The Hager MCB 3P 15kA B-50A 3M miniature circuit breaker protects three-phase circuits from overloads and short circuits. B-curve 50A for resistive loads; Ics 15kA, Icu 30kA at 230V (15kA at 400V). Ue 415V AC, Ui 500V, Uimp 6kV. Compact 3 modules, screw terminals with biconnect bottom, 1-35 mm². IP20, 50-60Hz, -25 to 70°C. 360° mounting, 20k mech/4k elec cycles. Ideal for commercial/industrial panels.

EAN

3250614645815

Packaging

1 Piece

Miniature circuit breakers (MCB and MCB Multipolar)

Miniature Circuit Breaker 2P 40A Curve B 20kA 2 Modules 415V AC NQN350

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Technical properties
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Complete your system

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

Technical properties

Rated current

50 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

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

15 kA

Type of pole

3P
Curve

B

Number of modules

3

Rated short-circuit breaking capacity Icn AC according to IEC 60898-1

10 kA

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

415 - 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

Total power loss under IN

15.40 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

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RoHS conform Yes