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SIEMENS IEC Supplementary Protector: 50 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp - A-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SIEMENS IECA-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors

SIEMENS IEC Supplementary Protector: 50 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp

The SIEMENS IEC Supplementary Protector (MPN 5SY44505) is a 50 A, A-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series. It is rated for 72V DC and has a breaking capacity of 10kA at 400V…

SKU 3G-OTH-127901

Brand
SIEMENS IEC
Item
Supplementary Protector: 50 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp
Category
A-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors
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Technical Specifications

SIEMENS IEC
Manufacturer Part Number
5SY44505
Type
10kA at 400V AC, Screw Clamp, A
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 5SY44505) is a 50 A, A-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series. It is rated for 72V DC and has a breaking capacity of 10kA at 400V AC, with screw clamp terminals.

Frequently Asked Questions

What is the SIEMENS IEC Supplementary Protector 5SY44505 used for?

The SIEMENS IEC Supplementary Protector 5SY44505 is used to protect industrial control circuits and equipment from overcurrent and short circuits. It is suitable for DIN rail mounting in panel boards, motor control centers, and automation systems where UL1077 supplementary protection is required.

What are the specifications of the SIEMENS 5SY44505 supplementary protector?

The SIEMENS 5SY44505 is a 50 A, A-Curve, 4-pole supplementary protector from the 5SY4 series. It is rated for 72V DC and 400V AC, with a breaking capacity of 10kA at 400V AC. Terminals are screw clamp type, and it is UL1077 listed for DIN rail mounting.

Where to buy the SIEMENS 5SY44505 supplementary protector worldwide?

You can source the SIEMENS 5SY44505 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 5SY44505 supplementary protector on a DIN rail?

To install the SIEMENS 5SY44505, 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 specified torque. Always de-energize the circuit before installation and follow local electrical codes.

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
SIEMENS IEC Supplementary Protector: 20 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, A, 400V AC (MPN 5SY44205)
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 20 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, A, 400V AC (MPN 5SY44205)
SIEMENS IEC Supplementary Protector: 63 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, A, 400V AC (MPN 5SY44635)
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 63 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, A, 400V AC (MPN 5SY44635)
SIEMENS IEC Supplementary Protector: 25 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, A, 400V AC (MPN 5SY44255)
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 25 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, A, 400V AC (MPN 5SY44255)
SIEMENS IEC Supplementary Protector: 10 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, A, 400V AC (MPN 5SY44105)
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 10 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, A, 400V AC (MPN 5SY44105)
SIEMENS IEC Supplementary Protector: 3 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, A, 400V AC (MPN 5SY44035)
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 3 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, A, 400V AC (MPN 5SY44035)

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