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Siemens Supplementary Protector: 4 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: 4 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp

The SIEMENS IEC Supplementary Protector (SKU 30XU60) is a 4 A, A-Curve, 1-pole UL1077 DIN rail-mount supplementary protector from the 5SY4 series. It features a screw clamp terminal connection and is rated for 10kA…

SKU 3G-OTH-21411

Brand
Siemens
Item
Supplementary Protector: 4 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
5SY41045
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 IEC Supplementary Protector (SKU 30XU60) is a 4 A, A-Curve, 1-pole UL1077 DIN rail-mount supplementary protector from the 5SY4 series. 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 5SY41045 supplementary protector used for?

The SIEMENS 5SY41045 is a 4 A, A-curve supplementary protector designed to protect downstream equipment against overloads and short circuits in industrial control panels, HVAC systems, and lighting circuits. It mounts on a DIN rail and is suitable for both AC (230/400V) and DC (72V) applications.

What are the specifications of the SIEMENS 5SY41045?

The SIEMENS 5SY41045 is a 1-pole supplementary protector rated 4 A with an A-curve trip characteristic. It has a max AIR rating of 10kA at 230/400V AC and a DC voltage rating of 72V DC. Terminal connection is screw clamp, and it is UL1077 listed for DIN rail mounting.

Where to buy the SIEMENS 5SY41045 worldwide?

You can source the SIEMENS 5SY41045 (SKU 30XU60) 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 on this A-curve supplementary protector.

How to install the SIEMENS 5SY41045 supplementary protector?

Install the SIEMENS 5SY41045 by snapping it onto a standard 35 mm DIN rail. Ensure the circuit is de-energized. Connect wires using the screw clamp terminals per the torque rating on the device label. Follow local electrical codes and the manufacturer's instructions for proper overcurrent protection.

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: 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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