• NOARK 3P overcurrent circuit breaker Type B 40A 6kA AC (100057)

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NOARK Ex9BN 3P B 40A 6kA AC Circuit Breaker

An overcurrent circuit breaker is a component of an electrical installation whose function is to break the continuity of a circuit when the current exceeds the safe value for that circuit. The circuit breaker is designed to control and protect against the effects of overloads and short circuits of consumer circuits of installations as well as household electrical appliances. It is intended for repeated use. Characteristics of equipment with low inrush current: heaters, domestic appliances, etc.

  • Product colour: light grey
  • Commercial designation: 100057
  • Number of poles: 3P (three-phase)
  • Number of 18mm modules: 3
  • Characteristics: B
  • Rated current In: 40 A
  • Rated short-circuit breaking capacity Icn: 6 kA
  • Rated switching voltage Ue (AC): 400 V
  • Rated frequency: 50/60 Hz
  • Rated surge voltage Uimp: 6 kV
  • Minimum operating voltage Ubmin: 12 V AC/DC
  • Rated insulation voltage Ui: 690 V
  • Mounting: 35 mm rail (TH35/DIN)
  • Connection: rail/wind terminal, screw terminals
  • Max. cross-section of connecting conductors: 35 mm²
  • Degree of protection: IP20
  • Operating temperature: -30°C ÷ +70°C
  • Dimensions (W × H × D): 54×83×80 mm
  • Certifications: CE
  • Standards: PN-EN 60898-1, IEC/EN 60947-2



Modular overcurrent circuit breakers of the Ex9BN series are universal devices for all types of applications meeting the high standard requirements for domestic use in accordance with EN 60898 in the current rating range from 1 to 63 A. The rated short-circuit breaking capacity Icn is 6kA. In any case, Icn applies to all versions of the circuit breakers, i.e. up to 63 A rated current and B, C, D trip characteristics.

The overcurrent circuit breakers of the Ex9BH series are available in 1, 1+N, 2, 3, 3+N, 4 -pole versions, where the pole width corresponds to one module - 18 mm. Tripping characteristics: B, C, D. In terms of mechanical performance, the Ex9BH and Ex9BN series are fully compatible.

They can be combined with a wide range of accessories, including auxiliary contacts, auxiliary trip contacts, rising, undervoltage and overvoltage triggers or residual current blocks. Various combinations of accessories are possible. These combinations are limited only by the total number, not the type of accessories - all components fit together. Up to three auxiliary contact units or tripping auxiliary contacts and up to two trip units can be fitted.



  • Overcurrent circuit breakers according to IEC / EN 60898-1
  • Rated short-circuit breaking capacity Icn 6 kA
  • 1 to 4 poles
  • Tripping characteristic curves B, C, D
  • Rated current up to 63 A
  • Rated voltage 230/400 V AC, 48 V DC (per pole)
  • Wide range of accessories