Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
Siemens Supplementary Protector: 20 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp - C-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SiemensC-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors

Siemens Supplementary Protector: 20 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp

The Siemens 5SY4 series IEC Supplementary Protector (SKU 30XU37) is a C-curve, 1-pole UL1077 DIN rail-mount supplementary protector rated at 20 A. It features a maximum AIR rating of 10kA at 230/400V AC, an AC…

SKU 3G-OTH-19817

Brand
Siemens
Item
Supplementary Protector: 20 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp
Category
C-Curve, 1-Pole UL1077 DIN Rail-Mount Supplementary Protectors
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

Siemens
Manufacturer Part Number
5SY41207
Series
5SY4
Type
10kA at 230/400V AC, Screw Clamp, 5SY4, C
DC
72V
Curve Type
C
Max. AIR Rating
10kA at 230/400V AC
AC Voltage Rating
230/400V AC
DC Voltage Rating
72V DC
Terminal Connection
Screw Clamp
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The Siemens 5SY4 series IEC Supplementary Protector (SKU 30XU37) is a C-curve, 1-pole UL1077 DIN rail-mount supplementary protector rated at 20 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, with screw clamp terminals.

Frequently Asked Questions

What is the Siemens 5SY41207 supplementary protector used for?

The Siemens 5SY41207 is a C-curve, 1-pole supplementary protector rated at 20 A. It protects branch circuits and equipment against overloads and short circuits in industrial control panels, HVAC systems, and machinery. It is UL1077 listed for use on DIN rails in AC or DC applications up to 72V DC.

What are the specifications of the Siemens 5SY41207?

The Siemens 5SY41207 is a 20 A, 1-pole supplementary protector with a C-curve. It has an AC voltage rating of 230/400V AC, a DC voltage rating of 72V DC, and a maximum AIR rating of 10kA at 230/400V AC. It uses screw clamp terminals and is part of the 5SY4 series.

Where to buy the Siemens 5SY41207 worldwide?

3G Electric supplies the Siemens 5SY41207 worldwide. As a global industrial equipment distributor established in 1990, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time; we source and deliver this Siemens supplementary protector to any country.

How to install the Siemens 5SY41207 supplementary protector?

Install the Siemens 5SY41207 by snapping it onto a standard DIN rail. Ensure the circuit is de-energized. Connect wires to the screw clamp terminals per the torque specifications in the datasheet. For DC applications, observe polarity if required. Always follow local electrical codes and Siemens installation guidelines.

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, 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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
SIEMENS IEC Supplementary Protector: 2 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41027). 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: C.
Siemens
SIEMENS IEC Supplementary Protector: 2 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41027). 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: C.
SIEMENS IEC Supplementary Protector: 50 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41507). 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: C.
Siemens
SIEMENS IEC Supplementary Protector: 50 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41507). 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: C.
SIEMENS IEC Supplementary Protector: 4 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41047). 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: C.
Siemens
SIEMENS IEC Supplementary Protector: 4 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41047). 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: C.
SIEMENS IEC Supplementary Protector: 63 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41637). 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: C.
Siemens
SIEMENS IEC Supplementary Protector: 63 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41637). 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: C.
SIEMENS IEC Supplementary Protector: 32 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41327). 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: C.
Siemens
SIEMENS IEC Supplementary Protector: 32 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41327). 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: C.
SIEMENS IEC Supplementary Protector: 3 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41037). 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: C.
Siemens
SIEMENS IEC Supplementary Protector: 3 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41037). 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: C.

More from Siemens

View all Siemens parts →
SIEMENS IEC Supplementary Protector: 30 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41307). 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: C.
Siemens
SIEMENS IEC Supplementary Protector: 30 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41307). 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: C.
SIEMENS IEC Supplementary Protector: 10 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41107). 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: C.
Siemens
SIEMENS IEC Supplementary Protector: 10 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41107). 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: C.
SIEMENS IEC Supplementary Protector: 40 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41407). 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: C.
Siemens
SIEMENS IEC Supplementary Protector: 40 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41407). 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: C.
SIEMENS IEC Supplementary Protector: 40 A Amps, 5kA at 230/400V AC, Screw Clamp, 5SY6, 230/400V AC (MPN 5SY61407). Key specifications — Brand: SIEMENS; Terminal Connection: Screw Clamp; DC Voltage Rating: Not Rated; Max. AIR Rating: 5kA at 230/400V AC; Series: 5SY6; AC Voltage Rating: 230/400V AC; Curve Type: C.
Siemens
SIEMENS IEC Supplementary Protector: 40 A Amps, 5kA at 230/400V AC, Screw Clamp, 5SY6, 230/400V AC (MPN 5SY61407). Key specifications — Brand: SIEMENS; Terminal Connection: Screw Clamp; DC Voltage Rating: Not Rated; Max. AIR Rating: 5kA at 230/400V AC; Series: 5SY6; AC Voltage Rating: 230/400V AC; Curve Type: C.
SIEMENS IEC Supplementary Protector: 4 A Amps, 5kA at 230/400V AC, Screw Clamp, 5SY6, 230/400V AC, C (MPN 5SY61047). Key specifications — Brand: SIEMENS; Terminal Connection: Screw Clamp; DC Voltage Rating: Not Rated; Max. AIR Rating: 5kA at 230/400V AC; Series: 5SY6; AC Voltage Rating: 230/400V AC; Curve Type: C.
Siemens
SIEMENS IEC Supplementary Protector: 4 A Amps, 5kA at 230/400V AC, Screw Clamp, 5SY6, 230/400V AC, C (MPN 5SY61047). Key specifications — Brand: SIEMENS; Terminal Connection: Screw Clamp; DC Voltage Rating: Not Rated; Max. AIR Rating: 5kA at 230/400V AC; Series: 5SY6; AC Voltage Rating: 230/400V AC; Curve Type: C.
SIEMENS IEC Supplementary Protector: 3 A Amps, 5kA at 230/400V AC, Screw Clamp, 5SY6, 230/400V AC, C (MPN 5SY61037). Key specifications — Brand: SIEMENS; Terminal Connection: Screw Clamp; DC Voltage Rating: Not Rated; Max. AIR Rating: 5kA at 230/400V AC; Series: 5SY6; AC Voltage Rating: 230/400V AC; Curve Type: C.
Siemens
SIEMENS IEC Supplementary Protector: 3 A Amps, 5kA at 230/400V AC, Screw Clamp, 5SY6, 230/400V AC, C (MPN 5SY61037). Key specifications — Brand: SIEMENS; Terminal Connection: Screw Clamp; DC Voltage Rating: Not Rated; Max. AIR Rating: 5kA at 230/400V AC; Series: 5SY6; AC Voltage Rating: 230/400V AC; Curve Type: C.
SIEMENS IEC Supplementary Protector: 25 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41257). 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: C.
Siemens
SIEMENS IEC Supplementary Protector: 25 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41257). 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: C.
SIEMENS IEC Supplementary Protector: 16 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41167). 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: C.
Siemens
SIEMENS IEC Supplementary Protector: 16 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, C (MPN 5SY41167). 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: C.