How do DPDT relays work?
DPDT stands for double pole double throw relay. Relay is an electromagnetic device used to separate two circuits electrically and connect them magnetically. They are often used to interface an electronic circuit, which works at a low voltage to an electrical circuit which works at a high voltage.
What is a double pole double throw contactor?
Double Pole Double Throw relays supply two single double through relays, SPDT, in one relay package. This combination provides tremendous design flexibility. Dual circuit functions can be controlled with a single coil signal.
How does a SPDT relay work?
The SPDT Relay(30A) is a high quality Single Pole Double Throw Relay(SPDT). The Relay consists of a coil, 1 common terminal, 1 normally closed terminal, and one normally open terminal. When the coil of the relay is at rest (not energized), the common terminal and the normally closed terminal have continuity.
What is the function of DPDT?
How does DPDT Switch Works? DPDT or Double pole, double throw switches will break or make the two conductors connected to two separate circuits. In this switch, DP switches control two independent circuits whereas DT switches close a circuit in the up & down position.
What are the different types of contactor?
There are different types of contacts in a contactor, and they are; auxiliary contact, power contact, and contact spring. The power contact has two types that are; stationary and movable contact.
What is the difference between SPST and SPDT relay?
SPST simply mean single pole, single throw. The product controls one circuit with one On position. SPDT means that it is a single pole double throw which means it has two ON positions.
Does a VFD require a contactor?
No, Contactors are not required for the line or load side of a “Variable Frequency Drive”.
What is a DPDT relay used for?
The DPDT relay (Double Pole Double Throw) is quite interesting and can be used in various scenarious, including for changing the direction of a motor as you can see in the picture below. It has 2 terminals and 4 connectors and you can look at the DPDT relay as the equivalent of 2 Single Pole Double Throw SPDT relays.
What kind of coil does a 200A contactor come with?
Your 200A contactor comes with a 12V, 24V, 48V, 60V, 72V, 96V or 120V DC Coil. A bracket and screws are included with the contactor. Multiples of this contactor can be used in series for higher voltage battery packs.
What are auxiliary contacts used for in a high voltage relay?
Since the contacts are mechanically linked in many applications one of the contact sets are used as auxiliary contacts to provide circuit feedback indicating relay contact position. As with our other High Voltage Relays GIGAVAC offers several design styles of vacuum and gas filled High Voltage Relays.