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SIEMENS IEC Supplementary Protector: 16 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp - A-Curve, 2-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SIEMENS IECA-Curve, 2-Pole UL1077 DIN Rail-Mount Supplementary Protectors

SIEMENS IEC Supplementary Protector: 16 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp

The SIEMENS IEC Supplementary Protector (SKU 3G-OTH-127998) is a 16 A, A-Curve, 2-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series. It is rated for 400V AC with a breaking capacity of 10kA at…

SKU 3G-OTH-127998

Brand
SIEMENS IEC
Item
Supplementary Protector: 16 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp
Category
A-Curve, 2-Pole UL1077 DIN Rail-Mount Supplementary Protectors
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Technical Specifications

SIEMENS IEC
Manufacturer Part Number
5SY42165
Type
10kA at 400V AC, Screw Clamp, 5SY4
AC
400V
DC
72V

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

Product Description

The SIEMENS IEC Supplementary Protector (SKU 3G-OTH-127998) is a 16 A, A-Curve, 2-Pole UL1077 DIN Rail-Mount supplementary protector from the 5SY4 series. It is rated for 400V AC with a breaking capacity of 10kA at 400V AC and 72V DC, and features screw clamp terminals.

Frequently Asked Questions

What is the SIEMENS IEC Supplementary Protector 5SY42165 used for?

The SIEMENS IEC Supplementary Protector 5SY42165 is a 16 A, A-Curve, 2-pole UL1077 device used to protect branch circuits and equipment from overcurrent and short circuits in industrial control panels, HVAC systems, and automation applications. It mounts on a standard DIN rail and is suitable for 400V AC systems.

What are the specifications of the SIEMENS 5SY42165 supplementary protector?

The SIEMENS 5SY42165 is a 16 A, A-Curve, 2-pole supplementary protector rated for 400V AC with a breaking capacity of 10kA at 400V AC and 72V DC. It features screw clamp terminals and is part of the 5SY4 series. It is UL1077 listed and mounts on a DIN rail.

Where to buy the SIEMENS 5SY42165 supplementary protector worldwide?

You can source the SIEMENS 5SY42165 supplementary protector from 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 provide competitive pricing and reliable sourcing for this 5SY4 series device.

How to install the SIEMENS 5SY42165 supplementary protector?

To install the SIEMENS 5SY42165, snap it onto a standard 35 mm DIN rail. Ensure the circuit is de-energized. Connect wires to the screw clamp terminals, tightening to the manufacturer's recommended torque. Verify polarity for DC applications. Follow local electrical codes and the SIEMENS 5SY4 series installation manual for safe operation.

Used in

Common applications for SIEMENS IEC
Motor control centers — Siemens 5SY4 D-curve supplementary protectors (e.g., 5SY42108) for motor branch circuit protection
HVAC equipment — A-curve protectors (e.g., 5SY42255) for compressor and fan motor overcurrent protection
Industrial conveyor systems — 4-pole D-curve protectors (e.g., 5SY44168) for three-phase motor protection with neutral
Pump control panels — 2-pole supplementary protectors (e.g., 5SY42038) for single-phase pump motor protection
Machine tool control circuits — A-curve protectors (e.g., 5SY44155) for solenoid valve and relay protection
Power distribution sub-panels — 4-pole protectors (e.g., 5SY44155) for three-phase branch circuit protection in light industrial settings

SIEMENS IEC Products

3G Electric supplies SIEMENS IEC a-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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Compatible alternatives & equivalents

Cross-referenced by specification & description
SIEMENS IEC Supplementary Protector: 10 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42105)
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SIEMENS IEC Supplementary Protector: 10 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42105)
SIEMENS IEC Supplementary Protector: 2 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42025)
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SIEMENS IEC Supplementary Protector: 2 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42025)
SIEMENS IEC Supplementary Protector: 1 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42015)
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SIEMENS IEC Supplementary Protector: 1 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42015)
SIEMENS IEC Supplementary Protector: 8 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42085)
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SIEMENS IEC Supplementary Protector: 8 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42085)
SIEMENS IEC Supplementary Protector: 63 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42635)
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SIEMENS IEC Supplementary Protector: 63 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42635)

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