This new type of heater is specially designed for all kinds of high/low voltage switchgear,electric control switchgear Technical ParameterRated voltage: AC220VPower frequency withstand voltage:>=2kV/1minInsulation resistance: cold state:>=100MΩ hot state:≥15MΩShell Temperature: ≤60°CEnviroment Temperature: -15°C~+50°CProtection class: Ip20Working pattern: long time continous workingOptional model ...