© 2016 Littelfuse Protection Relays & Controls

Protection Relays

Current Monitoring Relays and Transducers

www.littelfuse.com/cp5

Rev: 1-A-062716

CP5 SERIES

Single-phase current monitor

Wiring Diagram

Description

The CP5 Series are undercurrent monitors designed to monitor

one leg of a 3-phase system. It is commonly used as a tower

monitor on center pivot irrigation systems to detect stalled or

jammed towers to prevent over watering.

The CP5 Series has both an adjustable trip level and an

adjustable trip delay timer. When the current is sensed, the CP5

Series activates its output relay, thus starting the motor/pump.

When the current in the monitored power line falls below the

user-selectable trip point, the unit goes through a trip delay timer

and then deactivates the output relay if the monitored current

does not recover first.

Features & Benefits

FEATURES

BENEFITS

Adjustable trip

level (0-5A)

Provides ability to precisely set the current trip point

for any application

Adjustable trip

delay (0-10m)

Prevents nuisance tripping due to power

line fluctuations

600V rated relay

contacts available

on CP-5-460 model

Eliminates the need for a control transformer to step

voltage down to 120 - 240V for a control circuit

Specifications

Input Characteristics

Nominal Input Voltage

CP5115

115VAC

CP5460

460VAC

Frequency

50*/60Hz

Functional Characteristics

Operating Points

Trip Level

0-5 Amps

Trip Delay

0-10 minutes

Restart

1 second

Output Characteristics

Output Contact Rating (SPDT)

Pilot Duty

CP5115

480VA @ 240VAC

CP5460

470VA @ 600VAC

General Characteristics

Terminal

Torque

7 in.-lbs.

Wire Size

12-18AWG

Safety Marks

UL

UL508 (File #E68520)

Dimensions

H 74.4 mm (2.93”); W 133.9 mm (5.27”);

D 74.9 mm (2.95”)

Weight

1 lb. (16 oz., 453.59 g)

Mounting Method

#8 screws

*Note: 50Hz will increase all delay timers by 20%

Ordering Information

MODEL

LINE VOLTAGE

CP5115

115VAC

CP5460

460VAC