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Siemens 5SY4 Series C-Curve 1-Pole UL1077 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 UL1077 Supplementary Protector

The SIEMENS IEC Supplementary Protector (SKU 3G-OTH-19792) is a C-curve, 1-pole UL1077 DIN rail-mount supplementary protector rated for 15 A amps. It features a maximum AIR rating of 10kA at 230/400V AC, an AC…

SKU 3G-OTH-19792

Brand
Siemens
Item
5SY4 Series C-Curve 1-Pole UL1077 Supplementary Protector
Category
C-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors
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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
5SY41187
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 IEC Supplementary Protector (SKU 3G-OTH-19792) is a C-curve, 1-pole UL1077 DIN rail-mount supplementary protector rated for 15 A amps. 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. This 5SY4 series unit uses screw clamp terminals and is identified by manufacturer part number 5SY41187.

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 5SY41187 supplementary protector used for?

The SIEMENS 5SY41187 is a C-curve, 1-pole UL1077 supplementary protector rated for 15 A. It protects branch circuits and equipment against overloads and short circuits in industrial control panels, HVAC systems, and lighting applications where DIN rail mounting is required.

What are the specifications of the SIEMENS 5SY41187?

The SIEMENS 5SY41187 is rated for 15 A with a C-curve trip characteristic. It has an AC voltage rating of 230/400V AC, a DC voltage rating of 72V DC, and a maximum AIR rating of 10kA at 230/400V AC. It uses screw clamp terminals and is part of the 5SY4 series.

Where to buy the SIEMENS 5SY41187 worldwide?

You can source the SIEMENS 5SY41187 supplementary protector through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

How to install the SIEMENS 5SY41187 supplementary protector?

Install the SIEMENS 5SY41187 by snapping it onto a standard DIN rail. Ensure the circuit is de-energized before wiring. Connect conductors to the screw clamp terminals per the torque specifications in the datasheet. Verify the C-curve matches the load type to avoid nuisance tripping.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
C-curve, 1-pole supplementary protector for DIN rail mounting, rated 13 A. Provides overload and short-circuit protection in industrial control circuits and equipment. UL1077 listed, with screw clamp terminals. AC rating 230/400 V, DC rating 72 V
Siemens
C-curve, 1-pole supplementary protector for DIN rail mounting, rated 13 A. Provides overload and short-circuit protection in industrial control circuits and equipment. UL1077 listed, with screw clamp terminals. AC rating 230/400 V, DC rating 72 V
C-curve, 1-pole supplementary protector for DIN rail mounting. Rated 35 A with 10 kA interrupting capacity at 230/400 V AC and 72 V DC. Screw clamp terminals. Suitable for overcurrent and short-circuit protection in branch circuits and equipment
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C-curve, 1-pole supplementary protector for DIN rail mounting. Rated 35 A with 10 kA interrupting capacity at 230/400 V AC and 72 V DC. Screw clamp terminals. Suitable for overcurrent and short-circuit protection in branch circuits and equipment
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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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
This 1-pole supplementary protector from the Siemens 5SY4 series features a C-curve trip characteristic and a rated current of 50 A. It is UL1077 recognized for overcurrent protection of control circuits, instrumentation, and industrial equipment. The unit mounts on a DIN rail and uses screw clamp terminals, with AC voltage rating of 230/400V AC and DC voltage rating of 72V DC
Siemens
This 1-pole supplementary protector from the Siemens 5SY4 series features a C-curve trip characteristic and a rated current of 50 A. It is UL1077 recognized for overcurrent protection of control circuits, instrumentation, and industrial equipment. The unit mounts on a DIN rail and uses screw clamp terminals, with AC voltage rating of 230/400V AC and DC voltage rating of 72V DC
The Siemens 5SY41047 is a 4A, C-curve, 1-pole supplementary protector from the 5SY4 series. It is UL1077 recognized for DIN rail mounting and features screw clamp terminals. Rated for 10kA at 230/400V AC and 72V DC, it provides overcurrent and short-circuit protection in industrial control circuits, HVAC equipment, and panelboards
Siemens
The Siemens 5SY41047 is a 4A, C-curve, 1-pole supplementary protector from the 5SY4 series. It is UL1077 recognized for DIN rail mounting and features screw clamp terminals. Rated for 10kA at 230/400V AC and 72V DC, it provides overcurrent and short-circuit protection in industrial control circuits, HVAC equipment, and panelboards
This 1-pole supplementary protector features a C-curve trip characteristic and a rated current of 2 A. It is designed for DIN rail mounting and provides overcurrent protection in branch circuits and equipment. The unit has a maximum AIR rating of 10kA at 230/400V AC and a DC voltage rating of 72V. Terminal connection is via screw clamp
Siemens
This 1-pole supplementary protector features a C-curve trip characteristic and a rated current of 2 A. It is designed for DIN rail mounting and provides overcurrent protection in branch circuits and equipment. The unit has a maximum AIR rating of 10kA at 230/400V AC and a DC voltage rating of 72V. Terminal connection is via screw clamp

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C-curve, 1-pole UL1077 supplementary protector rated 30A. Provides overload and short-circuit protection for branch circuits and equipment in industrial control panels, HVAC systems, and machinery. AC rating 230/400V, DC rating 72V. Screw clamp terminals for secure wiring
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This 1-pole supplementary protector from the Siemens 5SY4 series features a C-curve trip characteristic and a rated current of 10 A. It provides overcurrent and short-circuit protection for downstream equipment in industrial control panels, HVAC systems, and machinery. The unit has a maximum interrupting rating of 10 kA at 230/400 V AC and is also rated for 72 V DC applications. Terminal connections are made via screw clamps, and it is UL1077 recognized for branch circuit protection
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This 1-pole supplementary protector from the Siemens 5SY4 series features a C-curve trip characteristic and a rated current of 10 A. It provides overcurrent and short-circuit protection for downstream equipment in industrial control panels, HVAC systems, and machinery. The unit has a maximum interrupting rating of 10 kA at 230/400 V AC and is also rated for 72 V DC applications. Terminal connections are made via screw clamps, and it is UL1077 recognized for branch circuit protection
This 1-pole supplementary protector from the Siemens 5SY4 series features a C-curve trip characteristic and a 40 A current rating. It is rated for 10kA at 230/400V AC and 72V DC, with screw clamp terminals for secure wiring. Designed for DIN rail mounting, it provides overcurrent protection in industrial control panels, HVAC equipment, and machinery
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This 1-pole supplementary protector from the Siemens 5SY4 series features a C-curve trip characteristic and a 40 A current rating. It is rated for 10kA at 230/400V AC and 72V DC, with screw clamp terminals for secure wiring. Designed for DIN rail mounting, it provides overcurrent protection in industrial control panels, HVAC equipment, and machinery
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C-curve, 1-pole supplementary protector rated 40 A at 230/400 V AC with a maximum interrupting rating of 5 kA. Features screw clamp terminals and is designed for DIN-rail mounting. Suitable for overload and short-circuit protection in branch circuits and control panels
This 1-pole supplementary protector from the Siemens 5SY6 series features a C-curve trip characteristic and a rated current of 4 A. It is designed for DIN rail mounting and provides overload and short-circuit protection in branch circuits and control panels. The unit has a maximum interrupting rating of 5 kA at 230/400 V AC and uses screw clamp terminals for wiring
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This 1-pole supplementary protector from the Siemens 5SY6 series features a C-curve trip characteristic and a rated current of 4 A. It is designed for DIN rail mounting and provides overload and short-circuit protection in branch circuits and control panels. The unit has a maximum interrupting rating of 5 kA at 230/400 V AC and uses screw clamp terminals for wiring
This 1-pole supplementary protector features a C-curve trip characteristic and is rated for 3 A at 230/400 V AC with a maximum interrupting rating of 5 kA. It uses screw clamp terminals and mounts on a DIN rail. Suitable for branch circuit and equipment protection in industrial control panels, HVAC systems, and machinery where UL1077 listing is required
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This 1-pole supplementary protector features a C-curve trip characteristic and is rated for 3 A at 230/400 V AC with a maximum interrupting rating of 5 kA. It uses screw clamp terminals and mounts on a DIN rail. Suitable for branch circuit and equipment protection in industrial control panels, HVAC systems, and machinery where UL1077 listing is required
This 1-pole supplementary protector features a C-curve trip characteristic and is rated for 25A. It provides overload and short-circuit protection in branch circuits and equipment, with a maximum interrupting rating of 10kA at 230/400V AC and a DC voltage rating of 72V. The unit uses screw clamp terminals for secure wiring and is designed for DIN rail mounting
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C-curve, 1-pole supplementary protector rated 16 A with screw clamp terminals. Provides overcurrent protection for control circuits, instrumentation, and industrial equipment. UL1077 listed for DIN rail mounting. AC voltage rating 230/400V, DC voltage rating 72V, maximum AIR 10kA at 230/400V AC
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C-curve, 1-pole supplementary protector rated 16 A with screw clamp terminals. Provides overcurrent protection for control circuits, instrumentation, and industrial equipment. UL1077 listed for DIN rail mounting. AC voltage rating 230/400V, DC voltage rating 72V, maximum AIR 10kA at 230/400V AC