1. moving together type (H-type) coil is not energized "220V Cooling Fan" Two contacts are disconnected, the power, the two contacts is closed. To co-word phonetic prefix "H" represents.
2. moving off type (D-type) coil is not energized "220V Cooling Fan" two contacts are closed, the two contacts after power is disconnected. With hyphenation spelling prefix "D" represents.
3. Conversion type (Z type) This is the contact group type. This contact group consisted of three contacts, namely the middle is moving contact, up and down a stationary contact. When "220V Cooling Fan" coil is not energized, the movable and stationary contact one another off and closed, the coil is energized, the movable contacts to move into a closed off so that the original, the original closed to disconnect state, to achieve the purpose of conversion. Such a contact group called changeover contacts. With the "turn" the word phonetic prefix "z" represents