IEC 61009-1:2006 Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs) - Part 1: General rules
This International Standard applies to residual current operated circuit-breakers with integral overcurrent protection functionally independent of, or functionally dependent on, line voltage for household and similar uses (hereafter referred to as RCBOs), for rated voltages not exceeding 440 V a.c., rated currents not exceeding 125 A and rated short-circuit capacities not exceeding 25 000 A for operation at 50 Hz or 60 Hz.
These devices are intended to protect people against indirect contact, the exposed conductive parts of the installation being connected to an appropriate earth electrode and to protect against overcurrents the wiring installations of buildings and similar applications. They may be used to provide protection against fire hazards due to a persistent earth fault current, without the operation of the overcurrent protective device.
RCBOs having a rated residual operating current not exceeding 30 mA are also used as a
means for additional protection in the case of failure of the protective means against electric shock.
This standard applies to devices performing simultaneously the function of detection of the residual current, of comparison of the value of this current with the residual operating value and of opening of the protected circuit when the residual current exceeds this value, and also of performing the function of making, carrying and breaking overcurrents under specified
conditions.
The content of the present standard related to protection against overcurrents is based on IEC 60898.
RCBOs of the general type are resistant to unwanted tripping, including the case where surge voltages (as a result of switching transients or induced by lightning) cause loading currents in the installation without occurrence of flashover.
RCBOs of the S type are considered to be sufficiently proof against unwanted tripping even if the surge voltage causes a flashover and a follow-on current occurs.
RCBOs are suitable for isolation.
Special precautions (e.g. lightning arresters) may be necessary when excessive overvoltages are likely to occur on the supply side (for example in the case of supply through overhead
lines) (see IEC 60364-4-443).
This standard also applies to RCBOs obtained by the assembly of an adaptable residual
current device with a circuit-breaker. The mechanical assembly shall be effected in the factory by the manufacturer, or on site, in which case the requirements of annex G shall apply. It also applies to RCBOs having more than one rated current, provided that the means for changing from one discrete rating to another is not accessible in normal service and that the rating cannot be changed without the use of a tool.
Supplementary requirements may be necessary for RCBOs of the plug-in type.
Particular requirements are necessary for RCBOs incorporated in or intended only for
association with plugs and socket-outlets or with appliance couplers for household and similar general purposes.
This standard does not apply to:
– RCBOs intended to protect motors,
– RCBOs the current setting of which is adjustable by means accessible to the user in
normal service.
The requirements of this standard apply for normal environmental conditions (see 7.1).
Additional requirements may be necessary for RCBOs used in locations having severe
environmental conditions.
RCBOs including batteries are not covered by this standard.
A guide for the co-ordination of RCBOs with fuses is given in annex F.
IEC 61009-1:2006 history
2014IEC 61009-1:2010/AMD2:2013/COR1:2014 Corrigendum 1 - Amendment 2 - Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs) - Part 1: General rules
2013IEC 61009-1:2010/AMD2:2013 Amendment 2 - Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs) - Part 1: General rules
2013IEC 61009-1:2013 Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs) - Part 1: General rules
2012IEC 61009-1:2010/AMD1:2012/COR1:2012 Corrigendum 1 - Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs) - Part 1: General rules
2012IEC 61009-1:2012 Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs) - Part 1: General rules
2010IEC 61009-1:2010 Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs) - Part 1: General rules
1970IEC 61009-1:1996/AMD2:2006 Amendment 2 - Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs) - Part 1: General rules
2006IEC 61009-1:2006 Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs) - Part 1: General rules
1970IEC 61009-1:1996/COR1:2003 Corrigendum 1 - Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs) - Part 1: General rules
2003IEC 61009-1:2003 Interrupteurs automatiques à courant différentiel résiduel avec protection contre les surintensités incorporée pour installations domestiques et analogues (DD) – Partie 1: Règles générales (Edition 2.1; Consolidated Reprint; Amendment 2: 04/2006)
1970IEC 61009-1:1996/AMD1:2002 Amendment 1 - Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs) - Part 1: General rules
1996IEC 61009-1:1996 Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs) - Part 1: General rules
1970IEC 61009-1:1991/AMD1:1995 Amendment 1 - Electrical accessories - Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBO's) - Part 1: General rules.
1991IEC 61009-1:1991 Residual Current Operated Circuit-Breakers with Integral Overcurrent Protection for Household and Similar Uses (RCBO's) Part 1: General Rules First Edition; (CENE EN 61009-1:1994) (Amendment 1-1995) (Edition 1.0)