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Siemens Supplementary Protector: 50 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp - B-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SiemensB-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 30XW30, MPN 5SY44506) is a B-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector rated at 50 Amps. Part of the 5SY4 series, it features a Max. AIR Rating of 10kA…

SKU 3G-OTH-21713

Brand
Siemens
Item
Supplementary Protector: 50 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp
Category
B-Curve, 4-Pole UL1077 DIN Rail-Mount Supplementary Protectors
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Technical Specifications

Siemens
Manufacturer Part Number
5SY44506
Series
5SY4
Type
10kA at 400V AC, Screw Clamp, B
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 30XW30, MPN 5SY44506) is a B-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector rated at 50 Amps. Part of the 5SY4 series, it features a Max. AIR Rating of 10kA at 400V AC, a DC Voltage Rating of 72V DC, and a Screw Clamp terminal connection.

Frequently Asked Questions

What is the SIEMENS 5SY44506 supplementary protector used for?

The SIEMENS 5SY44506 is a B-Curve, 4-Pole UL1077 DIN Rail-Mount supplementary protector rated at 50 Amps. It protects industrial control circuits and equipment from overloads and short circuits in applications up to 400V AC or 72V DC, commonly used in panel building and machinery.

What are the specifications of the SIEMENS 5SY44506?

The SIEMENS 5SY44506 (MPN 5SY44506) is a 50 Amp, B-Curve, 4-Pole supplementary protector from the 5SY4 series. It has a Max. AIR Rating of 10kA at 400V AC, a DC Voltage Rating of 72V DC, and a Screw Clamp terminal connection. It is UL1077 listed for DIN rail mounting.

Where to buy the SIEMENS 5SY44506 worldwide?

3G Electric supplies the SIEMENS 5SY44506 supplementary protector 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 genuine Siemens component.

How to install the SIEMENS 5SY44506 supplementary protector?

Install the SIEMENS 5SY44506 by snapping it onto a standard 35mm DIN rail. Ensure the circuit is de-energized before connecting wires to the Screw Clamp terminals. Torque terminals to manufacturer specifications (typically 2-3 Nm). Verify polarity for DC applications up to 72V DC.

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 b-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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