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

3G Electric
RFQ CartGet a QuoteSign inSign up
SIEMENS IEC Supplementary Protector: 50 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: 50 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp

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
Supplementary Protector: 50 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp
Category
D-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors
Available to Order
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
5SY44508
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 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.

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 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
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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Compatible alternatives & equivalents

Cross-referenced by specification & description
SIEMENS IEC Supplementary Protector: 25 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44258)
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 25 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44258)
SIEMENS IEC Supplementary Protector: 20 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44208)
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 20 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44208)
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: 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: 6 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44068)
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 6 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44068)
SIEMENS IEC Supplementary Protector: 8 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44088)
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 8 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44088)

More from SIEMENS IEC

View all SIEMENS IEC parts →
4-pole D-curve supplementary protector rated 4 A, 400 V AC / 72 V DC, with 10 kA breaking capacity at 400 V AC. Screw clamp terminals. UL1077 listed for branch-circuit protection in industrial control panels, HVAC, and automation systems. DIN rail mount
SIEMENS IEC
4-pole D-curve supplementary protector rated 4 A, 400 V AC / 72 V DC, with 10 kA breaking capacity at 400 V AC. Screw clamp terminals. UL1077 listed for branch-circuit protection in industrial control panels, HVAC, and automation systems. DIN rail mount
4-pole D-curve supplementary protector rated 2 A, 400 V AC / 72 V DC, with 10 kA interrupting capacity at 400 V AC. Screw clamp terminals, DIN rail mount, UL1077 listed. Suitable for overcurrent protection in control panels and equipment where high inrush currents occur
SIEMENS IEC
4-pole D-curve supplementary protector rated 2 A, 400 V AC / 72 V DC, with 10 kA interrupting capacity at 400 V AC. Screw clamp terminals, DIN rail mount, UL1077 listed. Suitable for overcurrent protection in control panels and equipment where high inrush currents occur
4-pole D-curve supplementary protector rated 63 A, 400V AC and 72V DC, with 10kA interrupting capacity at 400V AC. Screw clamp terminals. UL1077 listed for overcurrent protection in control panels, HVAC, and machinery
SIEMENS IEC
4-pole D-curve supplementary protector rated 63 A, 400V AC and 72V DC, with 10kA interrupting capacity at 400V AC. Screw clamp terminals. UL1077 listed for overcurrent protection in control panels, HVAC, and machinery
40 A, D-curve, 4-pole supplementary protector from the 5SY4 series. Rated 72V DC and 10kA at 400V AC with screw clamp terminals. UL1077 listed for DIN rail mounting. Used for overcurrent protection in industrial control panels, HVAC equipment, and machinery where high inrush loads occur
SIEMENS IEC
40 A, D-curve, 4-pole supplementary protector from the 5SY4 series. Rated 72V DC and 10kA at 400V AC with screw clamp terminals. UL1077 listed for DIN rail mounting. Used for overcurrent protection in industrial control panels, HVAC equipment, and machinery where high inrush loads occur
This 4-pole supplementary protector features a D-curve trip characteristic for overcurrent protection in circuits with high inrush currents, such as motor and transformer loads. Rated 1.6 A, it operates at 400V AC (10kA interrupting capacity) and 72V DC. The screw clamp terminals facilitate wiring, and the DIN rail mount enables compact installation in control panels and machinery
SIEMENS IEC
This 4-pole supplementary protector features a D-curve trip characteristic for overcurrent protection in circuits with high inrush currents, such as motor and transformer loads. Rated 1.6 A, it operates at 400V AC (10kA interrupting capacity) and 72V DC. The screw clamp terminals facilitate wiring, and the DIN rail mount enables compact installation in control panels and machinery
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
SIEMENS IEC
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
SIEMENS IEC
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)
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 32 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, D, 400V AC (MPN 5SY44328)