SSAC PRLB Series Data Sheet
PRLB SeriesTimer - Delay-on-Break
Connection:
The PRLB Series is designed for use on noncritical timing applications. It offers low cost, knob
adjustable timing control, full 10A relay output,
and onboard LED indication. The knob adjustment
provides a guaranteed time range of up to 10
minutes in 6 ranges. The onboard LED indicates
whether or not the unit is timing (ashing LED)
as well as the status of the output.
Operation (Delay-on-Break):
Input voltage must be applied at all times prior to and
during timing. Upon closure of the initiate switch, the
output contacts transfer and remain transferred if no
further action is taken. The LED is on steady. When the
initiate switch is opened, the time delay is started. The
LED ashes during timing. At the conclusion of the delay,
the output contacts revert to their original unenergized
position. Applying input voltage with the initiate switch
closed will energize the load.
Reset: Reclosing the initiate switch during timing resets
the time delay. Loss of input voltage resets the time delay
and output.
For more information see:
Appendix A, pages 156-164 for function descriptions
and diagrams.
Appendix B, page 165, Figure 9 for dimensional drawing.
Features:
• Onboard adjustable time delay relay
• Electronic circuit with electromechanical relay
• Popular AC & DC operating voltages
• Industry standard octal plug-in connection
• Time delays 0.05 - 600s in 6 ranges
• ±2% repeat accuracy
• ±10% factory calibration
• LED indication
• 10A, SPDT output contacts
Approvals:
Auxiliary Products:
• Panel mount kit: P/N: BZ1
• Hold-down clips (sold in pairs):
P / N : PS C8 ( N D S- 8)
• Octal 8-pin socket: P/N: NDS-8
• DIN rail: P/N: C103PM (Al)
Available Models:
PRLB422
PRLB425
If desired part number is not listed, please call us to
see if it is technically possible to build.
L1 N/L2
S1 = Initiate Switch
Relay contacts are isolated.
Order Table:
PRLB
X
Input Voltage
─1 - 12VDC
─2 - 24VAC
─3 - 24VDC
─4 - 120VAC
─5 - 110VDC
─6 - 230VAC
X
Adjustment
─1 - Factory Fixed
─2 - Adjustable
X
Time Delay*
─1 - 0.05 - 3s
─2 - 0.1 - 10s
─3 - 1 - 60s
─4 - 2 - 180s
─5 - 7 - 480s
─6 - 7 - 600s
*If xed delay is selected, insert
delay (0.05 - 600) in seconds.
Specications
Time Delay
Type .................................Analog circuitry
Range ................................0.05 - 600s in 6 adjustable ranges or xed
Repeat Accuracy ......................±2% or 20ms, whichever is greater
Tolerance .............................Knob adjust: guaranteed range
Fixed: ±10%
Reset Time ............................≤ 75ms
Recycle Time ..........................≤ 250ms
Time Delay vs Temp. & Voltage ..........≤ ±10%
Input
Voltage ...............................12, 24, or 110VDC; 24, 120, or 230VAC
Tolerance 12VDC & 24VDC/AC ....-15% - 20%
110 to 230VAC/DC ....-20% - 10%
AC Line Frequency ....................50/60 Hz
Power Consumption ...................≤ 2.25W
Output
Type .................................Electromechanical relay
Form .................................Isolated, SPDT
Rating ...............................10A resistive @ 28VDC; 10A resistive @ 240VAC;
1/3 hp @ 120 & 240VAC
Life ..................................Mechanical - 1x107; Electrical - 1x10
6
Protection
Surge ................................IEEE C62.41-1991 Level A
Isolation Voltage .......................≥ 1500V RMS input to output
Insulation Resistance ...................≥ 100 MΩ
Polarity ..............................DC units are reverse polarity protected
Indication
Type .................................LED
Operation ............................Output energized - on steady
Output energized & timing - ashing
Mechanical
Mounting ............................Plug-in socket
Dimensions ...........................3.62 x 2.39 x 1.78 in. (91.6 x 60.7 x 45.2 mm)
Termination ...........................Octal 8-pin plug-in
Environmental
Operating / Storage Temperature ........-20° to 65°C / -30° to 85°C
Weight ...............................≅ 6 oz (170 g)
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