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Siemens 2KJ3508-5EM23-9FR1-Z 3VA Molded Case Circuit Breaker

Siemens 3VA molded case circuit breaker, 1250A, with adjustable thermal-magnetic release.

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ManufacturerSiemens

Part number2KJ3508-5EM23-9FR1-Z

Type Molded Case Circuit Breaker

Series 3VA

Poles 3

Rated Current 1250A

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12-month warranty

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Worldwide delivery

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Veteran-owned

CAGE: 9NK75

High current rating (1250A) Adjustable thermal-magnetic trip unit Robust construction 55kA breaking capacity Reliable for main feeders

Product description

The Siemens 2KJ3508-5EM23-9FR1-Z is a high-capacity 3VA molded case circuit breaker designed for robust protection of main feeders and large industrial loads. It features a 3-pole configuration, a 1250A rated current, and a breaking capacity of 55kA at 415V, equipped with an adjustable thermal-magnetic trip unit.

This breaker is essential for the main distribution panels of large facilities, heavy machinery, and power generation plants, providing critical overcurrent and short-circuit protection to safeguard electrical infrastructure.

Stanlo Automation, a veteran-owned supplier of surplus automation parts, offers the Siemens 2KJ3508-5EM23-9FR1-Z. We ensure that you receive reliable and cost-effective components for your industrial automation needs.

Technical specifications

Type	Molded Case Circuit Breaker
Series	3VA
Poles	3
Rated Current	1250A
Breaking Capacity	55kA at 415V
Release Type	Adjustable Thermal-Magnetic

Common applications

Main power distribution

Industrial facilities

Power generation

Heavy machinery

Large electrical systems

Compatible systems

Designed for integration into high-power industrial electrical systems. Ensure compatibility with existing switchgear and busbars.

Also known as

Siemens 3VA10125-5EM23-9FR1 3VA 1250A breaker Siemens high current MCCB

Replaces / compatible with

Ideal for protecting main feeders and large industrial loads, this breaker can replace existing 1250A circuit breakers or be specified for new installations requiring high-capacity protection.

Technical note

Expert tip

When setting the adjustable thermal-magnetic trip unit, consult the Siemens documentation to ensure optimal protection without compromising operational continuity.

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Frequently asked questions

What type of trip unit does the Siemens 2KJ3508-5EM23-9FR1-Z circuit breaker utilize?

The Siemens 2KJ3508-5EM23-9FR1-Z circuit breaker features an adjustable thermal-magnetic trip unit. This allows for flexibility in setting the overload and short-circuit protection thresholds according to specific application requirements.