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SIEMENS IEC 5SY44105 Supplementary Protector - A-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SIEMENS IECA-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors

SIEMENS IEC 5SY44105 Supplementary Protector

The SIEMENS IEC Supplementary Protector (SKU 5SY44105, MPN 5SY44105) is a 10 A, A-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series. It is rated for 72V DC and 10kA at 400V AC, with…

SKU 3G-OTH-127921

Brand
SIEMENS IEC
Item
5SY44105 Supplementary Protector
Category
A-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors
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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 IEC
Manufacturer Part Number
5SY44105
Type
10kA at 400V AC, Screw Clamp, A
AC
400V
DC
72V

Technical Documents

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SIEMENS IEC Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS IEC Supplementary Protector (SKU 5SY44105, MPN 5SY44105) is a 10 A, A-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series. It is rated for 72V DC and 10kA at 400V AC, with screw clamp terminals.

Frequently Asked Questions

What is the SIEMENS IEC Supplementary Protector 5SY44105 used for?

The SIEMENS IEC Supplementary Protector 5SY44105 is used for overcurrent protection in industrial control panels, HVAC equipment, and machinery. Its A-Curve trip characteristic suits resistive or lightly inductive loads. It mounts on a DIN rail and meets UL1077 standards for supplementary protection in branch circuits.

What are the specifications of the SIEMENS 5SY44105 supplementary protector?

The SIEMENS 5SY44105 is a 10 A, 4-pole supplementary protector from the 5SY4 series. It is rated 400V AC and 72V DC, with a breaking capacity of 10kA at 400V AC. Terminals are screw clamp type. It features an A-Curve trip characteristic and is designed for DIN-rail mounting per UL1077.

Where to buy the SIEMENS 5SY44105 supplementary protector worldwide?

You can source the SIEMENS 5SY44105 supplementary protector worldwide through 3G Electric. As a global industrial equipment distributor, 3G Electric handles full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this SIEMENS IEC supplementary protector.

How to install the SIEMENS 5SY44105 supplementary protector on a DIN rail?

To install the SIEMENS 5SY44105, snap it onto a standard 35 mm DIN rail. Ensure the rail is clean and the protector clips engage firmly. Connect conductors to the screw clamp terminals using the recommended torque. Verify the circuit is de-energized before installation. Follow SIEMENS guidelines for safe operation.

Used in

Common applications for SIEMENS IEC
Motor control centers — Siemens 5SY4 D-curve supplementary protectors (e.g., 5SY42108) for motor branch circuit protection
HVAC equipment — A-curve protectors (e.g., 5SY42255) for compressor and fan motor overcurrent protection
Industrial conveyor systems — 4-pole D-curve protectors (e.g., 5SY44168) for three-phase motor protection with neutral
Pump control panels — 2-pole supplementary protectors (e.g., 5SY42038) for single-phase pump motor protection
Machine tool control circuits — A-curve protectors (e.g., 5SY44155) for solenoid valve and relay protection
Power distribution sub-panels — 4-pole protectors (e.g., 5SY44155) for three-phase branch circuit protection in light industrial settings

SIEMENS IEC Products

3G Electric supplies SIEMENS IEC a-curve, 4-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
This 4-pole supplementary protector is rated 13 A with A-curve tripping characteristic. It is UL1077 listed for 400 V AC (10 kA interrupting capacity) and 72 V DC. Screw clamp terminals facilitate wiring. Typical applications include branch circuit protection in industrial control panels, motor control centers, and automation systems
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This 4-pole supplementary protector is rated 13 A with A-curve tripping characteristic. It is UL1077 listed for 400 V AC (10 kA interrupting capacity) and 72 V DC. Screw clamp terminals facilitate wiring. Typical applications include branch circuit protection in industrial control panels, motor control centers, and automation systems
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4-pole supplementary protector with A-Curve trip characteristic, rated 8A, 400V AC and 72V DC. Interrupting capacity 10kA at 400V AC. Screw clamp terminals. For overcurrent protection in control panels, HVAC, and machinery downstream of a listed circuit breaker
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A 6 A, A-curve, 4-pole supplementary protector rated 400V AC / 72V DC with a 10kA interrupting capacity at 400V AC. Features screw clamp terminals and is designed for DIN rail mounting per UL1077. Suitable for overcurrent and short-circuit protection in industrial control circuits and automation panels
This 4-pole supplementary protector from the 5SY4 series features an A-Curve trip characteristic for overcurrent protection in branch circuits. Rated 1A with a 10kA interrupting capacity at 400V AC and 72V DC, it uses screw clamp terminals for secure wiring. Suitable for DIN rail mounting in industrial control panels and machinery
SIEMENS IEC
This 4-pole supplementary protector from the 5SY4 series features an A-Curve trip characteristic for overcurrent protection in branch circuits. Rated 1A with a 10kA interrupting capacity at 400V AC and 72V DC, it uses screw clamp terminals for secure wiring. Suitable for DIN rail mounting in industrial control panels and machinery

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This 4-pole supplementary protector from the 5SY4 series features an A-Curve trip characteristic and a rated current of 2 A. It is UL1077 recognized for overcurrent protection in industrial control circuits and equipment. The device has a breaking capacity of 10 kA at 400 V AC and is rated for 72 V DC. Terminals are screw clamp type for secure wiring
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This 4-pole supplementary protector from the 5SY4 series features an A-Curve trip characteristic and a rated current of 2 A. It is UL1077 recognized for overcurrent protection in industrial control circuits and equipment. The device has a breaking capacity of 10 kA at 400 V AC and is rated for 72 V DC. Terminals are screw clamp type for secure wiring
This 3 A, A-Curve, 4-pole supplementary protector is UL1077 listed for DIN rail mounting. Rated 400V AC and 72V DC with a breaking capacity of 10kA at 400V AC, it features screw clamp terminals. Suitable for overcurrent and short-circuit protection in branch circuits and control equipment
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This 3 A, A-Curve, 4-pole supplementary protector is UL1077 listed for DIN rail mounting. Rated 400V AC and 72V DC with a breaking capacity of 10kA at 400V AC, it features screw clamp terminals. Suitable for overcurrent and short-circuit protection in branch circuits and control equipment
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63 A, 4-pole supplementary protector with A-Curve trip characteristic for overcurrent protection. Rated 400V AC (10kA interrupting capacity) and 72V DC. Screw clamp terminals. UL1077 listed for DIN rail mounting. Suitable for industrial control panels, HVAC equipment, and machinery with resistive or low-inrush loads
25 A, A-Curve, 4-pole supplementary protector for overcurrent protection of branch circuits in industrial control panels and equipment. Rated 72V DC, 400V AC with 10kA breaking capacity at 400V AC. Screw clamp terminals. UL1077 listed for DIN rail mounting
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25 A, A-Curve, 4-pole supplementary protector for overcurrent protection of branch circuits in industrial control panels and equipment. Rated 72V DC, 400V AC with 10kA breaking capacity at 400V AC. Screw clamp terminals. UL1077 listed for DIN rail mounting
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This 4-pole supplementary protector from the 5SY4 series features an A-curve trip characteristic and is UL1077 listed for DIN rail mounting. Rated 50 A at 400V AC and 72V DC with a breaking capacity of 10kA at 400V AC, it uses screw clamp terminals. Suitable for overcurrent and short-circuit protection in industrial control circuits and panel boards
20 A, A-curve, 4-pole supplementary protector rated 400 V AC / 72 V DC with 10 kA breaking capacity at 400 V AC. Screw clamp terminals. For DIN rail mounting in branch circuit and equipment overcurrent protection
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32 A, A-Curve, 4-pole supplementary protector for DIN rail mounting. Rated 400V AC and 72V DC with a breaking capacity of 10kA at 400V AC. Screw clamp terminals. UL1077 listed. Used for overcurrent and short-circuit protection in control circuits, panel building, and automation systems
40 A, A-Curve, 4-pole supplementary protector rated 72V DC and 10kA at 400V AC. Screw clamp terminals. UL1077 listed for DIN rail mounting. Used for overcurrent protection in control panels, HVAC, and machinery
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