Schneider Electric WHT55 Surface Mount Triple Pole Isolating Switch is a type of electrical switch used in industrial and commercial applications. The switch has three separate conductors or sets of contacts that can be opened or closed simultaneously. An isolating switch is designed to isolate a circuit for maintenance or repair purposes. 

55A is the current carrying capacity of the switch. It can handle a maximum current of 55 amperes. 440V is the maximum voltage that the switch is designed to handle. IP66 is an Ingress Protection (IP) rating. An IP66 rating means the switch is "dust-tight" and protected against powerful water jets.

In summary, Schneider Electric WHT55 Surface Mount Triple Pole Isolating Switch is designed for heavy-duty applications where it's necessary to disconnect a high-current electrical circuit safely. Its IP66 rating indicates it can be used in environments where it may be exposed to dust and water.

Features

• IP66 rating
• 1P / 2P /3P Isolators
• High level of protection against dust and water
• It is a triple-pole switch