Intermatic ET1705C Owner's Manual

Intermatic Misc Electronics Owner's Manual - ET1705C.
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Electronic 7-Day 

Time Switch

Time Switch

• InputVoltage:120/208/240/277VAC,50/60Hz
• PowerConsumption:6.0wattsmax.
• ContactConfiguration:SPST(ET1705C),DPST(ET1725C),and

SPDT(ET1715C).Seewiringdiagramsonnextpage.

Switch Ratings—ET1705C, ET1725C (per pole)

• 30AInductive/Resistive:24/120/208/240VAC,60Hz
• 20ABallast:120-277VAC,60Hz
• 20AResistive:28VDC
• 5ATungsten:120/240VAC,60Hz
• 1HP:120VAC,60Hz
• 2HP:240VAC,60Hz

Switch Ratings—ET1715C (NO/NC) Normally Open/Normally Closed Contact

• 20A/10AInductive/Resistive:120/208/240VAC,60Hz
• 20A/3ABallast:120-277VAC,60Hz
• 5A:120/240VACTungsten
• 1HP/¼HP:120VAC,60Hz
• 2HP/½HP:240VAC,60Hz

Set Points (Events)—EachloadoutputoftheTimeSwitchcansupportup
to14timedONand14timedOFFeventsperday.
Battery-Powered Clock Operation—2yearsminimum(uses2AAA
industrialgradealkalinebatteries,supplied)
Minimum ON or OFF time—1minute
Maximum ON or OFF time—6days,23hours,59minutes
Shipping Weight—2.5lb.(1.1kg)
Enclosures—Threeenclosureoptionsareavailable.

• ET17x5C–NEMA1indoormetalenclosure
• ET17x5CR–NEMA3Rindoor/outdoorlockablemetalenclosure
• ET17x5CPD82–NEMA3Rindoor/outdoorlockableimpactresis-

tantpolycarbonateenclosurewithclearcover

Knockouts—Combination1/2-3/4inchsize,1onbackandeachside,
2onbottom
Wire Size—AWG#10through#18

Installation and User Instructions

MODEL ET1700 Series

TheIntermaticET1700SeriesElectronic7-DayTimeSwitchauto-
maticallyswitchesloadstoapresetweeklyschedulewithto-the-
minuteaccuracy.
Theindependent7-dayprogrammingprovidescompleteflexibility
forapplicationswhereloadswitchingdifferseachdayoftheweek.
UsetheET1700seriesasanON/OFFtimerinapplicationsrequir-
ing7-dayloadcontrolsuchaslighting,airconditioningsystems,
pumps,etc.EachloadoutputoftheTimeSwitchcansupportupto
14timedONand14timedOFFeventsperday.Theprogramcan
beoverriddenbypushingtheON/OFFloadoverridebutton(s).
TheET1700SeriesTimeSwitchisdesignedtodirectlyswitchtung-
stenorballastloadsuptoitsrating,andinductiveorresistiveloads
upto30Aat120,208,240,or277VAC.

Specifications

With Battery 

Carryover

Description

WARNING: Disconnect the 
power to the Time Switch 
and the loads before instal-
lation.
1.  Remove the mechanism  

 

from the case by de- 

 

pressing the catch at the  

 

top of the case and pull 

 

ing out, as shown.

 

CAUTION: Do not 

 

touch circuit board 

 

components since 

 

static discharge could damage the microprocessor. 

2.  Set voltage selector for desired input voltage. 

 

The timer is shipped with voltage set for 120 

 

VAC. To operate at 208, 240 or 277 VAC, move 

 

the selector switch to the desired setting as 

 

marked on the circuit board. See location A in 

 

Rear View

 above and detail at the right.

3.  The timer is shipped with DST (Daylight Saving 

 

Time) enabled. To disable DST, insert a jumper 

 

at location marked DST. See location B in Rear 

 View

 above and detail at the right.

4.  ET1725C ONLY

—Decide whether you want to 

 

control multiple loads simultaneously (SIM), 

 

independently (IND), or with a 2-second pulse 

 

(PUL) (e.g., for use with mechanically held 

 

contactors or bell ringing applications), and make 

 

sure the jumper is positioned accordingly. See location B in Rear 

 View

 above and detail at the right. (The unit is shipped with the 

 

loads set for IND.)

Installation Instructions

Slide down

to remove 

battery case

Snap out catch

Tilt top forward

Front View

Rear View

B

A

• Electrical shock hazard. To avoid fire, shock, or death, disconnect all 

power before installing or servicing time switch or connected loads.

• Follow local electrical and safety codes, National Electric Code (NEC) 

and Occupational Safety and Health Act Codes (OSHA).

• If the power disconnect point is out of sight, lock it in the OFF position 

and tag it to prevent unexpected application of power.

• This time switch must be grounded.
• Do not exceed maximum current carrying capacity.
• Always replace the plastic insulator covering the terminal before 

powering ON.

   WARNING–Risk of Fire or Electric Shock

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