ABB F204 B-125/0.3 L RCD - 4P - Type B - 125A - 300mA

ABB F204 B-125/0.3 L RCD – 4P – Type B – 125A – 300mA

ABB F204 B-125/0.3-L 4 pole Type B residual current circuit breaker with 125 A rated current, 300 mA sensitivity and delayed high immunity operation for advanced industrial electrical protection.

SKU: F204 B-125/0.3LAlt SKU: F204 B-125/0.3-LMPN: 2CSF204523R3950
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Why Choose the ABB F204 B-125/0.3-L Residual Current Circuit Breaker?

The ABB F204 B-125/0.3-L is a professional 4 pole residual current circuit breaker (RCCB) designed to protect electrical installations against earth fault currents while providing enhanced protection for applications containing power electronic equipment. As part of the trusted ABB F200 Type B series, it delivers dependable protection for commercial, industrial and specialist installations.

This RCCB features Type B residual current protection, enabling detection of alternating residual currents, pulsating DC residual currents and smooth DC earth fault currents. The 10 ms delayed High Immunity operating characteristic improves resistance to nuisance tripping while maintaining excellent protection against dangerous earth leakage currents. It is particularly suitable for installations containing variable speed drives, frequency converters, UPS systems and EV charging infrastructure.

With a 125 A rated current, 300 mA residual operating current and 4 pole configuration, the ABB F204 B-125/0.3-L is ideal for higher load three phase distribution systems where advanced residual current protection and fire protection are required.

Key Advantages

  • Professional 4 pole RCCB for commercial and industrial installations.
  • 125 A rated current for higher load applications.
  • 300 mA residual current sensitivity for fire protection and fault protection.
  • Type B protection for AC, pulsating DC and smooth DC residual currents.
  • 10 ms delayed High Immunity operating characteristic reduces nuisance tripping.
  • Suitable for installations with drives, inverters, UPS systems and EV charging equipment.

Key Features

  • ABB F200 Type B RCCB series.
  • F204 B-125/0.3-L model.
  • 125 A rated current.
  • 300 mA residual operating current.
  • 4 pole configuration.
  • Type B earth leakage protection.
  • 10 ms delayed High Immunity operation.
  • Compact DIN rail mounting design.

Advanced Type B Earth Leakage Protection

Residual current circuit breakers continuously monitor current flowing through live conductors and disconnect the electrical supply when dangerous earth leakage currents are detected. This helps reduce the risk of electric shock while protecting electrical installations against insulation faults.

The ABB F204 B-125/0.3-L is designed for applications where smooth DC fault currents may be generated by electronic equipment. Its wide frequency detection range and high immunity characteristics provide dependable protection while maintaining excellent system availability.

Typical Applications

  • Variable frequency drive installations.
  • Industrial automation systems.
  • EV charging infrastructure.
  • UPS and inverter systems.
  • Renewable energy installations.
  • Commercial and industrial three phase distribution systems.

Technical Specifications

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Product Series ABB F200
Current 125 A
Phase Three Phase
Poles 4-pole
Device Type RCD
Residual Current 300 mA
RCD Type Type B
Manufacturer ABB
Series F200 Type B
Model F204 B-125/0.3-L
Product ID 2CSF204523R3950
EAN 8012542989202
Product type Residual Current Circuit Breaker (RCCB)
Rated current 125 A
Rated residual operating current 300 mA
Residual current type Type B
Operating characteristic 10 ms Delay (High Immunity)
Maximum surge current 3 kA
Number of poles 4
Rated voltage 230/400 V AC
Frequency range 50 / 60 Hz
Fault current detection frequency 0 to 2 kHz
Standards IEC/EN 61008-1, IEC/EN 61008-2-1, IEC/EN 62423
Protection rating IP20
Mounting type DIN rail
Dimensions (H × W × D) approx. 85 × 72 × 75 mm
Weight approx. 0.50 kg
HS Code 85363030
Country of Manufacture Germany

Frequently Asked Questions

What is the ABB F204 B-125/0.3-L used for?

It provides advanced Type B residual current protection for commercial and industrial electrical installations where smooth DC fault currents may occur.

What is the rated current of this RCCB?

The ABB F204 B-125/0.3-L has a 125 A rated current.

What residual current sensitivity does this model provide?

This version provides 300 mA residual current sensitivity, commonly used for fault protection and fire protection applications.

Why would I choose a Type B RCCB?

Type B RCCBs detect AC, pulsating DC and smooth DC residual currents, making them suitable for variable speed drives, inverters, EV chargers, UPS systems and other power electronic equipment.

What does the High Immunity delayed characteristic provide?

The integrated 10 ms delayed High Immunity characteristic helps reduce nuisance tripping caused by transient electrical disturbances while maintaining reliable protection.

Trusted by Electrical Professionals Worldwide

ABB F200 Type B residual current circuit breakers are trusted by electrical contractors, OEMs and industrial engineers for providing dependable protection in demanding installations containing modern power electronic equipment.