TRU Series - Knob Adjustable Universal Time Delay Relay

Littelfuse Multifunction Relays
The TRU Series is a multifunction, knob adjustable, Universal Time Delay Relay. It includes six of the most popular timing functions selected by a slide switch. The time delay is knob adjustable and the time delay range is switch selectable. The repeat accuracy is + 0.1%. Both function and time range can be selected on the top face of the unit. In addition to multifunctioning and multiple time ranges, the TRU Series features universal input voltage; 19 to 264VAC and 19 to 30VDC and full 10A output relay. The TRU Series can directly replace up to 1000 competitive time delay relay models.


Operation
A six position slide switch selects delay-on-make, interval, single shot, recycling (ON time first, Equal Recycle Delays), delay-on-break, and retriggerable single shot. 8-pin DPDT base wiring is limited to delay-on-make, interval, and recycling functions. All six functions are available in the 8-pin SPDT and 11-pin DPDT versions.

Access specifications, certifications, check availability and order parts below

Catalog #Input
Voltage (V)
Output
Form
Storage Temperature (F/C)Time Delay RangeSample capableCompare
TRU119 to 264VAC; 19 to 30VDCIsolated DPDT; 3 functions-40° to 85°C (-40°F to 185°F)0.1s - 1000m in 6 ranges: 0.1-10 1-100 or 10-1000s; 0.1-10 1-100 or 1000mNo
TRU219 to 264VAC; 19 to 30VDCIsolated SPDT-40° to 85°C (-40°F to 185°F)0.1s - 1000m in 6 ranges: 0.1-10 1-100 or 10-1000s; 0.1-10 1-100 or 1000mNo
TRU319 to 264VAC; 19 to 30VDCIsolated DPDT-40° to 85°C (-40°F to 185°F)0.1s - 1000m in 6 ranges: 0.1-10 1-100 or 10-1000s; 0.1-10 1-100 or 1000mNo