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Siemens 5SY43157 C-Curve 3-Pole Supplementary Protector - C-Curve, 3-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SiemensC-Curve, 3-Pole UL1077 DIN Rail-Mount Supplementary Protectors

Siemens 5SY43157 C-Curve 3-Pole Supplementary Protector

<p>The Siemens 5SY43157 is a C-Curve, 3-pole supplementary protector designed for DIN rail mounting. It offers a rated current of 1.6 A and is suitable for both AC (400V) and DC (72V) applications. With a maximum air…

SKU 3G-OTH-19556

Brand
Siemens
Item
5SY43157 C-Curve 3-Pole Supplementary Protector
Part Number
5SY43157
Category
C-Curve, 3-Pole UL1077 DIN Rail-Mount Supplementary Protectors
Available to Order
Also known as:5SY43157Siemens
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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
5SY43157
Series
5SY4
Type
10kA at 400V AC, Screw Clamp, 5SY4
AC
400V
DC
72V
Max. AIR Rating
10kA at 400V AC
AC Voltage Rating
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

<p>The Siemens 5SY43157 is a C-Curve, 3-pole supplementary protector designed for DIN rail mounting. It offers a rated current of 1.6 A and is suitable for both AC (400V) and DC (72V) applications. With a maximum air rating of 10kA at 400V AC and screw clamp terminals, this device ensures reliable protection in industrial control panels and equipment.</p><p>Ideal for use in manufacturing, infrastructure, and commercial installations, this supplementary protector is part of the Siemens 5SY4 series. For Singapore buyers, 3G Electric provides SGD quotes on request, handles GST for local orders, and offers fast delivery across Singapore and Southeast Asia.</p>

Frequently Asked Questions

What are the key specifications of the Siemens 5SY43157?

The Siemens 5SY43157 is a C-Curve, 3-pole supplementary protector with a rated current of 1.6 A. It has an AC voltage rating of 400V AC and a DC voltage rating of 72V DC. The maximum air rating is 10kA at 400V AC, and it features screw clamp terminals.

Can I get a quote in SGD and what about delivery in Singapore?

Yes, 3G Electric provides SGD quotes on request. For Singapore buyers, GST is handled. We offer fast delivery across Singapore and Southeast Asia.

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, 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.

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Three-pole supplementary protector with C-curve trip characteristic, rated 40A at 400V AC and 72V DC. Provides overcurrent protection for branch circuits and equipment in industrial control panels, HVAC systems, and machinery. Features screw clamp terminals and a maximum interrupting rating of 10kA at 400V AC. Complies with UL1077 and mounts on DIN rail
Siemens
Three-pole supplementary protector with C-curve trip characteristic, rated 40A at 400V AC and 72V DC. Provides overcurrent protection for branch circuits and equipment in industrial control panels, HVAC systems, and machinery. Features screw clamp terminals and a maximum interrupting rating of 10kA at 400V AC. Complies with UL1077 and mounts on DIN rail

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