Cutler Hammer, Div of Eaton Corp ECSTD Series Current Switch Catalog
CurrentWatch™ Current Sensors
1
ECSTD Series Current Switch
CA05311008E
August 2007
ECSTD Series Current Switch
CurrentWatch Current Sensors
Contents
Overview . . . . . . . . . . . . . . . . . . . . . 1
Model Selection,
Switches . . . . . . . . . . . . . . . . . . . . 2
Model Selection,
Accessories . . . . . . . . . . . . . . . . . . 3
Wiring Diagram . . . . . . . . . . . . . . . 3
Specifications . . . . . . . . . . . . . . . . . 4
Dimensions . . . . . . . . . . . . . . . . . . . 5
The CurrentWatch ECSTD Series
from Eaton’s electrical business is a
family of high performance currentoperated switches with fieldadjustable time delay to help minimize
nuisance trips during start-up and
operation. Designed for motor status
applications where setpoint accuracy
and repeatability are critical, the
ECSTD Series offers a linear setpoint
characteristic and constant hysteresis.
Standard features include selfpowering, jumper-selectable ranges
and a choice of outputs and housing
styles.
For typical applications of the CurrentWatch ECSTD Series, see listing to
the right.
Approvals
■
UL Listed
Pending
Unless otherwise noted, the
products contained in this
document are not designed
or intended for use in human
safety applications.
AC Current Switches with Time Delay
Field-Adjustable
Indicator LED Shows
Current Setpoint
Output Status
Split- and Solid-Core
Models, All Self-Powered
Product Features
Adjustable Start-Up/Delay Timer — Field adjustable from 0 – 15 seconds to
■
eliminate nuisance alarms due to start-up inrush or temporary overcurrent
conditions
Choice of N.O./N.C. AC or Universal Outputs — Contact ratings of 1.0A @
■
240V AC or universal outputs of 0.15A @ 240V AC/DC (N.O. models) and
0.2A @ 135V AC/DC (N.C. models) for use with most standard motor control
systems
■
Improved Ease of Installation and Use — Self-powered, split-core models
simplify installation, 1.0A AC rating eliminates need for time delay relay,
and status LED provides visual indication of setpoint trip and contact action
■
Industrial Grade Performance — Constant hysteresis and linear response
characteristics enhance setpoint accuracy
Agency Approved — UL Listed, CE pending
■
Typical Applications
Adjustable Start-Up/
Delay Timer
Built-In Mounting Tabs
■
Motor Protection — Serves as an electronic proof-of-operation; detects
current draw changes in motors when they encounter problems such as
pumps running dry or pending bearing failure; non-intrusive and less
expensive to install than differential pressure flow sensors or thermal
switches; much quicker response time than Class 10 overload relays
High Inrush or Temporary Overload Current — Adjustable start-up/delay
■
timer allows 0 – 15 second delay to eliminate nuisance trips from high
inrush or short overload conditions
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 .
For more information visit: www.eaton.com
CA05311008E
August 2007
Model Selection — CurrentWatch ECSTD Series
Power Supply Aperture Size Output Type Setpoint Options Catalog Number
AC Output Switches (N.O./N.C. 1A @ 240V AC)
Solid-Core Housings
Split-Core Housings
Self Powered (No
External Power Needed)
CurrentWatch™ Current Sensors
ECSTD Series Current Switch
0.75 in. (19 mm) Normally Open Adjustable Setpoints:
1.5 – 12, 12 – 55 or
50 – 175A
Normally Closed Adjustable Setpoints:
1.5 – 12, 12 – 55 or
50 – 175A
0.85 in. (21.6 mm) Normally Open Adjustable Setpoints:
2 – 12, 12– 55 or
50 – 200A
Normally Closed Adjustable Setpoints:
2 – 12, 12 – 55 or
50 – 200A
2
ECSTD401SC
ECSTD402SC
ECSTD404SP
ECSTD405SP
AC/DC Output Switches (N.O. 0.15A @ 240V AC/DC, N.C. 0.2A @ 135V AC/DC)
Solid-Core Housings
Split-Core Housings
Preferred for PLC inputs.
Stocked product, typical order quantities guaranteed in stock.
Self Powered (No
External Power Needed)
0.75 in. (19 mm) Normally Open Adjustable Setpoints:
0.85 in. (21.6 mm) Normally Open Adjustable Setpoints:
1.5 – 12, 12 – 55 or
50 – 175A
Normally Closed Adjustable Setpoints:
1.5 – 12, 12 – 55 or
50 – 175A
2 – 12, 12– 55 or
50 – 200A
Normally Closed Adjustable Setpoints:
2 – 12, 12 – 55 or
50 – 200A
ECSTD406SC
ECSTD407SC
ECSTD408SP
ECSTD409SP
CA05311008E For more information visit: www.eaton.com
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