Independent power supply with build-in power source,directly draws power from the incoming end to avoid the risk of protection function failure caused by external power supply failure.
● Overload protection
● Short circuit protection
● Isolation
● Controlling
● Used in residential building, non-residential building, industry, energy and infrastructure
Instruction of type code
Technical specifications
Selection and ordering data
3SM18
3SM18 with enclosure
3SM18-2-AV Under-voltage release
3SM18-2-AS Shunt release
Selection and ordering data
3SM18-2-AN11 Auxiliary contact
3SM18-2-AD Auxiliary Alarm
Enclosure
Tripping Curve
Average operating times at 20 ºC related to multiples of the setting current
1: 3 poles from cold state; 2: 2 poles from cold state; 3: 3 poles from hot state
Outline and installation dimensions
