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Siemens Supplementary Protector: 40 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp - A-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SiemensA-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 30XU55) is a 40 A, A-curve, 1-pole UL1077 DIN rail-mount device. It is rated for 10kA at 230/400V AC and 72V DC, with screw-clamp terminals. This supplementary…

SKU 3G-OTH-21444

Brand
Siemens
Item
Supplementary Protector: 40 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp
Category
A-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors
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Technical Specifications

Siemens
Manufacturer Part Number
5SY41405
Series
5SY4
Type
10kA at 230/400V AC, Screw Clamp, 5SY4, A
DC
72V
Curve Type
A
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 30XU55) is a 40 A, A-curve, 1-pole UL1077 DIN rail-mount device. It is rated for 10kA at 230/400V AC and 72V DC, with screw-clamp terminals. This supplementary protector provides overcurrent protection for industrial equipment.

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 5SY4 supplementary protector used for?

The Siemens 5SY4 supplementary protector provides overcurrent protection for industrial equipment. It is a 1-pole, A-curve device rated 40 A, 10kA at 230/400V AC, and 72V DC, with screw-clamp terminals. It mounts on DIN rails and complies with UL1077 for use in control panels and machinery.

What are the specifications of the Siemens 5SY41405?

The Siemens 5SY41405 (SKU 30XU55) is a 40 A, A-curve, 1-pole supplementary protector. It has a max AIR rating of 10kA at 230/400V AC, a DC voltage rating of 72V DC, and screw-clamp terminals. It is part of the 5SY4 series and mounts on DIN rails.

Where to buy Siemens 5SY4 supplementary protectors worldwide?

You can source the Siemens 5SY4 supplementary protector from 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 Siemens 5SY41405 model.

How to install a Siemens 5SY4 supplementary protector?

To install the Siemens 5SY4 supplementary protector, snap it onto a DIN rail and connect wires using the screw-clamp terminals. Ensure the circuit is de-energized. Follow standard industrial practices for overcurrent protection devices. For specific guidance, refer to Siemens installation instructions.

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 a-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: 63 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41635). 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: A.
SIEMENS IEC Supplementary Protector: 32 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41325). 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: A.
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SIEMENS IEC Supplementary Protector: 32 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41325). 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: A.
SIEMENS IEC Supplementary Protector: 8 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41085). 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: A.
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SIEMENS IEC Supplementary Protector: 8 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41085). 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: A.