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SIEMENS IEC 5SY44255 Supplementary Protector - A-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SIEMENS IECA-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors

SIEMENS IEC 5SY44255 Supplementary Protector

The SIEMENS IEC Supplementary Protector is a 25 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…

SKU 3G-OTH-127949

Brand
SIEMENS IEC
Item
5SY44255 Supplementary Protector
Category
A-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

SIEMENS IEC
Manufacturer Part Number
5SY44255
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 is a 25 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. This device provides overcurrent protection for branch circuits in industrial control panels and equipment.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the SIEMENS IEC Supplementary Protector 5SY44255 used for?

The SIEMENS IEC Supplementary Protector 5SY44255 provides overcurrent protection for branch circuits in industrial control panels and equipment. It is a 25 A, A-Curve, 4-Pole UL1077 DIN Rail-Mount device rated for 72V DC and 400V AC, suitable for global industrial applications.

What are the specifications of the SIEMENS 5SY44255 supplementary protector?

The SIEMENS 5SY44255 is a 25 A, A-Curve, 4-Pole supplementary protector from the 5SY4 series. It has a DC rating of 72V DC, an AC rating of 400V AC, and 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 5SY44255 supplementary protector worldwide?

You can source the SIEMENS 5SY44255 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 SIEMENS-branded device.

How to install the SIEMENS 5SY44255 supplementary protector on a DIN rail?

To install the SIEMENS 5SY44255, snap the 4-Pole device onto a standard DIN rail until it locks. Connect wires using the screw clamp terminals, ensuring torque per SIEMENS specifications. Always de-energize the circuit before installation and follow local electrical codes for overcurrent protection.

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
A 6 A, A-curve, 4-pole supplementary protector rated 400V AC / 72V DC with a 10kA interrupting capacity at 400V AC. Features screw clamp terminals and is designed for DIN rail mounting per UL1077. Suitable for overcurrent and short-circuit protection in industrial control circuits and automation panels
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A 6 A, A-curve, 4-pole supplementary protector rated 400V AC / 72V DC with a 10kA interrupting capacity at 400V AC. Features screw clamp terminals and is designed for DIN rail mounting per UL1077. Suitable for overcurrent and short-circuit protection in industrial control circuits and automation panels
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This 4-pole supplementary protector is rated 13 A with A-curve tripping characteristic. It is UL1077 listed for 400 V AC (10 kA interrupting capacity) and 72 V DC. Screw clamp terminals facilitate wiring. Typical applications include branch circuit protection in industrial control panels, motor control centers, and automation systems
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This 4-pole supplementary protector is rated 13 A with A-curve tripping characteristic. It is UL1077 listed for 400 V AC (10 kA interrupting capacity) and 72 V DC. Screw clamp terminals facilitate wiring. Typical applications include branch circuit protection in industrial control panels, motor control centers, and automation systems
This 4-pole supplementary protector from the 5SY4 series features an A-curve trip characteristic for resistive loads and low-inrush circuits. Rated 16A, 400V AC/72V DC with a breaking capacity of 10kA at 400V AC, it uses screw clamp terminals. Designed for DIN rail mounting, it provides overcurrent protection in branch circuits where a full circuit breaker is not required
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This 4-pole supplementary protector from the 5SY4 series features an A-curve trip characteristic for resistive loads and low-inrush circuits. Rated 16A, 400V AC/72V DC with a breaking capacity of 10kA at 400V AC, it uses screw clamp terminals. Designed for DIN rail mounting, it provides overcurrent protection in branch circuits where a full circuit breaker is not required

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This 4-pole supplementary protector from the 5SY4 series features an A-Curve trip characteristic and a rated current of 2 A. It is UL1077 recognized for overcurrent protection in industrial control circuits and equipment. The device has a breaking capacity of 10 kA at 400 V AC and is rated for 72 V DC. Terminals are screw clamp type for secure wiring
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This 3 A, A-Curve, 4-pole supplementary protector is UL1077 listed for DIN rail mounting. Rated 400V AC and 72V DC with a breaking capacity of 10kA at 400V AC, it features screw clamp terminals. Suitable for overcurrent and short-circuit protection in branch circuits and control equipment
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4-pole supplementary protector with A-Curve trip characteristic, rated 10A, 400V AC / 72V DC, 10kA breaking capacity at 400V AC. Screw clamp terminals. For overcurrent protection in control panels, HVAC, and machinery
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This 4-pole supplementary protector from the 5SY4 series features an A-curve trip characteristic and is UL1077 listed for DIN rail mounting. Rated 50 A at 400V AC and 72V DC with a breaking capacity of 10kA at 400V AC, it uses screw clamp terminals. Suitable for overcurrent and short-circuit protection in industrial control circuits and panel boards
20 A, A-curve, 4-pole supplementary protector rated 400 V AC / 72 V DC with 10 kA breaking capacity at 400 V AC. Screw clamp terminals. For DIN rail mounting in branch circuit and equipment overcurrent protection
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32 A, A-Curve, 4-pole supplementary protector for DIN rail mounting. Rated 400V AC and 72V DC with a breaking capacity of 10kA at 400V AC. Screw clamp terminals. UL1077 listed. Used for overcurrent and short-circuit protection in control circuits, panel building, and automation systems
40 A, A-Curve, 4-pole supplementary protector rated 72V DC and 10kA at 400V AC. Screw clamp terminals. UL1077 listed for DIN rail mounting. Used for overcurrent protection in control panels, HVAC, and machinery
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