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Siemens Supplementary Protector: 0.5 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: 0.5 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp

The SIEMENS IEC Supplementary Protector (SKU 30XT87, MPN 5SY43058) is a 0.5 A, D-Curve, 3-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series. It is rated for 400V AC and 72V DC, with a maximum…

SKU 3G-OTH-20813

Brand
Siemens
Item
Supplementary Protector: 0.5 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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Technical Specifications

Siemens
Manufacturer Part Number
5SY43058
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
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS IEC Supplementary Protector (SKU 30XT87, MPN 5SY43058) is a 0.5 A, D-Curve, 3-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series. It is rated for 400V AC and 72V DC, with a maximum AIR rating of 10kA at 400V AC, and features screw clamp terminals.

Frequently Asked Questions

What is the SIEMENS 5SY43058 supplementary protector used for?

The SIEMENS 5SY43058 is a D-Curve, 3-pole supplementary protector designed to protect branch circuits and equipment against overloads and short circuits in industrial control panels, HVAC systems, and automation applications. It mounts on a DIN rail and is suitable for both AC and DC circuits up to 400V AC and 72V DC.

What are the specifications of the SIEMENS 5SY43058?

The SIEMENS 5SY43058 is a 0.5 A, D-Curve, 3-pole supplementary protector from the 5SY4 series. It has an AC voltage rating of 400V AC, a DC voltage rating of 72V DC, and a maximum AIR rating of 10kA at 400V AC. Terminal connection is screw clamp, and it is UL1077 listed for DIN rail mounting.

Where to buy the SIEMENS 5SY43058 worldwide?

3G Electric supplies the SIEMENS 5SY43058 supplementary protector worldwide. As a global industrial equipment distributor established in 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this Siemens 5SY4 series protector to any country.

How to install the SIEMENS 5SY43058 supplementary protector?

Install the SIEMENS 5SY43058 by snapping it onto a 35 mm DIN rail. Ensure the circuit is de-energized. Connect wires to the screw clamp terminals per the torque specifications in the datasheet. For D-Curve protection, verify the inrush current of the load does not exceed the curve's magnetic trip threshold. Always 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, 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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