ELECTRICAL Switches & Plugs 9
SWITCHES — TOGGLE
DEFINITIONS Lamp Load -- The amount of current (amperes) demanded or required by one or more lamp filaments for illumination. Inductive Load -- The amount of current (amperes) demanded or required by any device having an integral wire wound coil with a steel core that produces a magnetic force, e.g., operation of motors and solenoids. Poles and Throws The letters SPST , SPDT , DPST , or DPDT describe what the switch is capable of doing. SP Single Pole -- A switch device that opens, closes or changes connection in a single conductor of an electrical circuit. DP DoublePole -- A switch device that opens, closes or changes connection in two conductors of an electrical circuit. ST Single Throw -- A switch that opens, closes or completes a circuit at only one of the extreme positions of its actuator. DT DoubleThrow -- A switch that opens, closes or completes a circuit at both extreme positions of its actuator. An SPST (single pole, single throw) switch has one closed contact position (ON) and turns on one circuit -- the basic OFF-ON switch. A DPST (double pole, single throw) switch has two closed contact positions energizing two circuits at the same time. The circuits must be from separate sources. Because it is single throw, it has one ON position, an OFF-ON switch. An SPDT (single pole, double throw) switch has one closed contact position at one time. Because it is double throw, it can turn on two different circuits from one source, but not at the same time. It could be an ON-OFF-ON switch or an ON-ON switch. A DPDT (double pole, double throw) switch has two closed contact positions energizing two separate circuits at the same time. Because it is double throw it has two ON positions, an ON-OFF-ON or ON-ON switch.
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TOGGLE SWITCHES — HEAVY DUTY
Cole Hersee Part No.
Center Position Function
Down Position Function
Number of Terminals
Pollak Part No.
Part No.
Type Up Position Function
Conservative Electrical Ratings 12V (DC) - 25 amps, lamp load 12V (dc) - 35 amps, inductive load
2 Screw ***
H77.0.1 H77.0.2 H77.1.1 H77.1.2 H77.1.3 H77.1.4 H77.1.5 H77.1.6 H77.1.7.0 H77.1.8 H77.1.10 H77.1.11 H77.1.12 H77.1.13 H77.1.15 H77.1.16 H77.1.20 H77.1.25 H77.1.26 H77.1.27 H77.1.28 H77.1.29 H77.1.31
SPST ON SPST ON SPST ON SPST ON SPST ON SPDT ON SPDT ON SPDT ON SPDT ON SPDT ON DPST ON DPST ON DPDT ON DPDT ON DPDT ON
OFF OFF OFF OFF OFF ON
34-500 33-300 34-571 34-579
2 Screw 2 Screw 2 Blade 2 Blade 2 Blade 3 Screw 3 Screw 3 Screw 3 Blade 3 Screw 3 Blade 3 Blade 2 Screw 4 Screw 4 Blade 6 Screw 6 Screw 6 Blade 6 Blade 6 Screw 6 Screw 6 Blade
125V (AC) - 15 amps 250V (AC) - 10 amps
5582
MOM. OFF
55052-01
34-571Q 55014 34-570Q 55037
mom. = momentary
SPST MOM. ON
34-572 34-596 34-575
5584
MOM. ON MOM. ON
55088 55021
• Plastic housing with plated steel cap. • Nickel plated brass stem and mounting hardware. • Mounting stem 15/32”-32 thd. 15/32” (11.90mm) long with keyway. • Nickle plated brass handles, 11/16” (17.46mm) long, except for 777.1.2 which has a 1 - 1/2” handle • Fits panels up to 1/4” (6.35mm) thick. • Silver contacts for dependable electrical operations.
SPDT MOM. ON OFF
OFF
ON ON ON
34-572Q 55015
34-573
5586
OFF
34-573Q 55016 34-575Q 55033-01
SPDT MOM. ON OFF
MOM. ON
SPST MOM. ON
OFF OFF OFF ON ON ON ON
34-570 34-574 34-576 34-577
55020 5588
34-574Q 55017
5590 5592
OFF OFF
34-577Q 55019 34-578Q 55018
DPDT MOM. ON OFF DPDT MOM. ON OFF DPDT MOM. ON OFF DPDT MOM. ON OFF
MOM. ON
34-580 34-578
55054
ON
55054-04
MOM. ON
34-580Q 55065-03
**Comes with mounting bracket
***Light-Duty (10 AMPS @12 Volts)
Conservative Electrical Ratings 12V (DC) - 25 amps, lamp load 12V (dc) - 35 amps, inductive load
TOGGLE SWITCHES — NYLON HANDLE
125V (AC) - 20 amps 250V (AC) - 10 amps
Cole Hersee Part No.
Center Position Function
Down Position Function
Number of Terminals
Pollak Part No.
Part No.
Type Up Position Function
mom. = momentary
H77.3.10 H77.3.35
SPST ON
2 Blade 3 Blade
34-581Q 54100-01 34-582Q 54101-01
• O-Ring seal between toggle and bushing • Durable nylon housing • Brass contacts
SPDT MOM. ON OFF
MOM. ON
TOGGLE SWITCH — X-TRA HEAVY DUTY
Up Position Function
Center Position Function
Down Position Function
Number of Terminals
Part No.
Type
H77.50.1 H77.50.2 H77.50.3 H77.01.1 H77.01.8
SPST SPST SPST SPST SPDT
ON ON ON ON
OFF OFF OFF
2 screw 2 blade 3 screw * 2 Screw * 3 Screw *
ON OFF
• Chrome plated handle • 15/32” Dia. x 7/16” long mounting stem • 50 Amp rated, 6-24 Volt
MOM. ON
OFF
MOM. ON
*1.5” Long Handle
WEATHER RESISTANT TOGGLE SWITCH H77.1.01 • Weather resistant plastic coating with O-Ring in stem. • On-Off, S.P.S.T., Rated 20 amps, 12 VDC • Knurled face nut, hex back nut & 2 - 8” leads • Chrome plated bat handle, mounting stem 15/32” Dia., 3/8” long.
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