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Siemens 5SY44206 B-Curve 4-Pole Supplementary Protector - B-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SiemensB-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors

Siemens 5SY44206 B-Curve 4-Pole Supplementary Protector

The SIEMENS IEC Supplementary Protector (SKU 5SY44206, MPN 5SY44206) is a B-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector rated at 20 A Amps. It features a Max. AIR Rating of 10kA at 400V AC, a DC…

SKU 3G-OTH-21738

Brand
Siemens
Item
5SY44206 B-Curve 4-Pole 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
5SY44206
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 5SY44206, MPN 5SY44206) is a B-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector rated at 20 A Amps. It features a Max. AIR Rating of 10kA at 400V AC, a DC Voltage Rating of 72V DC, and a Screw Clamp terminal connection. This device is part of the 5SY4 series and is designed for overcurrent protection in industrial control panels.

Frequently Asked Questions

What is the SIEMENS 5SY44206 supplementary protector used for?

The SIEMENS 5SY44206 is a B-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector rated at 20 A Amps. It provides overcurrent protection in industrial control panels, safeguarding branch circuits and sensitive equipment against short circuits and overloads up to 10kA at 400V AC.

What are the specifications of the SIEMENS 5SY44206?

The SIEMENS 5SY44206 is a 20 A Amps, B-Curve, 4-Pole supplementary protector with a Max. AIR Rating of 10kA at 400V AC and a DC Voltage Rating of 72V DC. It features a Screw Clamp terminal connection and is part of the 5SY4 series, designed for DIN Rail mounting.

Where to buy the SIEMENS 5SY44206 worldwide?

You can source the SIEMENS 5SY44206 from 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 on this supplementary protector.

How to install the SIEMENS 5SY44206 supplementary protector?

Install the SIEMENS 5SY44206 by snapping it onto a DIN rail in a control panel. Ensure the circuit is de-energized, connect wires to the Screw Clamp terminals with proper torque, and verify the B-Curve trip characteristic matches your load. Follow standard electrical safety practices and local 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 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
SIEMENS IEC Supplementary Protector: 32 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, B, 400V AC (MPN 5SY44326)
Siemens
SIEMENS IEC Supplementary Protector: 32 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, B, 400V AC (MPN 5SY44326)
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
Siemens
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
SIEMENS IEC Supplementary Protector: 40 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42406)
Siemens
SIEMENS IEC Supplementary Protector: 40 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42406)
B-curve, 2-pole supplementary protector rated 10 A, 400V AC and 72V DC with a maximum interrupting rating of 10kA at 400V AC. Features screw clamp terminals and is designed for DIN-rail mounting. Suitable for overload and short-circuit protection in branch circuits and control panels
Siemens
B-curve, 2-pole supplementary protector rated 10 A, 400V AC and 72V DC with a maximum interrupting rating of 10kA at 400V AC. Features screw clamp terminals and is designed for DIN-rail mounting. Suitable for overload and short-circuit protection in branch circuits and control panels

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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
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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
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
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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 IEC Supplementary Protector: 10 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, B, 400V AC (MPN 5SY44106)
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SIEMENS IEC Supplementary Protector: 10 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, B, 400V AC (MPN 5SY44106)
SIEMENS IEC Supplementary Protector: 63 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, B, 400V AC (MPN 5SY44636)
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SIEMENS IEC Supplementary Protector: 63 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, B, 400V AC (MPN 5SY44636)
SIEMENS IEC Supplementary Protector: 50 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, B, 400V AC (MPN 5SY44506)
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SIEMENS IEC Supplementary Protector: 50 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, B, 400V AC (MPN 5SY44506)
SIEMENS IEC Supplementary Protector: 16 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, B, 400V AC (MPN 5SY44166)
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SIEMENS IEC Supplementary Protector: 16 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, B, 400V AC (MPN 5SY44166)