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SIEMENS IEC Supplementary Protector: 40 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: 40 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp

The SIEMENS IEC Supplementary Protector (SKU 30XV11, MPN 5SY42405) is a 40 A, A-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-127925

Brand
SIEMENS IEC
Item
Supplementary Protector: 40 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
5SY42405
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 30XV11, MPN 5SY42405) is a 40 A, A-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 5SY42405 supplementary protector used for?

The SIEMENS 5SY42405 is a 40 A, A-Curve, 2-pole UL1077 supplementary protector used to protect branch circuits and equipment from overcurrent and short circuits in industrial control panels, HVAC systems, and machinery. It mounts on a DIN rail and is rated for 400V AC and 72V DC applications.

What are the specifications of the SIEMENS 5SY42405?

The SIEMENS 5SY42405 is a 40 A, A-Curve, 2-pole supplementary protector from the 5SY4 series. It has a breaking capacity of 10kA at 400V AC, a DC rating of 72V DC, and screw clamp terminals. It is UL1077 listed and mounts on a standard DIN rail.

Where to buy the SIEMENS 5SY42405 worldwide?

3G Electric supplies the SIEMENS 5SY42405 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 40 A, 2-pole UL1077 protector.

How to install the SIEMENS 5SY42405 supplementary protector?

Install the SIEMENS 5SY42405 by snapping it onto a 35 mm DIN rail. Ensure the supply is off, then connect phase and neutral conductors to the screw clamp terminals (rated for 400V AC / 72V DC). Torque terminals per manufacturer specs. Always follow local electrical codes and the product datasheet.

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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SIEMENS IEC Supplementary Protector: 63 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42635). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; 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 5SY42635). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC Supplementary Protector: 10 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42105). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
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SIEMENS IEC Supplementary Protector: 10 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42105). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC Supplementary Protector: 25 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42255). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; 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 5SY42255). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC Supplementary Protector: 3 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42035). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
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SIEMENS IEC Supplementary Protector: 3 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42035). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; 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 5SY42165). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
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SIEMENS IEC Supplementary Protector: 16 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42165). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; 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 5SY42015). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; 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 5SY42015). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC Supplementary Protector: 50 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42505). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
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SIEMENS IEC Supplementary Protector: 50 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42505). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC Supplementary Protector: 32 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42325). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; 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 5SY42325). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; 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 5SY42135). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; 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 5SY42135). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; 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 5SY42065). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; 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 5SY42065). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; 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 5SY42205). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 20 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42205). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC Supplementary Protector: 1.6 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42155). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 1.6 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42155). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; 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 5SY42045). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.
SIEMENS IEC
SIEMENS IEC Supplementary Protector: 4 A Amps, 72V DC, 10kA at 400V AC, Screw Clamp, 5SY4, 400V AC (MPN 5SY42045). Key specifications — attr195785: Screw Clamp; attr195787: 400V AC; attr195786: A; attr195783: 72V DC; attr195784: 10kA at 400V AC; attr215906: 5SY4; attr211128: SIEMENS.