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Siemens Supplementary Protector: 25 A Amps, 5kA at 400V AC, Screw Clamp, 5SY6, 400V AC - C-Curve, 2-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SiemensC-Curve, 2-Pole UL1077 DIN Rail-Mount Supplementary Protectors

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

The SIEMENS IEC Supplementary Protector is a C-Curve, 2-Pole UL1077 DIN Rail-Mount Supplementary Protector rated at 25 A Amps. It features a Max. AIR Rating of 5kA at 400V AC and an AC Voltage Rating of 400V AC, with…

SKU 3G-OTH-20915

Brand
Siemens
Item
Supplementary Protector: 25 A Amps, 5kA at 400V AC, Screw Clamp, 5SY6, 400V AC
Category
C-Curve, 2-Pole UL1077 DIN Rail-Mount Supplementary Protectors
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Technical Specifications

Siemens
Manufacturer Part Number
5SY62257
Series
5SY6
Type
5kA at 400V AC, Screw Clamp, 5SY6, C
AC
400V
Curve Type
C
Max. AIR Rating
5kA at 400V AC
AC Voltage Rating
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 IEC Supplementary Protector is a C-Curve, 2-Pole UL1077 DIN Rail-Mount Supplementary Protector rated at 25 A Amps. It features a Max. AIR Rating of 5kA at 400V AC and an AC Voltage Rating of 400V AC, with a Screw Clamp terminal connection. This unit is part of the 5SY6 series (MPN 5SY62257) and is not rated for DC voltage.

Frequently Asked Questions

What is the SIEMENS 5SY62257 IEC Supplementary Protector used for?

The SIEMENS 5SY62257 is a C-Curve, 2-Pole UL1077 DIN Rail-Mount Supplementary Protector rated at 25 A Amps. It protects industrial control circuits and equipment from overcurrents and short circuits in 400V AC systems, commonly used in panel building and machinery.

What are the specifications of the SIEMENS 5SY62257 Supplementary Protector?

The SIEMENS 5SY62257 is rated 25 A Amps, 400V AC, with a Max. AIR Rating of 5kA at 400V AC. It features a C-Curve trip characteristic, Screw Clamp terminal connection, and is part of the 5SY6 series. It is not rated for DC voltage.

Where to buy the SIEMENS 5SY62257 Supplementary Protector worldwide?

3G Electric supplies the SIEMENS 5SY62257 Supplementary Protector 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 5SY6 series unit.

How to select the correct SIEMENS supplementary protector for a 400V AC circuit?

Select a supplementary protector like the SIEMENS 5SY62257 by matching the voltage rating (400V AC), current rating (25 A Amps), and curve type (C for moderate inrush). Ensure the Max. AIR Rating (5kA at 400V AC) exceeds the available fault current. Use Screw Clamp terminals for secure wiring.

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, 2-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: 6 A Amps, 5kA at 400V AC, Screw Clamp, 5SY6, 400V AC, C (MPN 5SY62067). Key specifications — Terminal Connection: Screw Clamp; AC Voltage Rating: 400V AC; Curve Type: C; DC Voltage Rating: Not Rated; Max. AIR Rating: 5kA at 400V AC; Series: 5SY6; Brand: SIEMENS.
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SIEMENS IEC Supplementary Protector: 1.6 A Amps, 5kA at 400V AC, Screw Clamp, 5SY6, 400V AC, C (MPN 5SY62157). Key specifications — Terminal Connection: Screw Clamp; AC Voltage Rating: 400V AC; Curve Type: C; DC Voltage Rating: Not Rated; Max. AIR Rating: 5kA at 400V AC; Series: 5SY6; Brand: SIEMENS.
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SIEMENS IEC Supplementary Protector: 13 A Amps, 5kA at 400V AC, Screw Clamp, 5SY6, 400V AC, C (MPN 5SY62137). Key specifications — Terminal Connection: Screw Clamp; AC Voltage Rating: 400V AC; Curve Type: C; DC Voltage Rating: Not Rated; Max. AIR Rating: 5kA at 400V AC; Series: 5SY6; Brand: SIEMENS.
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SIEMENS IEC Supplementary Protector: 40 A Amps, 5kA at 400V AC, Screw Clamp, 5SY6, 400V AC, C (MPN 5SY62407). Key specifications — Terminal Connection: Screw Clamp; AC Voltage Rating: 400V AC; Curve Type: C; DC Voltage Rating: Not Rated; Max. AIR Rating: 5kA at 400V AC; Series: 5SY6; Brand: SIEMENS.
Siemens
SIEMENS IEC Supplementary Protector: 40 A Amps, 5kA at 400V AC, Screw Clamp, 5SY6, 400V AC, C (MPN 5SY62407). Key specifications — Terminal Connection: Screw Clamp; AC Voltage Rating: 400V AC; Curve Type: C; DC Voltage Rating: Not Rated; Max. AIR Rating: 5kA at 400V AC; Series: 5SY6; Brand: SIEMENS.
SIEMENS IEC Supplementary Protector: 20 A Amps, 5kA at 400V AC, Screw Clamp, 5SY6, 400V AC, C (MPN 5SY62207). Key specifications — Terminal Connection: Screw Clamp; AC Voltage Rating: 400V AC; Curve Type: C; DC Voltage Rating: Not Rated; Max. AIR Rating: 5kA at 400V AC; Series: 5SY6; Brand: SIEMENS.
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SIEMENS IEC Supplementary Protector: 0.3 A Amps, 5kA at 400V AC, Screw Clamp, 5SY6, 400V AC, C (MPN 5SY62147). Key specifications — Terminal Connection: Screw Clamp; AC Voltage Rating: 400V AC; Curve Type: C; DC Voltage Rating: Not Rated; Max. AIR Rating: 5kA at 400V AC; Series: 5SY6; Brand: SIEMENS.
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SIEMENS IEC Supplementary Protector: 0.3 A Amps, 5kA at 400V AC, Screw Clamp, 5SY6, 400V AC, C (MPN 5SY62147). Key specifications — Terminal Connection: Screw Clamp; AC Voltage Rating: 400V AC; Curve Type: C; DC Voltage Rating: Not Rated; Max. AIR Rating: 5kA at 400V AC; Series: 5SY6; Brand: SIEMENS.
SIEMENS IEC Supplementary Protector: 16 A Amps, 5kA at 400V AC, Screw Clamp, 5SY6, 400V AC, C (MPN 5SY62167). Key specifications — Terminal Connection: Screw Clamp; AC Voltage Rating: 400V AC; Curve Type: C; DC Voltage Rating: Not Rated; Max. AIR Rating: 5kA at 400V AC; Series: 5SY6; Brand: SIEMENS.
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SIEMENS IEC Supplementary Protector: 16 A Amps, 5kA at 400V AC, Screw Clamp, 5SY6, 400V AC, C (MPN 5SY62167). Key specifications — Terminal Connection: Screw Clamp; AC Voltage Rating: 400V AC; Curve Type: C; DC Voltage Rating: Not Rated; Max. AIR Rating: 5kA at 400V AC; Series: 5SY6; Brand: SIEMENS.
SIEMENS IEC Supplementary Protector: 4 A Amps, 5kA at 400V AC, Screw Clamp, 5SY6, 400V AC, C (MPN 5SY62047). Key specifications — Terminal Connection: Screw Clamp; AC Voltage Rating: 400V AC; Curve Type: C; DC Voltage Rating: Not Rated; Max. AIR Rating: 5kA at 400V AC; Series: 5SY6; Brand: SIEMENS.
Siemens
SIEMENS IEC Supplementary Protector: 4 A Amps, 5kA at 400V AC, Screw Clamp, 5SY6, 400V AC, C (MPN 5SY62047). Key specifications — Terminal Connection: Screw Clamp; AC Voltage Rating: 400V AC; Curve Type: C; DC Voltage Rating: Not Rated; Max. AIR Rating: 5kA at 400V AC; Series: 5SY6; Brand: SIEMENS.