... manufacturer of explosion-proof electrical appliance Lower price BZC51-Series explosion-proof operation postApplicationsCan be used in zone 1 ... and zone 20, zone 21, zone 22 flammable dust atmospheres.Temperature class: T1~T6Indoor or outdoor (IP54, IP65*, IP66* ... static, stainless steel exposed fixed parts and shell.Built-in indicator lamp, button, transfer switch, ammeter, voltmeter, frequency meter, ...