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KRPSA22B

P1-P2
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/
Rev: 1-A-062216
Time Delay Relays
Dedicated - Delay-on-Make
www.littelfuse.com/krps
KRPS SERIES
Description
The KRPS Series is a factory programmed time delay relay
available with 1 of 15 functions and measures only 2 inches
square. The KRPS offers a wide range of fixed, onboard, or
externally adjustable time delays. The output relay contacts
offer a full 10A rating with complete isolation. Its microcontroller
timing circuit provides excellent repeat accuracy and stability.
Encapsulation protects against shock, vibration, and humidity.
The KRPS Series is a cost effective approach for OEM
applications that require small size, isolation, accuracy, and long
life. Special time ranges and functions are available.
Features & Benefits
FEATURES BENEFITS
Microcontroller based Repeat Accuracy + / - 0.5%
Compact design Allows flexiblility for OEM applications
Isolated, SPDT,
10A output
Allows control of loads for AC or DC voltages
Encapsulated
Encapsulated to protect against shock, vibration,
and humidity
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
L1 N/L2
V = Voltage
C = Common, Transfer Contact
NC = Normally Closed
NO = Normally Open
S1 = Initiate Switch
UTL = Untimed Load
A knob is supplied for adjustable
units, or RT terminals 4 & 5 for
external adjust. See external
adjustment vs. time delay chart.
The untimed load is optional. S1
is not used for some functions.
Wiring Diagram
Ordering Information
MODEL INPUT VOLTAGE ADJUST.
TIME
DELAY
FUNCTION
KRPS4160MM 120VAC Fixed 60m Delay-on-Make
KRPS913MB 230VAC Fixed 3m Delay-on-Break
KRPSA10.1SFT 24 - 240VAC/DC Fixed 0.1s Alternating
KRPSA21RE 24 - 240VAC/DC Onboard 0.1 - 10s
Recycling,
On Time First
KRPSA22B 24 - 240VAC/DC Onboard 1 - 100s Delay-on-Break
KRPSA24M 24 - 240VAC/DC Onboard 0.1 - 10m Delay-on-Make
KRPSD10.1SF 12 to 48VDC Fixed 0.1s
Leading Edge
Flip-Flop
KRPSD21B 12 to 48VDC Onboard 0.1 - 10s Delay-on-Break
KRPSD21M 12 to 48VDC Onboard 0.1 - 10s Delay-on-Make
KRPSD22M 12 to 48VDC Onboard 1 - 100s Delay-on-Make
KRPSD22S 12 to 48VDC Onboard 1 - 100s Single Shot
KRPSD25S 12 to 48VDC Onboard 1 - 100m Single Shot
If you don’t find the part you need, call us for a custom product 800-843-8848
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/
Rev: 1-A-062216
Time Delay Relays
Dedicated - Delay-on-Make
www.littelfuse.com/krps
Specifications
Time Delay
Type Microcontroller circuitry
Range 0.1s - 1000h in 9 adjustable ranges or fixed
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ≤ ±2%
Reset Time ≤ 150ms
Initiate Time ≤ 40ms; ≤ 750 operations per minute
Time Delay vs Temp.
& Voltage ≤ ±2%
Input
Voltage 12 to 48VDC; 24 to 240VAC/DC
Tolerance
12 to 48VDC -15% - 20%
24 to 240VAC/DC -20% - 10%
AC Line Frequency/DC Ripple 50/60Hz / ≤ 10%
Power Consumption AC ≤ 2VA; DC ≤ 2W
Output
Type Isolated relay contacts
Form SPDT
Rating (at 40°C) 10A resistive @ 125VAC
5A resistive @ 230VAC & 28VDC
1/4 hp @ 125VAC
Max. Switching Voltage 250VAC
Life (Operations) Mechanical - 1 x 10
7
; Electrical - 1 x 10
5
KRPS SERIES
Timer Functions
Operation (Delay-on-Make)
Upon application of the input voltage, the dime delay begins. The
output relay is de-energized before and during the time delay.
At the end of the time delay, the put energizes and remains
energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Operation (Delay-on-Break)
Input voltage must be applied before and during timing. Upon
closure of the initiate switch, the output relay energizes. The
time delay begins when the initiate switch is opened. The output
remains energized during timing. At the end of the time delay,
the output de-energizes. The output will energize if the initiate
switch is closed when input voltage is applied.
Reset: Re-closing the initiate switch during timing resets the time
delay. Removing input voltage resets the time delay and output.
Operation (Recycling)
Upon application of input voltage, the output relay energizes and
the ON time begins. At the end of the ON time, the output de-
energizes and the OFF time begins. At the end of the OFF time,
the output energizes and the cycle repeats as long as input
voltage is applied.
Reset: Removing input voltage resets the output and time
delays, and returns the sequence to the first delay.
DELAY- ON-MAKE (ON-DELAY)
V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
DELAY-ON-BREAK (OFF-DELAY)
V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
Protection
Circuitry Encapsulated
Isolation Voltage ≥ 1500V RMS input to output
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mechanical
Mounting Surface mt. with one #10 (M5 x 0.8) screw
Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”);
D 30.7 mm (1.21”)
Termination 0.25 in. (6.35 mm) male quick connects
Environmental
Operating/Storage
Temperature -40° to 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.6 oz (74 g)
Output Current/Ambient Temperature
RECYCLING (ON FIRST)
V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD1, TD2 = Time Delay
R = Reset
P1-P2

KRPSA22B

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Manufacturer:
Littelfuse
Description:
Time Delay & Timing Relays PROGRAMMABLETIMER
Lifecycle:
New from this manufacturer.
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