Wenzhou Aolang Import & Export Co.,Ltd

O5SM1 residual current operated circuit-breaker with integral overcurrent protection can be used in the domestic and public field for otimu protection of life against the risks if in direct contacts and electrical installations against short-circuits or overload. The residual current operated circuit-breakers with integral overcurrent. Protection combine in fact a protection against earthing faults(differential protection) and a protection against overcurrents detected in the installations magnetothermic protection versions using a rated residual fault current of 30mA also assure an additional protection in case of direct contacts. O5SM1 series are equipped with overcurrent triggers integrated and manufactured according to the most recent national and international regulations: standards IEC1009-1 and IEC2318, their sizes are in compliance with the regulations of the standard DIN43880, one module is 18mm(1 pole), front window height equal to 45mm. According to IEC1009-1, FSM type of RCBO has no special operating process, so it can be used by laypeople.

Type	Rated current In(A) AC230/400V	Rated fault currents In(A)	Remarks
Modular Residual current operated circuit-breakers(RCCBs)-MM
O5SM1		10, 30, 100 300, 500	For AC fault currents for AC, pulsating DC fault currents
Modular Residual current operated Circuit-breakers(RCCBs)-MM/KZ for special applications
O5SM1		300, 1000 30, 300 30, 100	Selective type for AC, pulsating and smooth DC fault currents Timed opening (short time delay), for enhanced protection against unwanted tripping actions