Nws yog electro-mechanical nyob rau hauv cov xwm.Qhov tseem ceeb ntawm no yog tias:
1. nws tuaj yeem xaim hauv ob qho tib si.
2.Nws tau ua raws li IEC 61009-2-1 (qhov tseem ceeb voltage ywj siab RCBO), Nws yog nrog electro-mechanical tso tawm uas ua haujlwm zoo txawm tias tsis muaj qhov hluav taws xob lossis kab hluav taws xob qis dua 50V.
3.Type -A: Tiv thaiv cov ntaub ntawv tshwj xeeb ntawm residual pulsating DC uas tsis tau smoothed.
4.Muaj kev tiv thaiv lub ntiaj teb txhaum/kawg tam sim no, luv-circuit, overload, thiab muaj nuj nqi ntawm kev rho tawm.
5. Muab kev tiv thaiv ntxiv tiv thaiv kev sib cuag ncaj qha los ntawm tib neeg lub cev Ua tau zoo tiv thaiv cov khoom siv hluav taws xob tiv thaiv tsis ua haujlwm.
6.Muaj kev tiv thaiv zoo rau tsev neeg thiab kev lag luam kev faib khoom.
7.high tawg peev xwm mus txog 10ka.more ruaj ntseg.