BS EN 61009-2-1 is an international standard that applies to residual current operated circuit-breakers with integral overcurrent protection (RCBOs) functionally independent of line voltage, for household and similar uses incorporating overcurrent protection having 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.
BS EN 61009-2-1 on RCBO rules of applicability is useful for:
Circuit breakers are powered by residual current and include built-in overcurrent safety (RCBOs). In a single device, RCBOs combines residual current and microcircuit breakers (RCBO). They safeguard humans from residual currents and systems from short-circuiting and overloading. RCBOs are preferable because they can guard against earth leakage currents, short circuits, and overcurrent. They can also protect against electric shocks and earth faults.
BS EN 61009-2-1 provides you with the characteristics of RCBOs, details on marking, and states the standard conditions for operation in service and for installation. BS EN 61009-2-1 addresses the requirements for construction and operation and guides you to conduct routine tests for performance analysis. Using BS EN 61009-2-1 guidelines ensures domestic safety and protection, prevention against hazards, and eases the process of domestic electrical installations.
IEC 61009-2-1:1991