Littelfuse ASTUA3, ASQU / ASTU Series, 24-240VAC, Programmable (Multi-Function) Time Delay Relay SPST-NO (1 Form A) 0.1 Sec ~ 100 Min Delay DIN Rail
Regular price
$261.69
Pickup available at 220 Alden Road
Usually ready in 24 hours
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The ASQU and ASTU Series of 17.5 mm, knob adjustable, universal solid-state timers offer multiple functions, voltages, and time delay ranges. Choose one of 5 functions and 4 time delay ranges via 4 selection switches located on face of the unit. Adjustment through the time range is accomplished by an onboard knob.
The ASQU Series has quick connect terminals and the ASTU Series has terminal blocks.
*For CE approved applications, power must be removed from the unit when a switch position is changed.
Specifications
| Time Delay | |
| Type | Microcontroller based with ceramic resonator and watchdog circuitry |
| Adjustment | Knob with dial; 2 switches select 1 of 4 multipliers |
| Range* | 0.1 - 10s, 1 - 100s, 10 - 1000s, 1 - 100m |
| Repeat Accuracy | ±1% or ±50ms, whicheer is greater |
| Tolerance (Factory Calibration) | ±2% or ±50ms, whichever is greater |
| Reset Time | ≤ 300ms |
| Initiate Time | Single Shot & Delay-on-Break: ≤ 32ms |
| Time Delay vs Temp. & Voltage | ±2%, or ±50ms, whichever is greater |
| Input | |
| Voltage |
AC: 24 to 240VAC; -20% - 10% DC: 9 to 110VDC; -0% - 20% @ -25°C 9.4 to 110VDC; -0% - 20% @ -40°C |
| AC Line Frequency/DC Ripple | 50/60Hz / ≤ 10% |
| Output | |
| Type | Solid state |
| Form | NO |
| Rating | 0.7A steady state, 10A inrush |
| Voltage Drop | AC ≅ 2.5V @ 0.7A; DC ≅ 1.5V @ 0.7A |
| Protection | |
| Surge | IEEE C62.41-1991 Level A |
| Circuitry | Encapsulated |
| Dielectric Breakdown | ≥ 2000V RMS terminals to mounting surface |
| Polarity | DC units are reverse polarity protected |
| Mechanical | |
| Mounting | Two base adaptors are available |
| DIN Rail | Snap on to 32 mm DIN 1 & 35 mm DIN 3 rail |
| Surface | Two #6 (M3.5 x 0.6) screws or quick mount fasteners |
| Dimensions |
H 76.2 mm (3.0”) W 17.52 mm (0.69”) D 61.2 mm (2.41”) |
| Termination | |
| ASQU | 0.25 in. (6.35 mm) male quick connect terminals |
| ASTU | 0.197 in. (5 mm) push-on terminal blocks for up to #14 AWG (2.5 mm2 ) wire |
| Environmental | |
| Operating/Storage Temperature | 40° to 60°C / -40° to 85°C |
| Humidity | 95% relative, non-condensing |
| Weight | ≅ 4 oz (113 g) |
