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Siemens 5SY44047 C-Curve 4-Pole Supplementary Protector - C-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SiemensC-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors

Siemens 5SY44047 C-Curve 4-Pole Supplementary Protector

The SIEMENS IEC Supplementary Protector (SKU 5SY44047, MPN 5SY44047) is a C-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector rated at 4 A Amps. It features a Max. AIR Rating of 10kA at 400V AC, a DC…

SKU 3G-OTH-20464

Brand
Siemens
Item
5SY44047 C-Curve 4-Pole Supplementary Protector
Part Number
5SY44047
Category
C-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors
Available to Order
Also known as:5SY44047Siemens
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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

Technical Specifications

Siemens
Manufacturer Part Number
5SY44047
Series
5SY4
Type
10kA at 400V AC, Screw Clamp, C
AC
400V
DC
72V
Max. AIR Rating
10kA at 400V AC
DC Voltage Rating
72V DC
Terminal Connection
Screw Clamp

Technical Documents

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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS IEC Supplementary Protector (SKU 5SY44047, MPN 5SY44047) is a C-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector rated at 4 A Amps. It features a Max. AIR Rating of 10kA at 400V AC, a DC Voltage Rating of 72V DC, and a Screw Clamp terminal connection, part of the Series 5SY4.

Frequently Asked Questions

What is the SIEMENS 5SY44047 supplementary protector used for?

The SIEMENS 5SY44047 is a C-curve, 4-pole supplementary protector rated at 4 A. It protects branch circuits and equipment against overloads and short circuits in industrial control panels, HVAC systems, and machinery, with a 72V DC rating and 10kA interrupting capacity at 400V AC.

What are the specifications of the SIEMENS 5SY44047?

The SIEMENS 5SY44047 (MPN 5SY44047) is a 4 A, C-curve, 4-pole supplementary protector. It has a DC voltage rating of 72V DC, a max. AIR rating of 10kA at 400V AC, and screw clamp terminals. It is part of the 5SY4 series and mounts on a DIN rail.

Where to buy the SIEMENS 5SY44047 worldwide?

3G Electric supplies the SIEMENS 5SY44047 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-branded component.

How to install a SIEMENS 5SY44047 supplementary protector?

To install the SIEMENS 5SY44047, mount it on a standard DIN rail, ensuring the rail is clean and secure. Connect wires to the screw clamp terminals per the torque specifications in the datasheet. Verify the system is de-energized before installation and follow local electrical codes.

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
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Siemens Products

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.

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