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SIEMENS IEC Supplementary Protector: 50 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp - D-Curve, 2-Pole UL1077 DIN Rail-Mount Supplementary Protectors
SIEMENS IECD-Curve, 2-Pole UL1077 DIN Rail-Mount Supplementary Protectors

SIEMENS IEC Supplementary Protector: 50 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp

The SIEMENS IEC Supplementary Protector (SKU 30XV17, MPN 5SY42508) is a 50 A, D-curve, 2-pole UL1077 DIN rail-mount supplementary protector from the 5SY4 series. It is rated for 400V AC and 72V DC, with a breaking…

SKU 3G-OTH-127481

Brand
SIEMENS IEC
Item
Supplementary Protector: 50 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp
Category
D-Curve, 2-Pole UL1077 DIN Rail-Mount Supplementary Protectors
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Technical Specifications

SIEMENS IEC
Manufacturer Part Number
5SY42508
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 30XV17, MPN 5SY42508) is a 50 A, D-curve, 2-pole UL1077 DIN rail-mount supplementary protector from the 5SY4 series. It is rated for 400V AC and 72V DC, with a breaking capacity of 10kA at 400V AC, and features screw-clamp terminals.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the SIEMENS IEC Supplementary Protector 5SY42508 used for?

The SIEMENS IEC Supplementary Protector 5SY42508 is used to protect branch circuits and equipment from overcurrents and short circuits in industrial control panels, HVAC systems, and machinery. Its D-curve trip characteristic makes it suitable for loads with high inrush currents, such as motors and transformers.

What are the specifications of the SIEMENS 5SY42508 supplementary protector?

The SIEMENS 5SY42508 is a 50 A, D-curve, 2-pole supplementary protector rated for 400V AC and 72V DC. It has a breaking capacity of 10kA at 400V AC and uses screw-clamp terminals. It is part of the 5SY4 series and is UL1077 listed for DIN rail mounting.

Where to buy the SIEMENS 5SY42508 supplementary protector worldwide?

You can source the SIEMENS 5SY42508 supplementary protector worldwide through 3G Electric. As a global industrial equipment distributor, 3G Electric handles full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install the SIEMENS 5SY42508 supplementary protector?

To install the SIEMENS 5SY42508, snap it onto a standard DIN rail. Ensure the circuit is de-energized. Connect wires to the screw-clamp terminals using the correct torque specified by SIEMENS. Verify polarity for DC applications. Always follow local electrical codes and the manufacturer's instructions.

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 d-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: 25 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42258). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
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SIEMENS IEC Supplementary Protector: 25 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42258). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC Supplementary Protector: 20 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42208). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
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SIEMENS IEC Supplementary Protector: 20 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42208). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC Supplementary Protector: 13 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42138). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
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SIEMENS IEC Supplementary Protector: 13 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42138). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC Supplementary Protector: 1 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42018). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
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SIEMENS IEC Supplementary Protector: 1 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42018). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC Supplementary Protector: 63 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42638). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
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SIEMENS IEC Supplementary Protector: 63 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42638). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC Supplementary Protector: 4 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42048). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
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SIEMENS IEC Supplementary Protector: 4 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42048). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.

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SIEMENS IEC Supplementary Protector: 32 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42328). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
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SIEMENS IEC Supplementary Protector: 32 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42328). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC Supplementary Protector: 40 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42408). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
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SIEMENS IEC Supplementary Protector: 40 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42408). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC Supplementary Protector: 8 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42088). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
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SIEMENS IEC Supplementary Protector: 8 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42088). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC Supplementary Protector: 2 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42028). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 2 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42028). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC Supplementary Protector: 0.5 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42058). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 0.5 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42058). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC Supplementary Protector: 0.3 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42148). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 0.3 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42148). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC Supplementary Protector: 6 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42068). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 6 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42068). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC Supplementary Protector: 16 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42168). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 16 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42168). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: D; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.