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Siemens Supplementary Protector: 20 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp - D-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SiemensD-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors

Siemens Supplementary Protector: 20 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp

The SIEMENS IEC Supplementary Protector (SKU 30XU38) is a D-curve, 1-pole UL1077 DIN rail-mount supplementary protector rated at 20 A. It features a maximum AIR rating of 10kA at 230/400V AC, an AC voltage rating of…

SKU 3G-OTH-20130

Brand
Siemens
Item
Supplementary Protector: 20 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp
Category
D-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors
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Technical Specifications

Siemens
Manufacturer Part Number
5SY41208
Series
5SY4
Type
10kA at 230/400V AC, Screw Clamp, 5SY4, D
DC
72V
Curve Type
D
Max. AIR Rating
10kA at 230/400V AC
AC Voltage Rating
230/400V AC
DC Voltage Rating
72V DC
Terminal Connection
Screw Clamp
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS IEC Supplementary Protector (SKU 30XU38) is a D-curve, 1-pole UL1077 DIN rail-mount supplementary protector rated at 20 A. It features a maximum AIR rating of 10kA at 230/400V AC, an AC voltage rating of 230/400V AC, and a DC voltage rating of 72V DC. The unit uses screw clamp terminals and is part of the 5SY4 series (MPN 5SY41208).

Frequently Asked Questions

What is the SIEMENS 5SY4 supplementary protector used for?

The SIEMENS 5SY4 supplementary protector is used to protect industrial control circuits, lighting, and small motor loads from overcurrent and short circuits. Its D-curve provides high inrush immunity, making it suitable for applications with inductive loads such as contactors and solenoids. It mounts on a DIN rail and is UL1077 listed.

What are the specifications of the SIEMENS 5SY41208?

The SIEMENS 5SY41208 is a 20 A, 1-pole supplementary protector with a D-curve. It has a maximum AIR rating of 10kA at 230/400V AC, an AC voltage rating of 230/400V AC, and a DC voltage rating of 72V DC. It uses screw clamp terminals and is part of the 5SY4 series.

Where to buy the SIEMENS 5SY41208 worldwide?

You can source the SIEMENS 5SY41208 worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We supply genuine Siemens components for industrial applications.

How to select the correct SIEMENS supplementary protector for a DC circuit?

To select the correct SIEMENS supplementary protector for a DC circuit, verify the system voltage does not exceed the device's DC voltage rating of 72V DC. Ensure the current rating matches your load (e.g., 20 A for the 5SY41208). The D-curve is ideal for high inrush loads. 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, 1-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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SIEMENS IEC Supplementary Protector: 13 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, D (MPN 5SY41138). Key specifications — Brand: SIEMENS; Terminal Connection: Screw Clamp; DC Voltage Rating: 72V DC; Max. AIR Rating: 10kA at 230/400V AC; Series: 5SY4; AC Voltage Rating: 230/400V AC; Curve Type: D.
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SIEMENS IEC Supplementary Protector: 13 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, D (MPN 5SY41138). Key specifications — Brand: SIEMENS; Terminal Connection: Screw Clamp; DC Voltage Rating: 72V DC; Max. AIR Rating: 10kA at 230/400V AC; Series: 5SY4; AC Voltage Rating: 230/400V AC; Curve Type: D.
SIEMENS IEC Supplementary Protector: 1.6 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, D (MPN 5SY41158). Key specifications — Brand: SIEMENS; Terminal Connection: Screw Clamp; DC Voltage Rating: 72V DC; Max. AIR Rating: 10kA at 230/400V AC; Series: 5SY4; AC Voltage Rating: 230/400V AC; Curve Type: D.
Siemens
SIEMENS IEC Supplementary Protector: 1.6 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, D (MPN 5SY41158). Key specifications — Brand: SIEMENS; Terminal Connection: Screw Clamp; DC Voltage Rating: 72V DC; Max. AIR Rating: 10kA at 230/400V AC; Series: 5SY4; AC Voltage Rating: 230/400V AC; Curve Type: D.
SIEMENS IEC Supplementary Protector: 4 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, D (MPN 5SY41048). Key specifications — Brand: SIEMENS; Terminal Connection: Screw Clamp; DC Voltage Rating: 72V DC; Max. AIR Rating: 10kA at 230/400V AC; Series: 5SY4; AC Voltage Rating: 230/400V AC; Curve Type: D.
Siemens
SIEMENS IEC Supplementary Protector: 4 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, D (MPN 5SY41048). Key specifications — Brand: SIEMENS; Terminal Connection: Screw Clamp; DC Voltage Rating: 72V DC; Max. AIR Rating: 10kA at 230/400V AC; Series: 5SY4; AC Voltage Rating: 230/400V AC; Curve Type: D.