© 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