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SIEMENS IEC Supplementary Protector: 20 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp - D-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SIEMENS IECD-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors

SIEMENS IEC Supplementary Protector: 20 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp

The SIEMENS IEC Supplementary Protector (SKU 5SY44208, MPN 5SY44208) is a 20 A, D-Curve, 4-pole UL1077 DIN rail-mount supplementary protector from the 5SY4 series. It features a 72V DC rating, a 10kA interrupting…

SKU 3G-OTH-154298

Brand
SIEMENS IEC
Item
Supplementary Protector: 20 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp
Category
D-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors
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Technical Specifications

SIEMENS IEC
Manufacturer Part Number
5SY44208
Type
10kA at 400V AC, Screw Clamp, D
AC
400V
DC
72V

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

Product Description

The SIEMENS IEC Supplementary Protector (SKU 5SY44208, MPN 5SY44208) is a 20 A, D-Curve, 4-pole UL1077 DIN rail-mount supplementary protector from the 5SY4 series. It features a 72V DC rating, a 10kA interrupting capacity at 400V AC, and screw clamp terminals.

Frequently Asked Questions

What is the SIEMENS IEC Supplementary Protector 5SY44208 used for?

The SIEMENS IEC Supplementary Protector 5SY44208 is used for overcurrent protection in industrial control panels, HVAC equipment, and machinery. Its D-curve trip characteristic handles high inrush loads like motors and transformers. It mounts on DIN rails and is UL1077 listed for branch circuit protection.

What are the specifications of the SIEMENS 5SY44208 supplementary protector?

The SIEMENS 5SY44208 is a 20 A, 4-pole supplementary protector with a D-curve. It is rated 400V AC and 72V DC, with a 10kA interrupting capacity at 400V AC. Terminals are screw clamp type. It is part of the 5SY4 series and designed for DIN rail mounting per UL1077.

Where to buy the SIEMENS 5SY44208 supplementary protector worldwide?

You can source the SIEMENS 5SY44208 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 on this item.

How to install the SIEMENS 5SY44208 supplementary protector on a DIN rail?

To install the SIEMENS 5SY44208, snap it onto a standard 35 mm DIN rail until it locks. Connect phase conductors to screw clamp terminals using a torque screwdriver per SIEMENS specifications. Ensure the D-curve matches your load's inrush current. Always de-energize the circuit before installation.

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 d-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: 63 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44638)
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 63 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44638)
SIEMENS IEC Supplementary Protector: 1 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44018)
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 1 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44018)
SIEMENS IEC Supplementary Protector: 10 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44108)
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 10 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44108)
SIEMENS IEC Supplementary Protector: 40 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44408)
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 40 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44408)
SIEMENS IEC Supplementary Protector: 4 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44048)
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 4 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44048)
SIEMENS IEC Supplementary Protector: 2 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44028)
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 2 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44028)

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This 4-pole supplementary protector features a D-curve trip characteristic for overcurrent protection in circuits with high inrush loads. Rated 16 A, 400V AC and 72V DC, with a 10kA interrupting capacity at 400V AC. Screw clamp terminals facilitate wiring. Suitable for DIN rail mounting in control panels and equipment
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This 4-pole supplementary protector features a D-curve trip characteristic for overcurrent protection in circuits with high inrush loads. Rated 16 A, 400V AC and 72V DC, with a 10kA interrupting capacity at 400V AC. Screw clamp terminals facilitate wiring. Suitable for DIN rail mounting in control panels and equipment
This 4-pole supplementary protector features a D-curve trip characteristic for high inrush currents. Rated 0.3 A, 400V AC (10kA breaking capacity) and 72V DC, with screw clamp terminals. Suitable for overcurrent and short-circuit protection in control panels, HVAC, and automation systems where branch-circuit protection is not required
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This 4-pole supplementary protector features a D-curve trip characteristic for high inrush currents. Rated 0.3 A, 400V AC (10kA breaking capacity) and 72V DC, with screw clamp terminals. Suitable for overcurrent and short-circuit protection in control panels, HVAC, and automation systems where branch-circuit protection is not required
SIEMENS IEC Supplementary Protector: 32 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44328)
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SIEMENS IEC Supplementary Protector: 32 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44328)
SIEMENS IEC Supplementary Protector: 6 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44068)
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SIEMENS IEC Supplementary Protector: 6 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44068)
SIEMENS IEC Supplementary Protector: 50 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44508)
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SIEMENS IEC Supplementary Protector: 50 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44508)
SIEMENS IEC Supplementary Protector: 13 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44138)
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SIEMENS IEC Supplementary Protector: 13 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44138)
SIEMENS IEC Supplementary Protector: 25 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44258)
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SIEMENS IEC Supplementary Protector: 25 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44258)
SIEMENS IEC Supplementary Protector: 8 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44088)
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SIEMENS IEC Supplementary Protector: 8 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44088)