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FAQ

Q1.  What is a Double Pole Double Throw (DPDT) relay?

A.   DPDT relay is a type of relay with two discrete sets of moving contacts. Each set includes a normally closed (NC) contact and a normally open (NO) contact.

 

Q2.  What is the benefit of using a DPDT relay?

A.   DPDT relays are the most popular and convenient type of relay. The 2 sets of contacts provide the option to choose either NC or NO configuration for a circuit when the relay is energized or de-energized.

 

Q3.  How does a DPDT relay work?

A. When the double throw relay is at rest, the NO contacts are open, and the NC contacts are closed. When voltage is applied to the coil, both sets of contacts change positions – the NC contacts open, and the NO contacts close. 

 

Q4.   How are DPDT relays different from SPST and SPDT relays?

 A. The main difference is that Single Pole Single Throw (SPST) and Single Pole Double Throw (SPDT) relays have only one set of contacts instead of two.

 

Features

Please review product documents or contact us for the latest agency approval information.  

Product Type Features

  • Relay & Contactor Type  General Purpose Signal Relay

Configuration Features

  • Contact Arrangement  2 Form C DPDT-CO

Electrical Characteristics

  • Coil Resistance (Ω) 44, 56, 140, 210, 650, 1350, 2245

  • Contact Switching Voltage (Max) (VDC) 28

  • Contact Current Rating (A) 2

  • Coil Voltage Rating (VDC) 5, 6, 9, 12, 18, 26.5, 36

  • Coil Power Rating DC (W) .498, .52, .568, .577, .578, .579, .642, .643, .673, .686

Body Features

  • Enclosure Type  Hermetically Sealed

Termination Features

  • Main Termination & Connection Type  Solder Hook Terminals, Solder Pins

  • Coil Termination & Connection Type  Solder Hook Terminals, Solder Pins

Mechanical Attachment

  • Product Mount Type  Board Mount, Chassis Mount, Panel & Printed Circuit Board, Panel Mount, Plain Case

Usage Conditions

  • Operating Temperature Range (°C) -65 – 125

  • Environmental Ambient Temperature (Max)  125 °C [ 257 °F ]

Operation/Application

  • Vibration Resistance  30G's, 10 – 3000Hz

  • Shock Resistance  100G's, 11ms, 75G's, 6ms

  • Current Type  DC

  • Coil Magnetic System  Non-Polarized, Monostable

Reference Number

  • TE Internal Number CAT-3SBC-DPDT-WOCS

Related Materials

Datasheets & Catalog Pages