We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

3G Electric
SIEMENS IEC 5SY44258 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 5SY44258 D-Curve 4-Pole UL1077 Supplementary Protector

The SIEMENS IEC Supplementary Protector (MPN 5SY44258) is a 25 A, D-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector rated at 72V DC and 10kA at 400V AC. It features a Screw Clamp connection and is part of…

SKU 3G-OTH-128180

Brand
SIEMENS IEC
Item
5SY44258 D-Curve 4-Pole UL1077 Supplementary Protector
Part Number
5SY44258
Category
D-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors
Available to Order
Also known as:5SY44258SIEMENS IEC
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

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
5SY44258
Type
10kA at 400V AC, Screw Clamp, D
AC
400V
DC
72V

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The SIEMENS IEC Supplementary Protector (MPN 5SY44258) is a 25 A, D-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector rated at 72V DC and 10kA at 400V AC. It features a Screw Clamp connection and is part of the 5SY4 series from SIEMENS.

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 5SY44258 used for?

The SIEMENS 5SY44258 is a 25 A, D-Curve, 4-Pole supplementary protector used to protect industrial control circuits and equipment from overcurrents and short circuits. It mounts on a DIN rail and is suitable for 400V AC and 72V DC applications.

What are the specifications of the SIEMENS 5SY44258?

The SIEMENS 5SY44258 is rated 25 A, 72V DC, and 10kA at 400V AC. It features a D-Curve trip characteristic, 4 poles, a Screw Clamp connection, and is UL1077 listed for DIN rail mounting. It is part of the 5SY4 series from SIEMENS.

Where to buy the SIEMENS 5SY44258 supplementary protector worldwide?

3G Electric supplies the SIEMENS 5SY44258 supplementary protector worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this D-Curve, 4-Pole UL1077 protector.

How to install the SIEMENS 5SY44258 on a DIN rail?

To install the SIEMENS 5SY44258, snap it onto a standard 35 mm DIN rail. Ensure the rail is clean and the protector clips engage firmly. Wire using the Screw Clamp terminals per the torque specs in the manual. 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
Not sure this is the right part? Photo-identify it

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from SIEMENS IEC

View all SIEMENS IEC parts

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first