Specification

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Energy Controls
Diagrams
T7000B Series
T7400B Series 4PST
Equipment
Ground
Clock
Motor
Clock Motor
Supply
To Load(s)
A 1 2 3 4
B
5 6 7 8
Supply
T7800B Series 2NO/2NC
Equipment
Ground
Clock
Motor
Clock Motor
Supply
To Load(s)
A 1 2 3 4
5 6 7 8
Supply
B
The time switch shall be of the 7-Day dial type, capable of permitting three different ON/OFF programs for each day of
the week for a maximum of 21 ON/OFF operations a week. The time switch shall provide for minimum ON/OFF times of
3 ½ hours. Time switch shall be powered by ______________ (125)(208-277) VAC 60 Hz power supply. The time switch
motor shall be synchronous, which shall be designed to withstand a minimum of 6000 volt transients. The time switch
motor shall be connected to the supply terminals with ring-type connectors and shall not require more than _______ (3)(5)
watts to operate the time switch. The time switch mechanism shall be in a snap-in design to provide ease of mechanism
removal from the enclosure. The time switch enclosure shall be a _________ (Type-1)(Type-3R) lockable steel enclosure,
which, shall be painted with an electrostatic process to eliminate the potential for corrosion. The time switch
enclosure shall provide a minimum of 45 cubic inches of wiring space and shall provide a non-removable cover, which
shall swing open a full 180 degrees. The time switch shall provide clear terminal identication on a non-curling
terminal insulator. The time switch contact blades shall be a one piece design with welded silver alloy contacts and shall
be designed to provide wiping action on contacts during operation to ensure reliable load switching. Terminal
connections shall be made using teeter-type terminal screws to provide secure connections for wire sizes up to 8 AWG.
The time switch with sufx “C” shall include a spring wound carryover and shall maintain time control on schedule during
power failure for up to 16 hours. The time switch carryover shall automatically rewind upon power resumption.
Switch conguration shall be _______________ (4PST)(2NO/2NC) with an agency listed switch rating each pole:
• 40 Amp Resistive, 120-480 VAC
• 40 Amp Tungsten, Inductive, 120/208/240/277 VAC
• 1000 VA Pilot Duty, 120-277 VAC
• 2 HP (24 FLA, 144 LRA) 120 VAC
• 5 HP (28 FLA, 168 LRA) 240 VAC Single Phase
• 7
1
⁄2 HP (28 FLA, 168 LRA) 208 VAC
• 10 HP, (28 FLA, 168 LRA) 240 VAC, Three Phase
Time switch shall be agency listed under Clock Operated Switches and shall be Intermatic Model ________
(See Model Numbers Listed).