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Siemens Supplementary Protector: 50 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: 50 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp

The SIEMENS IEC Supplementary Protector (SKU 30XW31, MPN 5SY44507) is a C-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector rated at 50 A Amps. It features a Max. AIR Rating of 10kA at 400V AC, a DC Voltage…

SKU 3G-OTH-20321

Brand
Siemens
Item
Supplementary Protector: 50 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
5SY44507
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
View Full Spec Sheet

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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS IEC Supplementary Protector (SKU 30XW31, MPN 5SY44507) is a C-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector rated at 50 A Amps. It features a Max. AIR Rating of 10kA at 400V AC, a DC Voltage Rating of 72V DC, and a Screw Clamp terminal connection. This device is part of the 5SY4 series and operates at 400V AC.

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 5SY44507 supplementary protector used for?

The SIEMENS 5SY44507 is a C-curve, 4-pole supplementary protector rated at 50 A Amps. It protects branch circuits and equipment against overloads and short circuits in industrial control panels, HVAC systems, and machinery. Its 72V DC rating suits DC control circuits, while the 400V AC rating handles AC power distribution.

What are the specifications of the SIEMENS 5SY44507?

The SIEMENS 5SY44507 is a 50 A Amps, C-curve, 4-pole supplementary protector with a Max. AIR Rating of 10kA at 400V AC and a DC Voltage Rating of 72V DC. It uses a Screw Clamp terminal connection, is part of the 5SY4 series, and complies with UL1077 for DIN rail mounting.

Where to buy the SIEMENS 5SY44507 in worldwide?

3G Electric supplies the SIEMENS 5SY44507 (SKU 30XW31) to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this C-curve supplementary protector.

How to install the SIEMENS 5SY44507 supplementary protector?

Install the SIEMENS 5SY44507 on a standard DIN rail. Ensure the circuit is de-energized, then snap the device onto the rail. Connect wires using the Screw Clamp terminals, tightening to the manufacturer's torque specification. Verify polarity for DC applications and test operation per local 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 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: 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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SIEMENS IEC Supplementary Protector: 3 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, C, 400V AC (MPN 5SY44037). 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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