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Siemens Supplementary Protector: 40 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: 40 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp

The SIEMENS 5SY4 series IEC Supplementary Protector (SKU 30XU58) is a 40 A, D-curve, 1-pole UL1077 DIN rail-mount supplementary protector. It features a screw clamp terminal connection and is rated for 10kA at…

SKU 3G-OTH-20186

Brand
Siemens
Item
Supplementary Protector: 40 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
5SY41408
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 5SY4 series IEC Supplementary Protector (SKU 30XU58) is a 40 A, D-curve, 1-pole UL1077 DIN rail-mount supplementary protector. It features a screw clamp terminal connection and is rated for 10kA at 230/400V AC and 72V DC.

Frequently Asked Questions

What is the SIEMENS 5SY41408 supplementary protector used for?

The SIEMENS 5SY41408 is a 40 A, D-curve, 1-pole supplementary protector designed to protect branch circuits and equipment from overcurrents and short circuits. It is commonly used in industrial control panels, HVAC systems, and machinery where UL1077 listing is required. Its D-curve characteristic suits high-inrush loads like motors and transformers.

What are the specifications of the SIEMENS 5SY41408?

The SIEMENS 5SY41408 is a 40 A, D-curve, 1-pole supplementary protector with a screw clamp terminal connection. It is rated for 10kA at 230/400V AC and 72V DC. The device is part of the 5SY4 series and mounts on a DIN rail. It carries a UL1077 listing and is suitable for industrial applications.

Where to buy the SIEMENS 5SY41408 worldwide?

You can source the SIEMENS 5SY41408 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. 3G Electric supplies genuine Siemens components for industrial applications.

How to install the SIEMENS 5SY41408 supplementary protector?

Install the SIEMENS 5SY41408 by snapping it onto a standard DIN rail. Ensure the circuit is de-energized before wiring. Connect the line and load conductors to the screw clamp terminals, tightening to the manufacturer's recommended torque. Verify the D-curve matches the inrush characteristics of your load. Follow local electrical codes.

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: 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.
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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.
SIEMENS IEC Supplementary Protector: 3 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, D (MPN 5SY41038). 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: 3 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, D (MPN 5SY41038). 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.