SY41057 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 Siemens supplementary protector to any country.

How to install the Siemens 5SY41057 supplementary protector?

Install the Siemens 5SY41057 on a standard DIN rail. Ensure the circuit is de-energized, snap the protector onto the rail, and tighten the screw clamp terminals to the torque specified on the device label. Follow local electrical codes and the manufacturer's instructions for safe operation.

Used in

Common applications for Siemens
District cooling plants — LME73 + RWF55 for condenser-water modulation
Inflight catering and food-processing steam boilers — LMG22 with SQN90 air-fuel cross-damper
Hospital steam-plant redundancy — LME41 with QRA2 UV flame detection for dual-fuel boilers
Semiconductor fab process heat — LME23 and SKP55 gas valves on hot-oil heater skids
Container-terminal reefer-deck heating — LMG22 retrofit onto legacy burner racks

Siemens Products

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.

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SIEMENS IEC Supplementary Protector: 25 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41257). Key specifications — Brand: SIEMENS; Terminal Connection: Screw Clamp; DC Voltage Rating: 72V DC; Max. AIR Rating: 10kA at 230/400V AC; Series: 5SY4; AC Voltage Rating: 230/400V AC; Curve Type: C.
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SIEMENS IEC Supplementary Protector: 25 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41257). Key specifications — Brand: SIEMENS; Terminal Connection: Screw Clamp; DC Voltage Rating: 72V DC; Max. AIR Rating: 10kA at 230/400V AC; Series: 5SY4; AC Voltage Rating: 230/400V AC; Curve Type: C.
SIEMENS IEC Supplementary Protector: 16 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41167). Key specifications — Brand: SIEMENS; Terminal Connection: Screw Clamp; DC Voltage Rating: 72V DC; Max. AIR Rating: 10kA at 230/400V AC; Series: 5SY4; AC Voltage Rating: 230/400V AC; Curve Type: C.
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