Maximal depth 12m TENV Totaly Enclosed, Non VentilatedCertified for inverter duty application 25Hz to 60Hz Duty cycle S1 to S10 Thermal overload protection with PTC Insulation class H Standard arrangements by the IEC 34-7, EN 60 034-7, IM B3, IM B5 Modular construction Cast iron Stainless steel name plate