Key Terms And Definitions For Specifying The Switching Capacity - Siemens SENTRON Manual

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Appendix

9.3

Key terms and definitions for specifying the switching capacity

Rated switching capacity I

Prospective rms value of the short circuit current which an RCCB can make,

carry and break under defined conditions.

Rated switching capacity I

The rated switching capacity of an RCBO is the limit short-circuit breaking capacity

specified by the manufacturer.

Rated residual switching capacity I

Prospective rms value of the residual current which the residual current protective

device can make, carry and break under defined conditions.

Rated conditional short-circuit current I

Prospective current which the RCCB, protected by a short-circuit back-up fuse,

can withstand without suffering functional impairment.

Rated conditional residual short-circuit current I

Prospective residual current which the RCCB, protected by a short-circuit back-up

fuse, can withstand without suffering functional impairment.

of the RCCB (EN 61008-1)

of an RCBO (EN 61009-1)

(EN 61008-1, EN 61009-1)

Δm

(EN 61008-1)

Δc

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