• NOARK 3P overcurrent circuit breaker Type B 50A 6kA AC (100058)

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A miniature circuit breaker is a component of an electrical system whose task 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 electrical equipment in households. Designed for multiple use. Characteristics of a device with a small starting current: heaters, household appliances, etc.

  • Product colour: light grey
  • Trade designation: 100058
  • Number of poles: 3P (three phase)
  • Number of 18mm modules: 3
  • Characteristics: B
  • Rated current In: 50 A
  • Rated short-circuit breaking capacity Icn: 6 kA
  • Nominal 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: 690V
  • Mounting: 35 mm rail (TH35/DIN)
  • Connection method: rail/elevator clamp, thread terminals
  • Max. cross-section of connecting cables: 35 mm²
  • Ingress protection: IP20
  • Operating temperature: -30°C ÷ +70°C
  • Dimensions (W × H × D): 54×83×80 mm
  • Certificates: CE
  • Standards: PN-EN 60898-1, IEC/EN 60947-2



The modular miniature circuit breakers of the Ex9BN series are universal devices for all types of applications that meet the high requirements of the standards for domestic use according to EN 60898 in the range of rated currents from 1 to 63 A. The rated short-circuit breaking capacity Icn is 6kA. In any case, the Icn refers to all versions of the circuit breakers, i.e. to the nominal current up to 63 A and the tripping characteristics B, C, D.

The Ex9BH series miniature circuit breakers 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. With regard to mechanical parameters, the Ex9BH and Ex9BN series are fully compliant.

They can be combined with a wide range of accessories, including auxiliary contacts, tripping auxiliary contacts, surge releases, undervoltage and overvoltage or residual current blocks. It is possible to create a variety of accessory combinations. These combinations are limited only by the total number and not the type of accessories – all the pieces fit together. Up to three auxiliary contact units or tripping auxiliary contacts and up to two tripping units can be fitted.



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



NOARK Electric is engaged in the development, production and distribution of electrotechnical equipment and its components. The company is part of a group employing over 25,000 people. NOARK Electric has invested millions of euros in the development of its own products, developed and manufactured using the latest technologies.

The high durability of our products is confirmed by the number of joining cycles, which far exceeds the values required by the applicable standards. In addition, NOARK provides a five-year manufacturer's warranty on all its products.

NOARK Electric has been awarded in the National Plebiscite of the Popularity of Products and Services 2019, assessing the quality of products and services in the category "Quality and Innovation in the Construction Industry".