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Siemens Supplementary Protector: 63 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp - D-Curve, 3-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SiemensD-Curve, 3-Pole UL1077 DIN Rail-Mount Supplementary Protectors

Siemens Supplementary Protector: 63 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp

The SIEMENS IEC Supplementary Protector (SKU 5SY43638, MPN 5SY43638) is a D-Curve, 3-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series, rated at 63 A Amps. It features a Max. AIR Rating of 10kA…

SKU 3G-OTH-20685

Brand
Siemens
Item
Supplementary Protector: 63 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp
Category
D-Curve, 3-Pole UL1077 DIN Rail-Mount Supplementary Protectors
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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
Manufacturer Part Number
5SY43638
Series
5SY4
Type
10kA at 400V AC, Screw Clamp, 5SY4
AC
400V
DC
72V
Max. AIR Rating
10kA at 400V AC
AC Voltage Rating
400V AC
DC Voltage Rating
72V DC
Terminal Connection
Screw Clamp

Technical Documents

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

Product Description

The SIEMENS IEC Supplementary Protector (SKU 5SY43638, MPN 5SY43638) is a D-Curve, 3-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series, rated at 63 A Amps. It features a Max. AIR Rating of 10kA at 400V AC, AC Voltage Rating of 400V AC, and DC Voltage Rating of 72V DC, with a Screw Clamp terminal connection.

Frequently Asked Questions

What is the SIEMENS 5SY43638 supplementary protector used for?

The SIEMENS 5SY43638 is a D-curve, 3-pole supplementary protector designed to protect industrial control circuits and equipment from overloads and short circuits. It is commonly used in panel building, machine control, and automation applications where UL1077 listing is required.

What are the specifications of the SIEMENS 5SY43638?

The SIEMENS 5SY43638 is rated at 63 A Amps with a max. AIR rating of 10kA at 400V AC. It has an AC voltage rating of 400V AC and a DC voltage rating of 72V DC. The terminal connection is screw clamp, and it is part of the 5SY4 series.

Where to buy the SIEMENS 5SY43638 worldwide?

You can source the SIEMENS 5SY43638 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.

How to install the SIEMENS 5SY43638 supplementary protector?

Install the SIEMENS 5SY43638 by snapping it onto a standard DIN rail. Ensure the circuit is de-energized, then connect wires to the screw clamp terminals per the torque specifications in the datasheet. Always follow local electrical codes and manufacturer guidelines.

Used in

Common applications for Siemens
District cooling plants — LME73 + RWF55 for condenser-water modulation
Inflight catering and food-processing steam boilers — LMG22 with SQN90 air-fuel cross-damper
Hospital steam-plant redundancy — LME41 with QRA2 UV flame detection for dual-fuel boilers
Semiconductor fab process heat — LME23 and SKP55 gas valves on hot-oil heater skids
Container-terminal reefer-deck heating — LMG22 retrofit onto legacy burner racks

Siemens Products

3G Electric supplies Siemens d-curve, 3-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
SIEMENS IEC Supplementary Protector: 50 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY43508)
Siemens
SIEMENS IEC Supplementary Protector: 50 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY43508)
SIEMENS IEC Supplementary Protector: 16 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY43168)
Siemens
SIEMENS IEC Supplementary Protector: 16 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY43168)
SIEMENS IEC Supplementary Protector: 2 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY43028)
Siemens
SIEMENS IEC Supplementary Protector: 2 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY43028)
SIEMENS IEC Supplementary Protector: 0.3 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY43148)
Siemens
SIEMENS IEC Supplementary Protector: 0.3 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY43148)
SIEMENS IEC Supplementary Protector: 25 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY43258)
Siemens
SIEMENS IEC Supplementary Protector: 25 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY43258)
SIEMENS IEC Supplementary Protector: 1 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY43018)
Siemens
SIEMENS IEC Supplementary Protector: 1 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY43018)

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Three-pole supplementary protector with D-curve trip characteristic for overload and short-circuit protection. Rated 0.5 A, 400 V AC (10 kA interrupting capacity) and 72 V DC. Screw clamp terminals. DIN rail mount. UL1077 recognized. Suitable for branch circuit protection in control panels and automation systems
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3-pole D-curve supplementary protector rated 8 A, 400V AC (72V DC), with 10kA interrupting capacity at 400V AC. UL1077 listed for DIN-rail mounting. Screw clamp terminals. Suitable for overcurrent and short-circuit protection in control circuits and equipment branch protection
This 3-pole supplementary protector from the Siemens 5SY4 series features a D-curve trip characteristic and is rated for 10 A continuous current. It is suitable for AC circuits up to 400 V and DC circuits up to 72 V, with a maximum interrupting rating of 10 kA at 400 V AC. The unit uses screw clamp terminals for wiring and is designed for DIN rail mounting, commonly used to protect control circuits, HVAC equipment, and motor starters against overcurrents and short circuits
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This 3-pole supplementary protector from the Siemens 5SY4 series features a D-curve trip characteristic and is rated for 10 A continuous current. It is suitable for AC circuits up to 400 V and DC circuits up to 72 V, with a maximum interrupting rating of 10 kA at 400 V AC. The unit uses screw clamp terminals for wiring and is designed for DIN rail mounting, commonly used to protect control circuits, HVAC equipment, and motor starters against overcurrents and short circuits
D-Curve, 3-pole supplementary protector rated 20 A, 400 V AC and 72 V DC, with a maximum interrupting rating of 10 kA at 400 V AC. Features screw clamp terminals and mounts on DIN rail. Suitable for overcurrent and short-circuit protection in branch circuits and equipment within industrial control panels, HVAC systems, and automation applications
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3-pole supplementary protector with D-curve trip characteristic, rated 40 A. AC voltage rating 400 V, DC voltage rating 72 V, maximum interrupting rating 10 kA at 400 V AC. Screw clamp terminals, DIN rail mount. Suitable for overload and short-circuit protection in control circuits and equipment
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3-pole supplementary protector with D-curve trip characteristic, rated 40 A. AC voltage rating 400 V, DC voltage rating 72 V, maximum interrupting rating 10 kA at 400 V AC. Screw clamp terminals, DIN rail mount. Suitable for overload and short-circuit protection in control circuits and equipment
SIEMENS IEC Supplementary Protector: 13 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY43138)
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