Cut Sheet
SPECIFICATION SHEET
EW SERIES
7 DAY DIGITAL
TIME SWITCH
MULTIPURPOSE CONTROLS
1 OR 2 CHANNEL
APPLICATIONS
• Outdoor signs display
• Lighting security
• System heating &
air conditioning
FEATURES
SCHEDULING: 20 ON & OFF set points
for individual programs for each day of the
week. Minimum setting is 1 minute.
DAYLIGHT SAVING: Automatic
(can be omitted).
LEAP YEAR: Automatic Compensation
MANUAL OVERRIDE: Until the next
regularly scheduled ON or OFF, automatic
operation then resumes.
CLOCK FORMAT: AM/PM
POWER OUTAGE BACKUP: Permanent schedule
retention with memory module. Supercapacitor
provides 4 days of real time backup.
MOMENTARY OPTION: For mechanically held
contractors: Model EW201B only. Congure with simple
jumper change for single-channel momentary operation.
SPECIFICATIONS
TIMING ACCURACY: Line Frequency
INPUT VOLTAGE:
120-277VAC, 50/60Hz (automatic detection)
TERMINAL RANGE: #8 - #16AWG
OPERATING TEMPERATURE:
-40˚ to +149˚ (-40˚ to +65˚C)
POWER CONSUMPTION: 6VA Max.
ENCLOSURE: Indoor/Outdoor NEMA 3R
plastic is standard.
DIMENSIONS:
8
5
/16” x 5
1
/16” x 3
1
/16”
OTHER MOUNTINGS
Consult factory for other enclosure or
mounting options.
A DIVISION OF NSi INDUSTRIES, LLC
WIRING DIAGRAMS
3
SPST
4
LOAD
120/277VAC
EW101B
1 2
NLN
TIMER
SUPPLY
EW201B
momentary configuration
EW201B ONLY: UNIT MUST BE
CONFIGURED FOR MOMENTARY OPTION
CH 1
TIMER
SUPPLY
356
120/277VAC
PULSE ON PULSE OFF
4
LN
1 2
CH 1 CH 2
SPST SPST
TIMER
SUPPLY
120/277VAC
34 5
SPDT
EW120B
1 2
LN
LOAD LOAD
N N
DPST
TIMER
SUPPLY
356
120/277VAC
4
LLNNN
LOAD LOAD
LOAD
1 2
EW103B
DPST
TIMER
SUPPLY
356
208 OR 240VAC
4
L1 L2
1 2
3
SPST
4
LOAD
120/277VAC
EW101B
1 2
NLN
TIMER
SUPPLY
EW201B
momentary configuration
EW201B ONLY: UNIT MUST BE
CONFIGURED FOR MOMENTARY OPTION
CH 1
TIMER
SUPPLY
356
120/277VAC
PULSE ON PULSE OFF
4
LN
1 2
CH 1 CH 2
SPST SPST
TIMER
SUPPLY
120/277VAC
34 5
SPDT
EW120B
1 2
LN
LOAD LOAD
N N
DPST
TIMER
SUPPLY
356
120/277VAC
4
LLNNN
LOAD LOAD
LOAD
1 2
EW103B
DPST
TIMER
SUPPLY
356
208 OR 240VAC
4
L1 L2
1 2
3
SPST
4
LOAD
120/277VAC
EW101B
1 2
NLN
TIMER
SUPPLY
EW201B
momentary configuration
EW201B ONLY: UNIT MUST BE
CONFIGURED FOR MOMENTARY OPTION
CH 1
TIMER
SUPPLY
356
120/277VAC
PULSE ON PULSE OFF
4
LN
1 2
CH 1 CH 2
SPST SPST
TIMER
SUPPLY
120/277VAC
34 5
SPDT
EW120B
1 2
LN
LOAD LOAD
N N
DPST
TIMER
SUPPLY
356
120/277VAC
4
LLNNN
LOAD LOAD
LOAD
1 2
EW103B
DPST
TIMER
SUPPLY
356
208 OR 240VAC
4
L1 L2
1 2
3
SPST
4
LOAD
120/277VAC
EW101B
1 2
NLN
TIMER
SUPPLY
EW201B
momentary configuration
EW201B ONLY: UNIT MUST BE
CONFIGURED FOR MOMENTARY OPTION
CH 1
TIMER
SUPPLY
356
120/277VAC
PULSE ON PULSE OFF
4
LN
1 2
CH 1 CH 2
SPST SPST
TIMER
SUPPLY
120/277VAC
34 5
SPDT
EW120B
1 2
LN
LOAD LOAD
N N
DPST
TIMER
SUPPLY
356
120/277VAC
4
LLNNN
LOAD LOAD
LOAD
1 2
EW103B
DPST
TIMER
SUPPLY
356
208 OR 240VAC
4
L1 L2
1 2
CATALOG
NO.
UPC
CODE
INPUT SUPPLY
(VAC) 50/60Hz
NO. OF
CHANNELS
OUTPUT
DRY CONTACTS
EW101B 82431 120 - 277 1 SPST
EW103B 82441 120 - 277 1 DPST
EW120B 82436 120 - 277 1 SPDT
EW201B 82467 120 - 277 2 SPST
TYPE
EW101B, EW103B, EW201B EW120B
VOLTAGE
RATING
VOLTAGE
RATING
NO NO NC
General Purpose 120-277VAC 40A 120-277 VAC 30A 30A
Inductive 120-277VAC 40A 120-277 VAC 30A 30A
Ballast
120VAC 30A 120VAC 30A 10A
208-277VAC 20A 208-277VAC 20A 10A
Tungsten 120VAC 15A 120VAC 15A 2A
Pilot Duty 120-277VAC 720VA 120-277 VAC 720VA 720VA
Motor
120VAC 1HP 120VAC 1HP 1HP
208VAC 1 1/2HP 208VAC 1 1/2HP 1 1/2HP
240-277VAC 2HP 240-277VAC 2HP 2HP
Resistive 28VDC 30A 28 VDC 30A 30A