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Siemens 5SY4318-7
Supplementary Protector 3P 15A 480V C-Trip
Product Description
The Supplementary Protector is a 3-pole circuit breaker with a rated current of 15 Amps and is suitable for 480 VAC systems. It features a trip characteristic of curve C, making it appropriate for applications with moderate inrush currents.
With a width of 54 mm and a depth of 70 mm, this device is compact yet efficient. It meets UL1077 standards and is classified under IEC mini circuit breakers, ensuring reliable performance in demanding environments. This model has a rated short-circuit breaking capacity of 20 kA at 400 V and 10 kA at 230 V, providing robust protection against overloads and short circuits.
The device has an IP20 degree of protection, indicating its suitability for indoor use where direct contact with conductive parts is not likely. Designed for ambient temperatures ranging from -40 °C, it operates effectively even in harsh conditions. The Supplementary Protector is built for flexibility with additional equipment options and accommodates conductor cross-sections of 0.75 mm² for both solid and multi-wired connections.
For reference, the product is listed under UL File E116386 in Volume 1 Section 2.
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Offer details
- Offer from:
Trusted supplier — Germany, member since 2024 - Availability:
- 9 pcs.Updated at: 15-09-2026In-Stock
- Warranty:
- 24 months
- Condition:
- Refurbished
Specifications
- Brand
- Siemens
- Voltage type
- AC
- Rated current
- 15 A
- Pollution degree
- 3
- Rated voltage
- 400 V
- Explosion-proof
- Over voltage category
- 3
Available Offers
(3)| Condition | Availability | Supplier | Warranty | Action | |
|---|---|---|---|---|---|
 | Condition Refurbished | Availability 9 pcs. Updated at: 15-09-2026In-Stock | SupplierGermanyTrusted supplier — member since 2024 | Warranty 24 months | |
| Condition New Factory Sealed | Availability On requestLead time: 30 days | SupplierGermanyTrusted supplier — member since 2024 | Warranty Not specified | |
 | Condition New Factory Sealed | Availability On requestLead time to be confirmed | Supplier ItalyTrusted supplier — member since 2021, 10–19 employees | Warranty 12 months |
Offer with manufacturer lead time
Directly from the manufacturer - with a confirmed, predictable, and fully transparent delivery time.
Documents
Data Sheet
Datasheet for Siemens 5SY4318-7, including specifications and features.
CAD Models
3D CAD model and technical drawings, ready for your design software.
Product data updated: 15-09-2026
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