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Siemens Supplementary Protector: 25 A Amps, 5kA at 230/400V AC, Screw Clamp, 5SY6 - B-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SiemensB-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors

Siemens Supplementary Protector: 25 A Amps, 5kA at 230/400V AC, Screw Clamp, 5SY6

The Siemens 5SY6 series IEC Supplementary Protector (SKU 30XZ15) is a B-curve, 1-pole UL1077 DIN rail-mount supplementary protector rated at 25 A amps. It has a maximum AIR rating of 5kA at 230/400V AC, an AC voltage…

SKU 3G-OTH-20546

Brand
Siemens
Item
Supplementary Protector: 25 A Amps, 5kA at 230/400V AC, Screw Clamp, 5SY6
Category
B-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors
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Technical Specifications

Siemens
Manufacturer Part Number
5SY61256
Series
5SY6
Type
5kA at 230/400V AC, Screw Clamp, 5SY6
AC
230/400V
Curve Type
B
Max. AIR Rating
5kA at 230/400V AC
AC Voltage Rating
230/400V AC
DC Voltage Rating
Not Rated
Terminal Connection
Screw Clamp
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Siemens 5SY6 series IEC Supplementary Protector (SKU 30XZ15) is a B-curve, 1-pole UL1077 DIN rail-mount supplementary protector rated at 25 A amps. It has a maximum AIR rating of 5kA at 230/400V AC, an AC voltage rating of 230/400V AC, and is not rated for DC voltage. The terminal connection is a screw clamp, and the manufacturer part number is 5SY61256.

Frequently Asked Questions

What is the Siemens 5SY61256 supplementary protector used for?

The Siemens 5SY61256 is a B-curve, 1-pole UL1077 supplementary protector rated at 25 A. It protects branch circuits and equipment against overloads and short circuits in industrial control panels, HVAC systems, and lighting applications where UL489 circuit breakers are not required.

What are the specifications of the Siemens 5SY61256?

The Siemens 5SY61256 is a 25 A, 1-pole supplementary protector with a B-curve trip characteristic. It has a maximum AIR rating of 5kA at 230/400V AC, AC voltage rating of 230/400V AC, and is not rated for DC voltage. Terminal connection is screw clamp, and it mounts on DIN rail.

Where to buy the Siemens 5SY61256 worldwide?

You can source the Siemens 5SY61256 (SKU 30XZ15) 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.

How to select the correct Siemens supplementary protector for my application?

Select based on system voltage (230/400V AC), current rating (25 A), and trip curve (B-curve for resistive or light inductive loads). Ensure the interrupting rating (5kA) exceeds available fault current. Use a UL1077 device like the Siemens 5SY6 series for supplementary protection in industrial panels.

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.
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.
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