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

Siemens Supplementary Protector: 1 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp

The SIEMENS 5SY4 series IEC Supplementary Protector is a 1-pole, A-curve, DIN rail-mount device rated at 1 A. It carries a maximum AIR rating of 10kA at 230/400V AC, with AC voltage rating of 230/400V AC and DC…

SKU 3G-OTH-21373

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

Siemens
Manufacturer Part Number
5SY41015
Series
5SY4
Type
10kA at 230/400V AC, Screw Clamp, 5SY4, A
DC
72V
Curve Type
A
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 1-pole, A-curve, DIN rail-mount device rated at 1 A. It carries a maximum AIR rating of 10kA at 230/400V AC, with AC voltage rating of 230/400V AC and DC voltage rating of 72V DC. The unit features screw clamp terminals and is UL1077 listed.

Frequently Asked Questions

What is the SIEMENS 5SY41015 supplementary protector used for?

The SIEMENS 5SY41015 is a 1-pole, A-curve supplementary protector rated at 1 A. It protects downstream equipment against overloads and short circuits in industrial control panels, HVAC systems, and automation circuits. Its UL1077 listing suits branch-circuit protection in 230/400V AC or 72V DC applications.

What are the specifications of the SIEMENS 5SY4 1 A supplementary protector?

The SIEMENS 5SY4 series supplementary protector is rated at 1 A with a max AIR of 10kA at 230/400V AC. It has an AC voltage rating of 230/400V AC and a DC voltage rating of 72V DC. The device uses screw clamp terminals, is DIN rail-mountable, and features an A curve type.

Where to buy the SIEMENS 5SY41015 supplementary protector worldwide?

3G Electric supplies the SIEMENS 5SY41015 supplementary protector worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time; we source and deliver this UL1077-listed, 1 A, A-curve device to any country.

How to install the SIEMENS 5SY4 supplementary protector on a DIN rail?

To install the SIEMENS 5SY4, snap the device onto a standard 35 mm DIN rail until it locks. Connect line and load wires to the screw clamp terminals, tightening to the torque specified on the label. Ensure the circuit is de-energized before installation. Follow local electrical codes and the manufacturer's instructions for proper mounting.

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 a-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: 63 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41635). 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: A.
SIEMENS IEC Supplementary Protector: 32 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41325). 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: A.
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SIEMENS IEC Supplementary Protector: 32 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41325). 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: A.
SIEMENS IEC Supplementary Protector: 8 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41085). 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: A.
Siemens
SIEMENS IEC Supplementary Protector: 8 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp, 5SY4, A (MPN 5SY41085). 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: A.