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SIEMENS IEC 5SY44508 D-Curve 4-Pole UL1077 Supplementary Protector - D-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SIEMENS IECD-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors

SIEMENS IEC 5SY44508 D-Curve 4-Pole UL1077 Supplementary Protector

The SIEMENS IEC Supplementary Protector (MPN 5SY44508) is a 50 A, D-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 a Screw Clamp…

SKU 3G-OTH-154296

Brand
SIEMENS IEC
Item
5SY44508 D-Curve 4-Pole UL1077 Supplementary Protector
Part Number
5SY44508
Category
D-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors
Available to Order
Also known as:5SY44508SIEMENS IEC
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Local office
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Phone
+65 8878 8355
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Technical Specifications

SIEMENS IEC
Manufacturer Part Number
5SY44508
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 (MPN 5SY44508) is a 50 A, D-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 a Screw Clamp connection.

Frequently Asked Questions

What is the SIEMENS 5SY44508 supplementary protector used for?

The SIEMENS 5SY44508 is a 50 A, D-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector used to protect industrial control circuits and equipment from overcurrents and short circuits. It is suitable for applications requiring DC ratings up to 72V DC and AC ratings up to 400V AC.

What are the specifications of the SIEMENS 5SY44508?

The SIEMENS 5SY44508 is a 50 A, D-Curve, 4-Pole supplementary protector from the 5SY4 series. It is rated for 72V DC and 10kA at 400V AC, with a Screw Clamp connection. It is UL1077 listed and mounts on a standard DIN rail.

Where to buy the SIEMENS 5SY44508 worldwide?

3G Electric supplies the SIEMENS 5SY44508 supplementary protector 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 genuine SIEMENS part.

How to install the SIEMENS 5SY44508 on a DIN rail?

To install the SIEMENS 5SY44508, snap it onto a standard 35 mm DIN rail. Ensure the rail is clean and the protector is oriented correctly. Use a screwdriver to tighten the Screw Clamp terminals to the recommended torque. Always de-energize the circuit before installation.

Used in

Common applications for SIEMENS IEC
Industrial control panels — Siemens 5SY4 supplementary protectors provide overcurrent protection for PLC I/O, relays, and control transformers.
HVAC equipment — 5SY4 series protectors safeguard control circuits in air handling units, chillers, and boilers against overcurrent.
Pump systems — Siemens IEC supplementary protectors protect motor control circuits and instrumentation in water and process pump stations.
Renewable energy — 5SY4 DC-rated protectors are used in solar combiner boxes and battery storage systems for control circuit protection.
Machine tools — 5SY4 supplementary protectors with D-Curve handle high inrush currents from spindle drives and servo amplifiers.
Building automation — Siemens IEC protectors protect control panels for lighting, security, and access systems in commercial buildings.
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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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