1.TN TYPE :excellent latching equipment,ample current flow capability, two coil method
FRAME SIZE : 100~400A
POLE:3P,4P
2.MSN TYPE :low frquent defective by grounding failure protection,improved grounding effect, low accident by phase difernece,rare overcurrent or arc,error signal
FRAME SIZE : 600~4000A,
POLE:3P,4P