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Siemens 5SY4 Series C-Curve 1-Pole Supplementary Protector - C-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SiemensC-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors

Siemens 5SY4 Series C-Curve 1-Pole Supplementary Protector

The SIEMENS IEC Supplementary Protector (SKU 5SY41157, MPN 5SY41157) is a 1.6 A, 1-pole C-curve supplementary protector from the 5SY4 series, designed for DIN rail mounting per UL1077. It features a screw clamp…

SKU 3G-OTH-19531

Brand
Siemens
Item
5SY4 Series C-Curve 1-Pole Supplementary Protector
Part Number
5SY41157
Category
C-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors
Available to Order
Also known as:5SY41157Siemens
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

Siemens
Manufacturer Part Number
5SY41157
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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Product Description

The SIEMENS IEC Supplementary Protector (SKU 5SY41157, MPN 5SY41157) is a 1.6 A, 1-pole C-curve supplementary protector from the 5SY4 series, designed for DIN rail mounting per UL1077. It features a screw clamp terminal connection and is rated for 10kA at 230/400V AC and 72V DC.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the SIEMENS 5SY41157 supplementary protector used for?

The SIEMENS 5SY41157 is a 1.6 A, 1-pole C-curve supplementary protector from the 5SY4 series, used to protect branch circuits and equipment against overloads and short circuits in industrial control panels, HVAC systems, and automation applications. It mounts on DIN rails per UL1077 and is rated for 230/400V AC and 72V DC.

What are the specifications of the SIEMENS 5SY41157?

The SIEMENS 5SY41157 is a 1.6 A, 1-pole C-curve supplementary protector with a screw clamp terminal connection. It has a max AIR rating of 10kA at 230/400V AC and a DC voltage rating of 72V DC. It is part of the 5SY4 series and designed for DIN rail mounting per UL1077.

Where to buy the SIEMENS 5SY41157 worldwide?

You can source the SIEMENS 5SY41157 supplementary protector worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we supply genuine Siemens components to industrial buyers globally.

How to install the SIEMENS 5SY41157 supplementary protector?

To install the SIEMENS 5SY41157, snap it onto a standard DIN rail in a suitable enclosure. Use a screwdriver to tighten the screw clamp terminals to the recommended torque for your wire size. Ensure the circuit is de-energized before installation. Follow Siemens guidelines and local electrical codes for proper mounting and wiring.

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, 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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This 1-pole supplementary protector features a C-curve trip characteristic and a rated current of 45 A. It is designed for DIN rail mounting and provides overcurrent protection in branch circuits, control panels, and equipment. The device has a maximum interrupting rating of 10 kA at 230/400 V AC and is rated for 72 V DC. Terminal connections are made via screw clamps
Siemens
This 1-pole supplementary protector features a C-curve trip characteristic and a rated current of 45 A. It is designed for DIN rail mounting and provides overcurrent protection in branch circuits, control panels, and equipment. The device has a maximum interrupting rating of 10 kA at 230/400 V AC and is rated for 72 V DC. Terminal connections are made via screw clamps

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