Siemens 3VA2125-6KP42-0AA0

3VA21 4P 25A 85KA Circuit Breaker with ETU850-LSI

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Siemens 3VA2125-6KP42-0AA0 3VA21 4P 25A 85KA Circuit Breaker with ETU850-LSI — Circuit Breakers & Fuses
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Siemens 3VA2125-6KP42-0AA0 3VA21 4P 25A 85KA Circuit Breaker with ETU850-LSI — Circuit Breakers & Fuses
Siemens 3VA2125-6KP42-0AA0 3VA21 4P 25A 85KA Circuit Breaker with ETU850-LSI — Circuit Breakers & Fuses
Siemens 3VA2125-6KP42-0AA0 3VA21 4P 25A 85KA Circuit Breaker with ETU850-LSI — Circuit Breakers & Fuses

Product Description

Lifecycle Status:

The 3VA21 circuit breaker, designed for low voltage applications, incorporates an electronic trip unit for enhanced operational efficiency. This model operates within a 4-pole configuration and is rated for 25A, providing robust protection with a high breaking capacity classified as Class H. Specifically, it can handle short-circuit conditions with an Icu of 85kA at 415V and 2.5kA at 690V.

Equipped with the ETU850 trip unit, this circuit breaker features an LCD display for metering, allowing for precise monitoring of electrical parameters. The device supports connection through a lug terminal and includes a nut keeper for secure installation. Its dimensions measure 5.5 inches in width, 7.1 inches in height, and 4.2 inches in depth, making it suitable for various installation environments.

Additional features include adjustable overload protection settings ranging from 10A to 25A, while the short-circuit protection can be configured between 0.6 to 10 times the rated current. Furthermore, the circuit breaker offers N conductor protection, adjustable up to 160%, ensuring reliable operation in demanding conditions.

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Offer details

Offer from:
Trusted supplier — Romania, member since 2023, 1–4 employees 
Availability:
On requestLead time: 21 days
Warranty:
Not specified
Condition:
New Surplus
New Surplus - A new, unused, undamaged item without a manufacturer guarantee. The item may come without original packaging or in replacement packaging. If provided, the box may have been opened.
The Seller is responsible for shipping the product and invoicing

Specifications

Brand
Siemens
Number of poles
4
Rated voltage
690 V
Motor drive optional
Motor drive integrated
Degree of protection (IP)
IP40
Rated permanent current Iu
25 A

Available Offers

(3)
ConditionAvailabilitySupplierWarrantyAction
Siemens 3VA2125-6KP42-0AA0
Condition
New Surplus
Availability
On requestLead time: 21 days
Supplier
RomaniaTrusted supplier — member since 2023, 1–4 employees 
Warranty
Not specified
Siemens 3VA2125-6KP42-0AA0
Condition
New Factory Sealed
Availability
On requestLead time: 5 days
Supplier
GermanyTrusted supplier — member since 2024 
Warranty
Not specified
Siemens 3VA2125-6KP42-0AA0
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 3VA2125-6KP42-0AA0, including specifications and features.

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CAD Models

3D CAD model and technical drawings, ready for your design software.

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Product data updated: 22-08-2026

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