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Siemens Supplementary Protector: 50 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp - B-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SiemensB-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors

Siemens Supplementary Protector: 50 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp

The Siemens 5SY4 series IEC supplementary protector is a B-curve, 1-pole UL1077 DIN rail-mount device rated at 50 A. It features a maximum AIR rating of 10kA at 230/400V AC, an AC voltage rating of 230/400V AC, and a…

SKU 3G-OTH-20953

Brand
Siemens
Item
Supplementary Protector: 50 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp
Category
B-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors
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Technical Specifications

Siemens
Manufacturer Part Number
5SY41506
Series
5SY4
Type
10kA at 230/400V AC, Screw Clamp, 5SY4, B
DC
72V
Curve Type
B
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 5SY4 series IEC supplementary protector is a B-curve, 1-pole UL1077 DIN rail-mount device rated at 50 A. It features a maximum AIR rating of 10kA at 230/400V AC, an AC voltage rating of 230/400V AC, and a DC voltage rating of 72V DC. The unit uses screw clamp terminals for connection.

Frequently Asked Questions

What is the Siemens 5SY41506 supplementary protector used for?

The Siemens 5SY41506 is a B-curve, 1-pole supplementary protector rated at 50 A. It protects downstream equipment against overloads and short circuits in industrial control panels, HVAC systems, and lighting circuits. It mounts on a DIN rail and is UL1077 listed for use in branch-circuit applications.

What are the specifications of the Siemens 5SY41506?

The Siemens 5SY41506 is a 50 A, B-curve, 1-pole supplementary protector with a max AIR rating of 10kA at 230/400V AC. It has an AC voltage rating of 230/400V AC and a DC voltage rating of 72V DC. Terminal connection is screw clamp. It is part of the Siemens 5SY4 series.

Where to buy the Siemens 5SY41506 worldwide?

You can source the Siemens 5SY41506 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. We supply genuine Siemens components to industrial buyers globally.

How to install the Siemens 5SY41506 supplementary protector?

Mount the Siemens 5SY41506 onto a standard DIN rail. Connect the line and load wires using the screw clamp terminals, tightening to the torque specified on the device label. Ensure the circuit is de-energized before installation. Follow Siemens' instructions for proper clearance and wire sizing.

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, 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: 25 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, B (MPN 5SY41256). 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: B.
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SIEMENS IEC Supplementary Protector: 25 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, B (MPN 5SY41256). 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: B.
SIEMENS IEC Supplementary Protector: 13 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, B (MPN 5SY41136). 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: B.
Siemens
SIEMENS IEC Supplementary Protector: 13 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, B (MPN 5SY41136). 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: B.