Siemens Supplementary Protector: 16 A Amps, 72V DC, 10kA at 230/400V AC, Screw Clamp
The Siemens 5SY4 series IEC supplementary protector (SKU 3G-OTH-21458) is a 16 A, A-curve, 1-pole UL1077 DIN rail-mount device. It is rated for 10kA at 230/400V AC and 72V DC, with screw-clamp terminals. This…
SKU 3G-OTH-21458
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
Need installation or engineering help?
Ask a question
Product Description
The Siemens 5SY4 series IEC supplementary protector (SKU 3G-OTH-21458) is a 16 A, A-curve, 1-pole UL1077 DIN rail-mount device. It is rated for 10kA at 230/400V AC and 72V DC, with screw-clamp terminals. This supplementary protector provides overcurrent protection for branch circuits and equipment.
Frequently Asked Questions
What is the Siemens 5SY4 supplementary protector used for?
The Siemens 5SY4 supplementary protector provides overcurrent protection for branch circuits and equipment in industrial control panels. Its A-curve trip characteristic suits sensitive electronic loads. It is a UL1077 listed device for DIN-rail mounting, rated 16 A at 230/400V AC and 72V DC.
What are the specifications of the Siemens 5SY41165?
The Siemens 5SY41165 is a 16 A, 1-pole supplementary protector with A-curve trip. It has a max AIR rating of 10kA at 230/400V AC and a DC voltage rating of 72V DC. Terminal connection is screw clamp. It is part of the 5SY4 series and is UL1077 listed for DIN-rail mounting.
Where to buy Siemens 5SY4 supplementary protectors worldwide?
3G Electric supplies Siemens 5SY4 supplementary protectors 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 genuine Siemens components for industrial applications.
How to install a Siemens 5SY4 supplementary protector?
Install the Siemens 5SY4 on a standard DIN rail by clipping it into place. Use screw-clamp terminals for wiring; torque to manufacturer specifications. Ensure the circuit is de-energized before installation. The A-curve device is suitable for protecting sensitive equipment; verify system voltage does not exceed 72V DC or 230/400V AC.
Used in
Common applications for SiemensSiemens 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.
