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SIEMENS IEC 5SY42108 D-Curve 2-Pole UL1077 Supplementary Protector - D-Curve, 2-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SIEMENS IECD-Curve, 2-Pole UL1077 DIN Rail-Mount Supplementary Protectors

SIEMENS IEC 5SY42108 D-Curve 2-Pole UL1077 Supplementary Protector

The SIEMENS IEC Supplementary Protector (SKU 3G-OTH-127419) is a D-curve, 2-pole UL1077 DIN rail-mount supplementary protector rated at 10 A amps. It features a 400V AC voltage rating with a 10kA interrupting…

SKU 3G-OTH-127419

Brand
SIEMENS IEC
Item
5SY42108 D-Curve 2-Pole UL1077 Supplementary Protector
Category
D-Curve, 2-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
5SY42108
Type
10kA at 400V AC, Screw Clamp, 5SY4
AC
400V
DC
72V

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

Product Description

The SIEMENS IEC Supplementary Protector (SKU 3G-OTH-127419) is a D-curve, 2-pole UL1077 DIN rail-mount supplementary protector rated at 10 A amps. It features a 400V AC voltage rating with a 10kA interrupting capacity at 400V AC, and a 72V DC rating. The unit uses screw-clamp terminals and is part of the 5SY4 series (MPN 5SY42108).

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 5SY42108 used for?

The SIEMENS IEC Supplementary Protector 5SY42108 is a D-curve, 2-pole UL1077 device used to protect branch circuits and equipment from overcurrent and short circuits in industrial control panels, HVAC systems, and automation applications. It is rated 10 A at 400V AC and 72V DC.

What are the specifications of the SIEMENS 5SY42108 supplementary protector?

The SIEMENS 5SY42108 is a D-curve, 2-pole supplementary protector rated 10 A, 400V AC with a 10kA interrupting capacity at 400V AC, and 72V DC. It features screw-clamp terminals, is part of the 5SY4 series, and mounts on a DIN rail per UL1077 standards.

Where to buy the SIEMENS 5SY42108 supplementary protector worldwide?

You can source the SIEMENS 5SY42108 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 5SY4 series device.

How to install a SIEMENS 5SY4 supplementary protector on a DIN rail?

To install the SIEMENS 5SY42108, snap the device onto a standard 35 mm DIN rail until it locks. Connect phase and load wires to the screw-clamp terminals, tightening to the torque specified on the label. Ensure the D-curve matches the inrush current of your load for proper coordination.

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, 2-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
This 20 A, D-curve, 2-pole supplementary protector is rated for 400V AC with a breaking capacity of 10kA at 400V AC and 72V DC. It features screw-clamp terminals and is designed for DIN-rail mounting. Suitable for overcurrent and short-circuit protection in industrial control circuits, HVAC equipment, and motor branch circuits
SIEMENS IEC
This 20 A, D-curve, 2-pole supplementary protector is rated for 400V AC with a breaking capacity of 10kA at 400V AC and 72V DC. It features screw-clamp terminals and is designed for DIN-rail mounting. Suitable for overcurrent and short-circuit protection in industrial control circuits, HVAC equipment, and motor branch circuits
SIEMENS IEC Supplementary Protector: 8 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42088)
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 8 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42088)
SIEMENS IEC Supplementary Protector: 2 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42028)
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 2 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42028)
D-curve, 2-pole supplementary protector rated 1.6 A, 400 V AC (10 kA breaking capacity) and 72 V DC. Features screw clamp terminals and DIN rail mounting. Suitable for overcurrent protection in control panels, HVAC, and machinery where high inrush currents occur
SIEMENS IEC
D-curve, 2-pole supplementary protector rated 1.6 A, 400 V AC (10 kA breaking capacity) and 72 V DC. Features screw clamp terminals and DIN rail mounting. Suitable for overcurrent protection in control panels, HVAC, and machinery where high inrush currents occur
SIEMENS IEC Supplementary Protector: 0.5 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42058)
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 0.5 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42058)
SIEMENS IEC Supplementary Protector: 0.3 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42148)
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 0.3 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42148)

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D-curve, 2-pole UL1077 supplementary protector rated 6 A. Operates at 400V AC with 10kA breaking capacity and 72V DC. Screw-clamp terminals. Provides overcurrent protection for branch circuits and equipment in industrial control panels
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25 A, D-curve, 2-pole supplementary protector rated 400V AC and 72V DC with 10kA breaking capacity at 400V AC. Screw clamp terminals. For DIN rail mounting. Used in industrial control circuits, HVAC equipment, and motor starters to protect against overcurrents and short circuits, suitable for loads with high inrush currents such as transformers and solenoid valves
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25 A, D-curve, 2-pole supplementary protector rated 400V AC and 72V DC with 10kA breaking capacity at 400V AC. Screw clamp terminals. For DIN rail mounting. Used in industrial control circuits, HVAC equipment, and motor starters to protect against overcurrents and short circuits, suitable for loads with high inrush currents such as transformers and solenoid valves
This 4 A, D-curve, 2-pole supplementary protector from the 5SY4 series 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. Typical applications include overcurrent and short-circuit protection in industrial control circuits, HVAC equipment, and motor branch circuits
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This 4 A, D-curve, 2-pole supplementary protector from the 5SY4 series 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. Typical applications include overcurrent and short-circuit protection in industrial control circuits, HVAC equipment, and motor branch circuits
D-curve, 2-pole supplementary protector rated at 3 A, 400 V AC and 72 V DC with a breaking capacity of 10 kA at 400 V AC. Features screw clamp terminals and is designed for DIN rail mounting. Suitable for overcurrent protection in industrial control circuits and applications with high inrush currents such as motors and transformers
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D-curve, 2-pole supplementary protector rated at 3 A, 400 V AC and 72 V DC with a breaking capacity of 10 kA at 400 V AC. Features screw clamp terminals and is designed for DIN rail mounting. Suitable for overcurrent protection in industrial control circuits and applications with high inrush currents such as motors and transformers
This D-curve, 2-pole supplementary protector is rated at 1 A with a voltage rating of 400V AC and 72V DC. It has a breaking capacity of 10kA at 400V AC and features a screw-clamp connection. Suitable for protecting branch circuits and equipment in industrial control panels, HVAC systems, and automation applications where high inrush currents occur
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This D-curve, 2-pole supplementary protector is rated at 1 A with a voltage rating of 400V AC and 72V DC. It has a breaking capacity of 10kA at 400V AC and features a screw-clamp connection. Suitable for protecting branch circuits and equipment in industrial control panels, HVAC systems, and automation applications where high inrush currents occur
D-curve, 2-pole supplementary protector rated 50 A, 400 V AC / 72 V DC, with 10 kA breaking capacity at 400 V AC. Screw-clamp terminals. Suitable for overcurrent and short-circuit protection in branch circuits and equipment, particularly where high inrush currents occur
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D-curve, 2-pole supplementary protector rated 50 A, 400 V AC / 72 V DC, with 10 kA breaking capacity at 400 V AC. Screw-clamp terminals. Suitable for overcurrent and short-circuit protection in branch circuits and equipment, particularly where high inrush currents occur
This 2-pole supplementary protector features a D-curve trip characteristic for high-inrush loads. Rated 13 A, 400V AC and 72V DC with a breaking capacity of 10kA at 400V AC. Screw clamp terminals. Suitable for overcurrent and short-circuit protection in branch circuits and equipment
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This 2-pole supplementary protector features a D-curve trip characteristic for high-inrush loads. Rated 13 A, 400V AC and 72V DC with a breaking capacity of 10kA at 400V AC. Screw clamp terminals. Suitable for overcurrent and short-circuit protection in branch circuits and equipment