single-pole double-throw


Also found in: Acronyms.

single-pole double-throw

[′siŋ·gəl ′pōl ′dəb·əl ′thrō]
(electricity)
A three-terminal switch or relay contact arrangement that connects one terminal to either of two other terminals. Abbreviated SPDT.
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References in periodicals archive ?
The 1260-160B is a one-slot plug-in with 2 single-pole double-throw (SPDT) relays, and the 1260-160E is a two-slot plug-in with 5 SPDT relays.
The 1260-121A/B is a 12-channel, single-pole double-throw (SPDT) switch plug-in ideal for use in any application requiring high-current switching, such as solenoid or actuator control and power supply signal routing and control.
Both are comprised of 17 channels of Single-Pole Double-Throw (SPDT) switches and are capable of switching up to 30 V.
Comprised of 20 discrete 1x1 Single-Pole Single-Throw (SPST) relays and 2 discrete 1x2 Single-Pole Double-Throw (SPDT) relays, Racal's uniquely designed switch cards bring flexibility to ATE users.
Based on the popular 1260-16 design, the new Model 1260-116 is a 24-channel, Form C, Single-Pole Double-Throw (SPDT) switch card ideal for general purpose switching and control of external devices.
Each RF Cell Pack eliminates the need for multiple discrete devices required to perform specific functions such as wide band amplifier, mixer, attenuator, and single-pole double-throw (SPDT) switch.
The new switches include the AWS5505, transfer switch with a single-pole double-throw (SPDT), AWS5507and AWS5512, transfer switches (TRSS), and AWS5508, single-pole four-throw (SP4T).

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