Schneider Electric WHD55 Surface Mount Double Pole Isolating Switch is used to disconnect or isolate a circuit from its power source. The switch is designed to be mounted directly onto a surface, as opposed to being recessed into a wall or enclosure. The switch has two separate sets of contacts, which means there are two independent switches within the same unit.

Each switch can control a separate circuit. Isolating Switch is a device used to ensure that electrical equipment can be isolated from the supply for maintenance purposes. It provides a visible means of breaking an electrical circuit. 55A is the amperage rating of the switch. 440V is the maximum voltage the switch is designed to handle. IP66 is an Ingress Protection (IP) rating, which means the switch is dust-tight and protected against powerful jets of water.

In summary, the Schneider Electric WHD55 Surface Mount Double Pole Isolating Switch is a switch that can handle up to 55 amperes of current at a maximum voltage of 440 volts. It's designed to be mounted on a surface and is equipped with two independent switches. It also has a high level of protection against dust and water. 

Features

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