The Hager MCB 1P 25kA B-20A 1M miniature circuit breaker protects single-phase circuits from overloads and short circuits. Rated 20A with B-curve, it delivers 25kA Icu (IEC 60947-2), 7.5kA Ics, and 10kA Icn (IEC 60898-1). 240-415V AC, 50/60Hz. Compact 1 module (17.5 mm), screw terminals with biconnect bottom, 2.8 Nm, 1-35 mm². IP20, -25 to 70°C, 360° mounting, 20k mech/4k elec cycles—ideal for robust residential/commercial use.

EAN

3250614645471

Packaging

1 Piece

Miniature circuit breakers (MCB and MCB Multipolar)

Fuse kit Quadro Evo 2x250A, 400x600 mm NQN120

Technical properties
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Technical properties

Rated current IN

20 A
Rated service breaking capacity Ics under 230 V AC according to IEC 60947-2

7.50 kA
Rated ultimate short-circuit breaking capacity Icu AC IEC 60947-2

25 kA
Rated current at -15°C

24.28 A
Rated current at -10°C

23.8 A
Rated current at -5°C

23.33 A
Rated current at 0°C

22.85 A
Rated current at 5°C

22.38 A
Rated current at 10°C

21.9 A
Rated current at 15°C

21.43 A
Rated current at 20°C

20.95 A
Rated current at 25°C

20.48 A
Rated current at 30°C

20 A
Rated current at 35°C

19.45 A
Rated current at 40°C

18.9 A
Rated current at 45°C

18.35 A
Rated current at 50°C

17.8 A
Rated current at 55°C

17.25 A
Rated current at 60°C

16.7 A
Rated current at 65°C

16.15 A
Rated current at 70°C

15.6 A
Rated ultimate short-circuit breaking capacity Icu under 230 V AC IEC 60947-2

25 kA

Type of pole

1P
Curve

B

Number of modules

1

Nominal tightening torque top terminal

2.80 - 2.80 Nm
Nominal tightening torque down terminal

2.80 - 2.80 Nm
Nominal tightening torque

2.80 - 2.80 Nm
Type of bottom connection for modular devices

biconnect
Type of top connection for modular devices

Screw terminal
360° mounting position possible

Yes

Rated operational voltage Ue

230 - 240 V
Type voltage supply

AC
Rated insulation voltage Ui

500 V
Rated impulse withstand voltage Uimp

6000 V

Frequency

50 - 60 Hz

Cross-section of input and output with screws, for massive conductors

1 - 35 mm²
Cross-section of input and output with screws, for flexible conductors

1 - 25 mm²
Cross-section of input with screws, for flexible conductors

1 - 25 mm²
Cross-section of input with screws, for massive conductors

1 - 35 mm²

Ingress Protection (IP) class

IP20

Degree of pollution according to IEC 60664 / IEC 60947-2

2
Class of energy limitation I²t

3
Air humidity protection

For all climates
Operating temperature

-25 - 70 °C

Power dissipation at IN

2.56 W

Type of connection

Screw terminal
Top connection alignment for modular devices

Aligned terminal
Down connection alignment for modular devices

Aligned terminal

Height

83 mm
Width

17.50 mm
Depth

70 mm

Environmental value

We are committed to bettering our environmental performance by reducing our footprint while acting as a sustainability enabler for our customers. Learn More

RoHS conform Yes