Industrial Circuit Breaker 3P | 400A | 50kA | FMC4/3U Promfactor Baltic FMC43U0400

Technical Specifications:

Standard: IEC/EN 60947-2
Rated breaker current (Ie): 400 A
Operating frequency: 50/60 Hz
Insulation voltage (Ui): 800 V
Rated operational voltage (Ue): ~690 V
Impulse voltage (Uimp): 8000 V
Number of poles: 3
Rated operational breaking capacity (Ics) (AC 380/415V): 25 kA
Ultimate breaking capacity (Icu) (AC 380/415V): 50 kA
Electrical and mechanical endurance: 1,500 cycles / 5,000 cycles
Additional equipment connection: Yes
Operating ambient temperature: -25…+55 °C
Storage temperature: -25…+70 °C
Altitude above sea level: 2000 m
Weight: 4.90 kg
Functions:

Short-circuit protection: Ensures fast and reliable network protection in case of a short circuit.
Overload protection: Protects electrical devices from prolonged overload.
Quick operation: Allows efficient control of electrical circuits during network switching.
High breaking capacity: Enables use of the switch in high-power industrial installations.
Additional equipment support: Ability to connect additional accessories and modules.
Durability: Resistant to temperature variations and mechanical impact, ensuring a long service life even in harsh conditions.
Application Areas:

Industrial power distribution systems
Factories and logistics centers
Commercial buildings and infrastructure facilities
High-power electrical networks
Electrical panels and automation systems
Pros:

High breaking capacity ensures greater safety
Resistance to electrical and mechanical impacts
Wide operating temperature range (-25…+55°C)
Ability to connect additional equipment
Complies with international safety standards (IEC/EN 60947-2)
Cons:

High weight may require secure mounting
Higher price compared to lower-power switches
Requires a specialist for installation and maintenance
The automatic circuit breaker is an excellent choice for industrial use when a high level of reliability and protection is needed. Its versatility, durability, and functionality ensure safe operation of the electrical network even under complex conditions.