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Siemens 5SY44106 B-Curve 4-Pole UL1077 Supplementary Protector - B-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SiemensB-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors

Siemens 5SY44106 B-Curve 4-Pole UL1077 Supplementary Protector

The SIEMENS IEC Supplementary Protector (SKU 5SY44106, MPN 5SY44106) is a B-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protector from the 5SY4 series. It is rated for 10 A Amps with a maximum AIR rating of…

SKU 3G-OTH-21779

Brand
Siemens
Item
5SY44106 B-Curve 4-Pole UL1077 Supplementary Protector
Category
B-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
Manufacturer Part Number
5SY44106
Series
5SY4
Type
10kA at 400V AC, Screw Clamp, B
AC
400V
DC
72V
Max. AIR Rating
10kA at 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 5SY44106, MPN 5SY44106) is a B-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protector from the 5SY4 series. It is rated for 10 A Amps with a maximum AIR rating of 10kA at 400V AC and a DC voltage rating of 72V DC. The unit features a Screw Clamp terminal connection.

Frequently Asked Questions

What is the SIEMENS 5SY44106 supplementary protector used for?

The SIEMENS 5SY44106 is a B-curve, 4-pole supplementary protector designed to protect branch circuits and sensitive equipment from overcurrent and short circuits. It is commonly used in industrial control panels, HVAC systems, and machinery across 14 industrial departments, including electrical and power transmission.

What are the specifications of the SIEMENS 5SY44106?

The SIEMENS 5SY44106 is rated for 10 A Amps, 72V DC, and 400V AC with a maximum AIR rating of 10kA at 400V AC. It features a screw clamp terminal connection, B-curve tripping characteristic, and is part of the 5SY4 series. It is a UL1077 DIN rail-mount supplementary protector.

Where to buy the SIEMENS 5SY44106 worldwide?

3G Electric supplies the SIEMENS 5SY44106 supplementary protector worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this and other Siemens industrial components.

How to install the SIEMENS 5SY44106 supplementary protector?

Install the SIEMENS 5SY44106 by snapping it onto a standard DIN rail. Ensure the supply is de-energized, then connect wires to the screw clamp terminals per the torque specifications in the datasheet. Verify the B-curve matches your load type and that the voltage rating (72V DC or 400V AC) is not exceeded.

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 b-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 features a B-curve trip characteristic and is rated for 13A at 400V AC and 72V DC. With a maximum interrupting rating of 10kA at 400V AC, it uses screw clamp terminals and mounts on DIN rail. Suitable for overcurrent protection in branch circuits and equipment within control panels and machinery
Siemens
This 4-pole supplementary protector features a B-curve trip characteristic and is rated for 13A at 400V AC and 72V DC. With a maximum interrupting rating of 10kA at 400V AC, it uses screw clamp terminals and mounts on DIN rail. Suitable for overcurrent protection in branch circuits and equipment within control panels and machinery
B-curve, 2-pole supplementary protector rated 25 A with screw clamp terminals. AC voltage rating 400 V AC, DC voltage rating 72 V DC, maximum interrupting rating 10 kA at 400 V AC. Suitable for overload and short-circuit protection in branch circuits, control panels, and equipment
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B-curve, 2-pole supplementary protector rated 25 A with screw clamp terminals. AC voltage rating 400 V AC, DC voltage rating 72 V DC, maximum interrupting rating 10 kA at 400 V AC. Suitable for overload and short-circuit protection in branch circuits, control panels, and equipment
B-curve, 2-pole supplementary protector rated 40 A, 400 V AC and 72 V DC, with a 10 kA interrupting rating at 400 V AC. Screw clamp terminals. Suitable for branch circuit and equipment protection in control panels and machinery
Siemens
B-curve, 2-pole supplementary protector rated 40 A, 400 V AC and 72 V DC, with a 10 kA interrupting rating at 400 V AC. Screw clamp terminals. Suitable for branch circuit and equipment protection in control panels and machinery
This Siemens supplementary protector is a B-curve, 2-pole device rated at 63 A with a maximum interrupting rating of 10 kA at 400 V AC. It is suitable for AC circuits up to 400 V and DC circuits up to 72 V, featuring screw clamp terminals. Typical applications include protection of branch circuits in control panels, HVAC equipment, and machinery against overloads and short circuits
Siemens
This Siemens supplementary protector is a B-curve, 2-pole device rated at 63 A with a maximum interrupting rating of 10 kA at 400 V AC. It is suitable for AC circuits up to 400 V and DC circuits up to 72 V, featuring screw clamp terminals. Typical applications include protection of branch circuits in control panels, HVAC equipment, and machinery against overloads and short circuits

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This 4-pole supplementary protector from the Siemens 5SY4 series features a B-curve trip characteristic for overcurrent and short-circuit protection. Rated 32A at 400V AC and 72V DC, with a maximum interrupting rating of 10kA at 400V AC. Screw-clamp terminals facilitate wiring in DIN rail-mounted applications such as control panels and machinery
Siemens
This 4-pole supplementary protector from the Siemens 5SY4 series features a B-curve trip characteristic for overcurrent and short-circuit protection. Rated 32A at 400V AC and 72V DC, with a maximum interrupting rating of 10kA at 400V AC. Screw-clamp terminals facilitate wiring in DIN rail-mounted applications such as control panels and machinery
This 4-pole supplementary protector from Siemens' 5SY4 series features a B-curve trip characteristic and is rated 63 A at 400 V AC and 72 V DC. With a maximum interrupting rating of 10 kA at 400 V AC, it provides overcurrent protection for branch circuits and equipment. The unit uses screw clamp terminals and is designed for DIN-rail mounting, complying with UL1077. Typical applications include protection of control circuits, industrial machinery, and HVAC equipment
Siemens
This 4-pole supplementary protector from Siemens' 5SY4 series features a B-curve trip characteristic and is rated 63 A at 400 V AC and 72 V DC. With a maximum interrupting rating of 10 kA at 400 V AC, it provides overcurrent protection for branch circuits and equipment. The unit uses screw clamp terminals and is designed for DIN-rail mounting, complying with UL1077. Typical applications include protection of control circuits, industrial machinery, and HVAC equipment
4-pole B-curve supplementary protector rated 50A, 400V AC (10kA interrupting capacity) and 72V DC. UL1077 listed for DIN rail mounting with screw clamp terminals. Used for overload and short-circuit protection in control circuits and panel applications
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4-pole B-curve supplementary protector rated 50A, 400V AC (10kA interrupting capacity) and 72V DC. UL1077 listed for DIN rail mounting with screw clamp terminals. Used for overload and short-circuit protection in control circuits and panel applications
This 4-pole supplementary protector from the Siemens 5SY4 series features a B-curve trip characteristic for overcurrent and short-circuit protection. Rated 16A, 400V AC (10kA interrupting capacity) and 72V DC, it uses screw clamp terminals and mounts on DIN rails. Suitable for branch circuit protection in control panels and automation systems
Siemens
This 4-pole supplementary protector from the Siemens 5SY4 series features a B-curve trip characteristic for overcurrent and short-circuit protection. Rated 16A, 400V AC (10kA interrupting capacity) and 72V DC, it uses screw clamp terminals and mounts on DIN rails. Suitable for branch circuit protection in control panels and automation systems
This 4-pole supplementary protector from Siemens features a B-curve trip characteristic and is rated for 20 A. It provides overcurrent protection with a maximum interrupting rating of 10 kA at 400 V AC and a DC voltage rating of 72 V. The unit uses screw clamp terminals and is designed for DIN rail mounting in control panels and branch circuit protection
Siemens
This 4-pole supplementary protector from Siemens features a B-curve trip characteristic and is rated for 20 A. It provides overcurrent protection with a maximum interrupting rating of 10 kA at 400 V AC and a DC voltage rating of 72 V. The unit uses screw clamp terminals and is designed for DIN rail mounting in control panels and branch circuit protection
B-curve, 4-pole supplementary protector rated 25 A. AC voltage rating 400 V, DC voltage rating 72 V. Maximum interrupting rating 10 kA at 400 V AC. Screw clamp terminals. For overcurrent and short-circuit protection in branch circuits and equipment
Siemens
B-curve, 4-pole supplementary protector rated 25 A. AC voltage rating 400 V, DC voltage rating 72 V. Maximum interrupting rating 10 kA at 400 V AC. Screw clamp terminals. For overcurrent and short-circuit protection in branch circuits and equipment
This 4-pole supplementary protector from the Siemens 5SY4 series features a B-curve trip characteristic and a rated current of 6 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 10 kA at 400 V AC and a DC voltage rating of 72 V DC, with screw clamp terminals for secure wiring
Siemens
This 4-pole supplementary protector from the Siemens 5SY4 series features a B-curve trip characteristic and a rated current of 6 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 10 kA at 400 V AC and a DC voltage rating of 72 V DC, with screw clamp terminals for secure wiring
This 4-pole supplementary protector from the Siemens 5SY4 series features a B-curve trip characteristic and a rated current of 40 A. It is designed for DIN rail mounting and provides overcurrent protection in branch circuits and control panels. With a maximum interrupting rating of 10 kA at 400 V AC and a DC voltage rating of 72 V, it is suitable for both AC and DC applications. The screw clamp terminals ensure secure wiring connections
Siemens
This 4-pole supplementary protector from the Siemens 5SY4 series features a B-curve trip characteristic and a rated current of 40 A. It is designed for DIN rail mounting and provides overcurrent protection in branch circuits and control panels. With a maximum interrupting rating of 10 kA at 400 V AC and a DC voltage rating of 72 V, it is suitable for both AC and DC applications. The screw clamp terminals ensure secure wiring connections