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SIEMENS IEC 5SY42138 D-Curve 2-Pole 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 5SY42138 D-Curve 2-Pole Supplementary Protector

The SIEMENS IEC Supplementary Protector (MPN 5SY42138) is a D-Curve, 2-Pole UL1077 DIN Rail-Mount supplementary protector rated at 13 A Amps. It features a voltage rating of 400V AC and 72V DC, with a breaking…

SKU 3G-OTH-127507

Brand
SIEMENS IEC
Item
5SY42138 D-Curve 2-Pole Supplementary Protector
Part Number
5SY42138
Category
D-Curve, 2-Pole UL1077 DIN Rail-Mount Supplementary Protectors
Available to Order
Also known as:5SY42138SIEMENS IEC
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

SIEMENS IEC
Manufacturer Part Number
5SY42138
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 (MPN 5SY42138) is a D-Curve, 2-Pole UL1077 DIN Rail-Mount supplementary protector rated at 13 A Amps. It features a voltage rating of 400V AC and 72V DC, with a breaking capacity of 10kA at 400V AC. The unit uses a Screw Clamp connection and is part of the 5SY4 series from SIEMENS.

Frequently Asked Questions

What is the SIEMENS IEC Supplementary Protector 5SY42138 used for?

The SIEMENS IEC Supplementary Protector 5SY42138 is used to protect branch circuits and equipment from overcurrent and short circuits in industrial control panels, HVAC systems, and automation applications. Its D-curve characteristic suits high-inrush loads like motors and transformers. It mounts on a standard DIN rail and meets UL1077 requirements.

What are the specifications of the SIEMENS 5SY42138 supplementary protector?

The SIEMENS 5SY42138 is a 2-pole, D-curve supplementary protector rated at 13 A, 400V AC and 72V DC. It has a breaking capacity of 10 kA at 400V AC and uses a screw clamp connection. It is part of the 5SY4 series and is designed for DIN-rail mounting under UL1077 standards.

Where to buy the SIEMENS 5SY42138 supplementary protector worldwide?

You can source the SIEMENS 5SY42138 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 times; we provide competitive pricing and reliable sourcing for this SIEMENS 5SY4 series component.

How to install the SIEMENS 5SY42138 supplementary protector?

To install the SIEMENS 5SY42138, snap it onto a standard 35 mm DIN rail. Ensure the supply is de-energized. Connect conductors using the screw clamp terminals, tightening to the torque specified in the SIEMENS datasheet. Verify the D-curve matches your load's inrush characteristics. Always follow local electrical codes and SIEMENS installation guidelines.

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
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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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