© 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