Cutler Hammer, Div of Eaton Corp ECS Series Current Switch Catalog

Switches Are
Self-Powered

Easy Setup and
Mounting

Adjustable Setpoint
Models Available

Split-Core Housing for
Quick Installation

Visual LED Indicator

August 2007

ECS Series Current Switch
CurrentWatch Current Sensors

Contents

Overview . . . . . . . . . . . . . . . . . . . . 1

Model Selection, Switches . . . . . . 2

Model Selection, Accessories . . . 3

Wiring Diagram . . . . . . . . . . . . . . . 3

Specifications . . . . . . . . . . . . . . . . 3

Dimensions . . . . . . . . . . . . . . . . . . 4

The CurrentWatch ECS Series from
Eaton’s electrical business is a family
of solid-state adjustable current
switches, ideal for providing status
information on electrical equip­ment. The ECS is excellent for new
installations, where the conductors
run through the housing, requiring no
cutting. These switches are also ideal
for retrofits, since split-core models
can be opened to fit around existing
conductors. The current switch is
accurate, reliable and easy to install.

The ECS can sense continuous cur­rents from 1 to 150A and does not
require any supply voltage, as the
power required is induced from the
monitored conductor. The output is a
non-polarity-sensitive solid-state con­tact for switching AC and DC circuits
up to 240V AC/DC. This switch also
includes an LED indicating two states:
on and below trip point, and above
trip point with contacts energized. All
ECS Series switches carry an uncondi­tional five-year warranty.

Any change in current can be sensed
with the ECS Series. A change in cur­rent may indicate motor failure, belt
loss/slippage or mechanical failure.
Any of these events can cause the
current to drop significantly, tripping
the switch and notifying the controller.

Approvals

■

UL and C-UL Listed

CurrentWatch™ Current Sensors
ECS Series Current Switch

CA05311006E

AC Current Switches for Detecting Overcurrent Condition

Product Features

Universal Outputs — N.O. or N.C. solid-state switch for control circuits up

■

to 240V AC/DC, compatible with most automation systems

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Self-Powered — Cuts installation and operating costs
Easily Adjustable Setpoint — Increases application flexibly and speeds

■

start-up

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Solid- or Split-Core Housings — Versions tailored for each type of installation
LED Indication — Provides quick visual indication of contact status

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Built-In Mounting Feet — Simple, two-screw panel mount or attach with

■

optional DIN-rail mounting kit accessory

Typical Applications

Electronic Proof of Flow — Current operated switches eliminate the need

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for multiple pipe or duct penetrations and are more reliable than electro­mechanical pressure or flow switches

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Conveyors — Detect jams and overloads
Lighting Circuits — Easier to install and more accurate than photocells

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Fans, Pumps and Heating Elements — Faster response than temperature

sensors

Critical Motors

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Ancillary Equipment

1

Unless otherwise noted, the
products contained in this
document are not designed
or intended for use in human
safety applications.

CA05311006E For more information visit:

For Customer Service in the U.S. call 1-877-ETN CARE (386-2273) ,

in Canada call 1-800-268-3578 .

For Application Assistance in the U.S. and Canada

call 1-800-426-9184 .

www.eaton.com

CurrentWatch™ Current Sensors

2

ECS Series Current Switch

Example Application — CurrentWatch ECS Series

Pump Jam & Suction Loss Protection

August 2007

PLC

Motor

Control

Signal

Motor
Starter

B/I Card

Digital

Input

Current Switch

Model Selection — CurrentWatch ECS Series

Power Supply Aperture Size Output Signal Setpoint and LED Configuration Catalog Number

Top Terminal Current Switch

Solid-Core Housings

Self Powered (No
External Power Needed)

Overload Setpoint

AMPS

Normal Operation

0.74 in. (19 mm) Normally Open Adjustable 1 – 150A Setpoint

Jam

Motor

Off

Tim e

with LED

Fixed 1.0A Setpoint No LED ECSNOFSC

Normally Closed Adjustable 1 – 150A Setpoint

with LED

Fixed 1.0A Setpoint No LED ECSNCFSC

ECSNOASC

ECSNCASC

Split-Core Housings

Stocked product, typical order quantities guaranteed in stock.

0.85 in. (21.6 mm) Normally Open Adjustable 1.75 – 150A
Setpoint with LED

Fixed 1.5A Setpoint
No LED

Normally Closed Adjustable 1.75 – 150A

Setpoint with LED

Fixed 1.5A Setpoint
No LED

ECSNOASP

ECSNOFSP

ECSNCASP

ECSNCFSP

For more information visit: www.eaton.com

CA05311006E