Hager in the world 
The Hager earth leakage add-on block 4P 40A 300mA AC class provides residual current protection for 3-phase + neutral circuits when combined with compatible breakers. Its 300 mA sensitivity and 40 A rating suit distribution and fire-protection selectivity. Double output and aligned terminals simplify wiring, while 3-module width saves space. Rated 230-400 V, Ui 500 V, Uimp 4 kV, 50 Hz. Neutral left.
EAN
3250611310082
VPE
1 piece
Add-on RCCB double output 4P 25A 300mA AC 230-400V 3 modules BFC840
catalog.lists.product_addition.login_popup.title
catalog.lists.product_addition.login_popup.descriptive_text
Technical characteristics
Architecture
-
Neutral positionLeft
-
Number of poles4
Capacity
-
Number of modules3
Voltage
-
Rated operational voltage Ue230 - 400 V
-
Rated insulation voltage Ui500 V
-
Rated impulse withstand voltage Uimp4000 V
Frequency
-
Frequency50 - 50 Hz
Electric current
-
Rated residual operating current Idn300 mA
-
Rated current IN40 A
Connectivity
-
Down connection alignment for modular devicesAligned terminal
Dimensions
-
Height102 mm
-
Width52.50 mm
-
Depth70 mm
catalog.pageproduct.title_sustainability.h2
We are committed to bettering our environmental performance by reducing our footprint while acting as a sustainability enabler for our customers. Learn More
catalog.pageproduct.sustainability_block.downloads_h3
Downloads
-
GeneratedProductDatasheet
Hager Product data sheet BFC840
Earth leakage add-on-block with double output 4P 40A 300mA AC class
PDF -
ProductECDeclaration
Declaration of conformity en-US 2026-07-14
PDF261,94 kB
More documentation
Discover our other products of this range
-
5
-
1
BFC825Earth leakage add-on-block with double output 4P 25A 300mA AC class -
2
BDC840Earth leakage add-on-block with double output 4P 40A 30mA AC class -
3
BDC863Earth leakage add-on-block with double output 4P 63A 30mA AC class -
4
BD264Earth leakage add-on block 2P 63A 30mA AC Class -
5
BDH480EEarth leakage add-on-block 4P 125A 30mA type A HI