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Siemens Supplementary Protector: 0.5 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp - C-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SiemensC-Curve, 4-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 30XV86, MPN 5SY44057) is a C-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protector from the 5SY4 series, rated at 0.5 A Amps. It features a maximum AIR rating of…

SKU 3G-OTH-20558

Brand
Siemens
Item
Supplementary Protector: 0.5 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp
Category
C-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors
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Technical Specifications

Siemens
Manufacturer Part Number
5SY44057
Series
5SY4
Type
10kA at 400V AC, Screw Clamp, C
AC
400V
DC
72V
Max. AIR Rating
10kA at 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 30XV86, MPN 5SY44057) is a C-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protector from the 5SY4 series, rated at 0.5 A Amps. It features a maximum AIR rating of 10kA at 400V AC, a DC voltage rating of 72V DC, and screw clamp terminal connections.

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 5SY44057 supplementary protector used for?

The SIEMENS 5SY44057 is a C-curve, 4-pole supplementary protector rated 0.5 A. It protects branch circuits and sensitive equipment against overloads and short circuits in industrial control panels, HVAC systems, and machinery, with a 72V DC rating and 10kA interrupting capacity at 400V AC.

What are the specifications of the SIEMENS 5SY44057?

The SIEMENS 5SY44057 is a 5SY4 series supplementary protector with 0.5 A current rating, C-curve trip characteristic, 4 poles, 72V DC voltage rating, 10kA max AIR at 400V AC, and screw clamp terminals. It is UL1077 listed for DIN rail mounting.

Where to buy the SIEMENS 5SY44057 worldwide?

3G Electric supplies the SIEMENS 5SY44057 supplementary protector to customers worldwide. As a global industrial sourcing partner, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this 0.5 A, 4-pole protector.

How to install the SIEMENS 5SY44057 on a DIN rail?

To install the SIEMENS 5SY44057, snap it onto a standard 35 mm DIN rail. Ensure the rail is clean and the protector is oriented correctly. Use a screwdriver to tighten the screw clamp terminals to the recommended torque for your wire gauge. Always de-energize the circuit before installation.

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 c-curve, 4-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 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, C, 400V AC (MPN 5SY44017). Key specifications — Series: 5SY4; DC Voltage Rating: 72V DC; Max. AIR Rating: 10kA at 400V AC; Terminal Connection: Screw Clamp; Brand: SIEMENS.
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SIEMENS IEC Supplementary Protector: 13 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, C, 400V AC (MPN 5SY44137). Key specifications — Series: 5SY4; DC Voltage Rating: 72V DC; Max. AIR Rating: 10kA at 400V AC; Terminal Connection: Screw Clamp; Brand: SIEMENS.
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