Ship overcurrent relays are used to protect sensitive equipment against over or under current conditions. By using current transformers (CTs), these protective relays monitor large... Read more
Manufacturers supply mechanical latching modules that should be fitted with either control relays or contactors. The resulting devices are called mechanically held relays.Once the... Read more
The mechanical interlock is assembled between two contactors to prevent them from simultaneously closing and is often used as an added safety feature to electrically interlocked co... Read more
These are used as an accessory for large contactors and are connected through control circuits where they are used for monitoring purposes. Side-mounted contact reference numbers,... Read more
A contactor is used to switch larger amounts of electrical power through circuit contacts of 10 amps or higher. Contacts, carrying such a load are called ‘Main Contacts... Read more
When preparing a ship spares order, the reference numbers or letters should not be ignored, particularly If the requested type of relay is not available from the supplier and anoth... Read more
The modular system is formed around basic units, Which are equipped with additional functions by means of modules. In addition to basic unit contacts, top-mounted auxiliary contact... Read more
The contacts of electromechanical devices on ship electrical system are utilized through control circuitry only are unlikely to sustain currents higher than 10 Amps. They are calle... Read more
Electromechanical relays can be expensive, large, take longer to work than modern semiconductors and have a finite contact life, particularly for large power contactor relays on bi... Read more
A reed relay consists of a reed switch, ie a sealed glass capsule containing two separated overlapping ferromagnetic reeds. A typical reed switch capsule. The capsule is surrounded... Read more
