What the designation means

F202 — the ABB residual current circuit breaker series.

AC — the type of residual current it responds to (alternating residual current).

40 — the rated current in amperes.

0.03 — the rated residual operating current, 30 mA.

Where a four-pole 40 A 30 mA device is used

Three-phase final circuits that need personnel protection

Small three-phase distribution boards feeding socket and mixed circuits

Circuits supplying equipment where earth leakage protection is required by the installation standard

Points to confirm before ordering

That the residual current type (AC) suits the loads on the circuit — drives and inverters generally require Type A or better.

The rated current against the circuit design current and the cable it protects.

Whether overcurrent protection is provided separately upstream.

That the device will be installed with correct discrimination from any upstream residual current device.

Pricing

The legacy version of this page published a price list. Prices are not reproduced here: brief §30 requires commercial data to come from supplied current sources, and the legacy figures carried no validity date. Send us your requirement for a current quotation.