Intermatic T7401B Supplementary Manual
MODEL: T7401B
SEVEN-DAY DIAL TIME SWITCH
4 POLE SINGLE THROW
MINIMUM “ON” TIME 3-1/2 HR. UP TO 3-1/2 DAILY ON-OFF OPERATIONS
CONTACT RATINGS:
40 AMP. RESISTIVE EACH POLE 120V- 480V AC.
40 AMP. INDUCTIVE, TUNGSTEN EACH POLE 120V, 208V, 240V, OR
277V AC. 1000 VA PILOT DUTY EACH POLE 120V - 277V AC.
24 FLA, 144 LRA (2 HP) - 120V AC.; 28 FLA, 168 LRA (5 HP) - 240V AC.
SINGLE PHASE
28 FLA, 168 LRA (7 1/2 HP) -208V AC., (10 HP) -240V AC. 3 PHASE
CLOCK MOTOR: 125 VOLTS - 60 HZ.
FOR REPLACEMENT MOTOR, ORDER WG1600
WIRING INSTRUCTIONS
This Time Switch can be wired to control one to four circuits simultaneously on a seven
day schedule. Clock motor voltage may be other than load voltage, but must be as
specified. For terminal markings, internal wiring and contact arrangements refer to wiring dia-
gram above. Use solid or stranded COPPER
only wire with insulation to suit installation.
See table for gauge selection. To make power connections remove 1/2 inch of insulation from
wire ends. Insert bare ends of wire under the pressure plate of terminals. Use 3/16 or larger
screw driver to tighten terminal screws firmly.
REPLACE FRONT INSULATOR BEFORE
TURNING ON ELECTRICITY.
PROGRAMMING INSTRUCTIONS
1.
TO SET “ON” TIMES, place bright ON trippers against edge of CLOCK-DIAL at
day-of-week and time-of-day when
“ON” operations are desired. Tighten tripper
screws securely.
2.
TO SET “OFF” TIMES, place dark OFF trippers against edge of CLOCK-DIAL at
times when
“OFF” operations are desired. Tighten tripper screws securely.
3.
TO SKIP DAYS, omit trippers for the day(s) automatic operations is/are not required.
4.
TO SET DIAL TO TIME-OF-DAY, turn dial CLOCKWISE and align the exact day-of-
week and time-of-day (AM or PM) on dial with the
TIME POINTER. Some allowance
may be required to compensate for gear backlash.
CAUTION: DO NOT MOVE POINTER OR FORCE DIAL COUNTERCLOCKWISE.
OPERATING INSTRUCTIONS
• TO OPERATE SWITCH MANUALLY: Move MANUAL LEVER below CLOCK-DIAL
left or right as indicated by arrows. This will not affect next automatic operation.
• IN CASE OF POWER FAILURE OR TO ADVANCE/RETARD TIME: Reset time-of-
day, see step 4 of programming instructions.
DISCONNECT ELECTRICITY BEFORE ANY BEHIND-THE-INSULATOR WORK.
INTERMATIC INCORPORATED
SPRING GROVE, ILLINOIS 60081-9698
158TS10978
PRESSURE PLATE
TERMINAL SCREW
MAKE SURE WIRE
INSULATION CLEARS
PRESSURE PLATE
MINIMUM
COPPER
WIRE SIZE
(AWG)
MAX.
LOAD
(AMP)
MIN.
INSUL-
ATION
TEMP(°C)
75°C INSULATION MAX. MOTOR
LOAD (HP)
SINGLE PHASE
3 PHASE
120 V.
240 V.
208 V.
240 V.
14
12
10
8
15
20
30
40
60
60
60
75
1/2
1
2
-
2
2 1/2
3
5
120 V
60 HZ
TO
LOADS
SUPPLY
WIRING DIAGRAM
GROUND
SCREW
3
4
5
7 1/2
3
5
7 1/2
10
CLOCK
MOTOR
2
1
A
3
4
5 6
7
8
B
LR3730
158TS10978 8/6/04 10:37 AM Page 1