The TSD7 Series utilizes only two terminals connected in series with the load. Interval timing mode period is achieved by using a small portion of the AC sine wave allowing sufficient voltage for circuit operation. It can be used as an interval timer to control or pulse shape the operation of contactors, solenoids, relays, and lamp loads. The TSD7 Series can be wired to delay on the break of a switch for energy saving fan delays. Operation (Interval) Upon application of input voltage, the output energizes and the time delay begins. The output remains energized throughout the time delay. At the end of the time delay, the output de-energizes and remains de-energized until power is removed. Reset: Removing input voltage resets the time delay and the output.
Off-Delay Time Delay Relay SPST-NO (1 Form A) 1 Sec ~ 100 Sec Delay Chassis Mount
Off-Delay Time Delay Relay SPST-NO (1 Form A) 1 Sec ~ 100 Sec Delay Chassis Mount
| Littelfuse, Inc. | DigiKey | Quarktwin Technology Ltd. | |
|---|---|---|---|
| Product Category | Time Delay Relays | Time Delay Relays | Time Delay Relays |
| Product Number | TSD7421 | 5666-TSD7421-ND | TSD7421 |
| Product Name | Relays, Contactors & Transformers - Single-Function & Control Relays - Time-Delay Relays - Interval - Series: TSD7 Interval Timers - TSD7421 | Time Delay Relays | Time Delay Relays |
| Mounting | Surface mount with 1 #10 (M5 x 0.8) screw | Chassis Mount | Chassis Mount |
| Operating Temperature | -40 to 167 F (-40 to 75 C) | ||
| Minimum | 1 to 100 seconds | 1 seconds | |
| Switch Type | SolidState | ||
| Contact Configuration | Normally Open (NO) | Normally Open (NO) | Normally Open (NO) |
