Siemens
Siemens 2KJ3406-5FN23-2AK1-Z 40A 400V Miniature Circuit Breaker
Siemens 2KJ3406-5FN23-2AK1-Z Miniature Circuit Breaker
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Same-day dispatch
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Worldwide delivery
US, EU, Asia, Middle East
Veteran-owned
CAGE: 9NK75
3-pole configuration
40A current rating
400V operational voltage
10kA breaking capacity
Overload and short-circuit protection
DIN rail mounting
Product description
The Siemens 2KJ3406-5FN23-2AK1-Z is a 3-pole Miniature Circuit Breaker designed with a 40A current rating and a 400V voltage rating. It offers reliable protection for electrical circuits.
This breaker is suitable for various applications including main distribution boards, branch circuits in industrial facilities, and equipment requiring 40A overcurrent protection.
Stanlo Automation, a veteran-owned distributor of surplus industrial automation parts, provides the Siemens 2KJ3406-5FN23-2AK1-Z. We ensure quality and offer efficient shipping to minimize your operational interruptions.
Technical specifications
| Part Number | 2KJ3406-5FN23-2AK1-Z |
| Manufacturer | Siemens |
| Type | Miniature Circuit Breaker |
| Poles | 3 |
| Current Rating | 40A |
| Voltage Rating | 400V |
| Breaking Capacity | 10kA |
Common applications
Main Distribution Boards
Industrial Branch Circuits
Heavy Duty Outlets
Motor Protection
Commercial Power Distribution
Manufacturing Equipment
HVAC Systems
Compatible systems
Standard 35mm DIN rail
Industrial electrical distribution
Control panel assemblies
Also known as
Siemens 3-pole 40A MCB
2KJ3 Series Breaker
400V 10kA Circuit Breaker
Replaces / compatible with
This Siemens 2KJ3 series breaker is designed for specific overcurrent protection requirements. Refer to Siemens technical documentation for detailed replacement information.
Technical note
Expert tip
Ensure adequate ventilation around the breaker when operating at its 40A rating, especially in enclosed panels, to prevent overheating.What happens next?
1
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2
Account manager assigned
Confirms your part's spec and condition
3
Your quote delivered
Tailored to your specific requirements
Frequently asked questions
What is the breaking capacity of the Siemens 2KJ3406-5FN23-2AK1-Z circuit breaker?
The Siemens 2KJ3406-5FN23-2AK1-Z miniature circuit breaker features a breaking capacity of 10kA. This rating ensures its ability to safely interrupt fault currents up to 10,000 amperes, protecting electrical systems.