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An OFF Position is available in place of one contact position. Add the
suffix X to catalog number. Eight total switch positions, OFF included,
is the maximum on molded base.
Increased Operating Voltage to 800 volts
Increased to 1200 volts
45 or 90
All switches are supplied with straight clips and rotor strap as standard. To
obtain 45 degree or 90 degree clips and rotor strap, add the suffix -45
or -90 to the catalog number.
A single pole, double throw 15 amp at 480VAC auxiliary switch actuated
by the rotary tap switch mechanism is available for remote indication pur-
poses. Add the suffix -S to the catalog number.
Provides a separate spring loaded handle which must be withdrawn to permit
operation on main handle of switch to the next tap position. Actuation of
the mechanical release operates an auxiliary switch (SPDT - 15 amp at
480VAC) which can be wired into the control circuit to assure the tap
switch is operated in a NO-LOAD condition. To obtain mechanical release
option, add the suffix -MR to the catalog number.
Key Interlock Provision
Provisions can be provided for customer addition of a Type F, 1-inch bolt-
projection when withdrawn, 3/4-inch travel, Key Interlock to prevent
unauthorized switch operation on all types of switches. Add the suffix
-L to the catalog number
Standard switches are supplied with numbers. We can supply letters, different numbers, etc.
Type S1, single phase, are supplied with pistol grip handles. Type T2 & T3, tandem 2 or 3
phase switches, are supplied with T Handles. Type S1 could be supplied with T Handle,
low profile. Type T2 & T3 could be supplied with pistol grip handle.
All switches are supplied with straight clips and rotor straps as standard. We can supply
straight clips and angled rotor strap.
Increased Operating Voltage
Standard switches are rated 600 volt. We can supply 1200, 2400, 4160, 4800, etc.
There are no designated codes for special optional features other than -Z. Special features
must be written on purchase order.
Switches can be supplied with:
More than one Auxiliary Switch
More than one Key Interlock Provision
Combination of Mechanical Release with Key Interlock, Mechanical Release with extra
Auxiliary Switches, etc. To obtain these options, add suffix -MR, -2S, -2L, etc.
In addition, our switches feature manual operators or motor operators. Standard motor opera-
tors are uni-directional controlled. Reversing control is available.
The basic design of Heavy-Duty Rotary Tap Switches lends itself to numerous special modifica-
tions and arrangements; increased operating voltages, series/parallel switching, wye-delta
switching, generator winding controls, high frequency switching, motor reversing, polarity
Consult the factory for your particular application. Our staff
of engineering and marketing specialists are at your service.