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Siemens Supplementary Protector: 15 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: 15 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp

The SIEMENS IEC Supplementary Protector (SKU 30XU15) 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…

SKU 3G-OTH-19792

Brand
Siemens
Item
Supplementary Protector: 15 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
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 30XU15) 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.

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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SIEMENS IEC Supplementary Protector: 3 A Amps, 5kA at 230/400V AC, Screw Clamp, 5SY6, 230/400V AC, C (MPN 5SY61037). Key specifications — Brand: SIEMENS; Terminal Connection: Screw Clamp; DC Voltage Rating: Not Rated; Max. AIR Rating: 5kA at 230/400V AC; Series: 5SY6; AC Voltage Rating: 230/400V AC; Curve Type: C.
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.
Siemens
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.