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Onesto 100A 240V - 415V 6kA AC 3 Pole Circuit Breaker

MCB's detect over currents due to both overload and fault currents. The MCB will operate and interrupt the supply to prevent damage to the installation. Domestic MCBs have a short circuit breaking capacity of 6000A (M6). The current carrying capacity of the cable should always exceed the current rating of the MCB to prevent damage.
The operating dolly may be locked in either the ON or OFF position without affecting the ability of the trip mechanism to operate. When in the off position, a contact gap of 4 mm is achieved. The multi pole MCB’s are equipped with a strong terminal design which gives a better grip on the cable. The unique design of the terminal compensates and corrects for any distortion or possible loss in terminal torque.

Please note that the image is for illustrative purposes only and may not represent the actual specifications.

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Regular Price: R 979.00

Special Price Excl. Tax: R 698.26 Incl. Tax: R 803.00


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Product Description


A more significant limitation capability of short circuit current

  • The limitation capability of a MCB is an internal characteristic which makes it possible to open the circuit before the short circuit current reaches its prospective maximum value.

A MCB with a better current limitation capability provides several advantages

  • To reduce the thermal effects in the cable i.e increase life span of cables.
  • To reduce the mechanical effects and electrodynamics forces on the different contacts.
  • To reduce the electromagnetic effects which can be harmful to sensitive equipment / loads.

Technical Information

  • Type: 2Pole.
  • Rated current : 100 A.
  • Curve : C.
  • Rated short circuit breaking capacity : 6 kA.
  • Rated service short circuit breaking capacity according to NF EN 60898 : 6 kA.
  • Frequency : 50/60 Hz.
  • Rated operational AC voltage : 230V /400V.
  • Operating temperature : -25 to 60 °C.

Additional Information

Additional Information

Disclaimer Please note that stock availability is subject to prior sales. Prices exclude delivery. The image serves as an example of what the product looks like and may differ slightly in appearance.
Guarantee/ Warranty No


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