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Siemens Supplementary Protector: 3 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp - A-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SiemensA-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors

Siemens Supplementary Protector: 3 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp

The SIEMENS IEC Supplementary Protector (SKU 3G-OTH-21403) is a 3 A, A-curve, 1-pole UL1077 DIN rail-mount supplementary protector from the 5SY4 series. It features a screw clamp terminal connection and is rated for…

SKU 3G-OTH-21403

Brand
Siemens
Item
Supplementary Protector: 3 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp
Category
A-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

Siemens
Manufacturer Part Number
5SY41035
Series
5SY4
Type
10kA at 230/400V AC, Screw Clamp, 5SY4, A
DC
72V
Curve Type
A
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-21403) is a 3 A, A-curve, 1-pole UL1077 DIN rail-mount supplementary protector from the 5SY4 series. It features a screw clamp terminal connection and is rated for 10kA at 230/400V AC and 72V DC.

Frequently Asked Questions

What is the SIEMENS 5SY41035 supplementary protector used for?

The SIEMENS 5SY41035 is a 3 A, A-curve, 1-pole supplementary protector used to protect branch circuits and control equipment from overcurrent and short circuits in industrial control panels, HVAC systems, and machinery. It mounts on a DIN rail and is rated for 10kA at 230/400V AC and 72V DC.

What are the specifications of the SIEMENS 5SY41035?

The SIEMENS 5SY41035 is a 3 A, A-curve, 1-pole supplementary protector from the 5SY4 series. It has a screw clamp terminal connection, a DC voltage rating of 72V DC, an AC voltage rating of 230/400V AC, and a maximum AIR rating of 10kA at 230/400V AC. It is UL1077 listed for DIN rail mounting.

Where to buy the SIEMENS 5SY41035 worldwide?

3G Electric supplies the SIEMENS 5SY41035 supplementary protector to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time on this 3 A, A-curve, 1-pole protector from the 5SY4 series.

How to install the SIEMENS 5SY41035 supplementary protector?

To install the SIEMENS 5SY41035, snap it onto a standard 35 mm DIN rail. Ensure the circuit is de-energized. Connect wires to the screw clamp terminals per the torque specifications in the datasheet. The A-curve trip characteristic is suitable for protecting sensitive electronic loads. Always 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

Siemens Products

3G Electric supplies Siemens a-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
SIEMENS IEC Supplementary Protector: 2 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41025)
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SIEMENS IEC Supplementary Protector: 2 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41025)
SIEMENS IEC Supplementary Protector: 25 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41255)
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SIEMENS IEC Supplementary Protector: 25 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41255)
SIEMENS IEC Supplementary Protector: 1 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41015)
Siemens
SIEMENS IEC Supplementary Protector: 1 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41015)
SIEMENS IEC Supplementary Protector: 20 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41205)
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SIEMENS IEC Supplementary Protector: 20 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41205)
SIEMENS IEC Supplementary Protector: 50 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41505)
Siemens
SIEMENS IEC Supplementary Protector: 50 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41505)
SIEMENS IEC Supplementary Protector: 8 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41085)
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SIEMENS IEC Supplementary Protector: 8 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41085)

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SIEMENS IEC Supplementary Protector: 40 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41405)
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SIEMENS IEC Supplementary Protector: 40 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41405)
SIEMENS IEC Supplementary Protector: 4 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41045)
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SIEMENS IEC Supplementary Protector: 4 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41045)
SIEMENS IEC Supplementary Protector: 0.5 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41055)
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SIEMENS IEC Supplementary Protector: 0.5 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41055)
SIEMENS IEC Supplementary Protector: 13 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41135)
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SIEMENS IEC Supplementary Protector: 13 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41135)
SIEMENS IEC Supplementary Protector: 10 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41105)
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SIEMENS IEC Supplementary Protector: 10 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41105)
SIEMENS IEC Supplementary Protector: 6 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41065)
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SIEMENS IEC Supplementary Protector: 6 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41065)
SIEMENS IEC Supplementary Protector: 63 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41635)
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SIEMENS IEC Supplementary Protector: 63 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41635)
SIEMENS IEC Supplementary Protector: 32 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41325)
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SIEMENS IEC Supplementary Protector: 32 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41325)