Hager 3P 20A B-curve MCB (3 modules) protects three-phase circuits from overloads and short circuits. With 25kA Icu at 230/400V, 7.5kA Ics (IEC 60947-2) and 10kA Icn (IEC 60898-1), it suits commercial/industrial panels with high fault levels. Rated 415V AC, Ui 500V, Uimp 6kV, 50-60Hz. Easy screw/biconnect terminals (1-35 mm²), IP20, -25…70°C, durable: 4,000 electrical/20,000 mechanical operations.

EAN

3250614645778

Packaging

1 Piece

Miniature Circuit Breaker 3P 10A Curve B 25kA 415V AC 3 Modules NQN320

Phase out product: please contact your electrical wholesaler for availability

Accessories
Technical properties
Environmental value
Documentations

Download the data sheet

Complete your system

Terminal cover 1 products available
Modular phase busbar 3 products available
AOB type AC 2 products available
Protective cap/strip for phase busbar 1 products available

Technical properties

Rated current IN

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

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

25 kA
Rated ultimate short-circuit breaking capacity Icu under 400 V AC IEC 60947-2

25 kA
Rated current at -15°C

24.02 A
Rated current at -10°C

23.57 A
Rated current at -5°C

23.12 A
Rated current at 0°C

22.68 A
Rated current at 5°C

22.23 A
Rated current at 10°C

21.79 A
Rated current at 15°C

21.34 A
Rated current at 20°C

20.89 A
Rated current at 25°C

20.45 A
Rated current at 30°C

20 A
Rated current at 35°C

19.45 A
Rated current at 40°C

18.91 A
Rated current at 45°C

18.36 A
Rated current at 50°C

17.81 A
Rated current at 55°C

17.26 A
Rated current at 60°C

16.72 A
Rated current at 65°C

16.17 A
Rated current at 70°C

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

50 kA

Type of pole

3P
Curve

B

Number of modules

3

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 - 415 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

8.04 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

52.50 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