The heavy-duty HT800 Series is a family of 30.5 mm
pushbutton devices that includes momentary, illuminated
and mushroomhead pushbuttons, selector switches,
indicating lights and push-pull units. The HT800 devices
have a familiar appearance found in most industrial
applications and are suitable for replacement of several
other manufacturers’ 30.5 mm devices.
• Pilot-duty UL Type A600
rated contact blocks handle
inductive loads up to 0.35
power factor (PF) compared
to general-purpose ratings that
have only a 0.75 PF rating
• Contact blocks have clear
transparent housings to
allow easy visual inspection
of contacts
• Contact blocks are color coded
(white for NO and black for
NC) to permit easy identifica-
tion and troubleshooting
• Movable contacts in contact
blocks have a “reliability” ridge
to ensure solid electrical
contact under a variety
of electrical conditions
• Logic level contact blocks
have gold-plated contacts
to ensure circuit integrity
down to 1 mA @ 5V
• Extended height bulbs
provide side illumination
of illuminated pushbuttons
and indicating lights
• Contact blocks mount side-
by-side and are stackable;
they can be mounted in left
and right positions or rotated
to mount in upper and lower
positions. This flexibility per-
mits correct positioning and
alignment of the terminals to
line up with existing wires in
retrofit applications
• Bright and long-lasting LEDs
are available in six colors
• Selector switches can be
converted from 2-position to
3-position and vice versa by
rotating the internal cams—
a nice option to have on
the job site
• Knob and lever assemblies
can be rotated every
22.5 degrees to suit
various panel layouts
The logical choice for value,
durability and reliability
Unlike their closest competitor,
the HT800 devices are all ULT
(NEMAT) Type 4X rated for resis-
tance to corrosion. In addition,
all HT800 devices are shipped
complete with grounding hard-
ware to ensure compliance with
electrical installation require-
ments. With most competitive
devices, grounding kits have to
be purchased separately.
Rugged metal construction,
handsome appearance, extra
features and competitive prices
make the HT800 Series the
logical choice for OEMs and
panel builders looking for value,
durability and reliability.
Features
• Die-cast metal housings
create robust and heavy-duty
devices that can endure
repetitive and heavy-handed
use in industrial environments
• Anodized aluminum mounting
rings are corrosion-resistant and
are UL (NEMA) Type 4X rated
• Double-V gaskets and O-rings
seal operators against contam-
inants to maintain dust-tight,
watertight and oil-tight panel
ratings (UL Type 4, 12 and
13 rated)
HT800 30.5 mm pilot devices
Product range
Momentary pushbuttons
• Flush, extended and 40 mm
diameter mushroomhead type
• Black, red or green
Illuminated pushbuttons
• With or without
protective guards
• Incandescent or LED
• Full voltage or transformer type
• 24V or 120V
• Red, green, amber, clear,
white, yellow and blue
Indicating lights
• Standard or PresTest type
• Incandescent or LED
• Full voltage or
transformer type
• 24V or 120V
• Red, green, amber, clear,
white, yellow and blue
Push-pull units
• Two-position maintained
• Mushroomhead type (40 mm)
• Black, red or green
Illuminated push-pull units
• Two-position maintained
• Mushroomhead type (40 mm)
• Incandescent or LED
• Full voltage or
transformer type
• 24V or 120V
• Red or green
Selector switches
• Knob or lever type
• Maintained and
spring-return versions
• Two, three and four positions
• Non-illuminated
• Black
Technical specifications and data
Mechanical Ratings
Description Specification
Frequency of Operation
Pushbuttons 6000 operations per hour
Selector switches 3000 operations per hour
Push-pull operators 3000 operations per hour
Mechanical Endurance/Life
Pushbuttons 10 x 106 operations 6K Ops/Hr six—NO on left and six—NC on right
Selector switches 250 x 10 three operations 3K Ops/Hr two—NO on left and two—NC on right
Push-pull operators 250 x 10 three operations 3K Ops/Hr six—NO on left and six—NC on right
Climatic Conditions
Operating temperature 10° to 140°F (–12° to 60°C)
Storage temperature –40° to 176°F (–40° to 80°C)
Altitude 6562 ft. (2999m)
Humidity 95% RH @ 60°C
Terminals
Contact blocks #6-32 posi-drive saddle damp type, 1x16 AWG to 2x15 AWG 12 in-lb max
Light units #6-32 posi-drive saddle damp type, 1x22 AWG to 2x14 AWG 7 in-lb max
Electrical Ratings—HT800 Standard Contact Blocks, UL Rating
Description/Function Contact Type Catalog
Number AC DC
Standard normally open contact NO HT8A A600 1P600 2
Standard normally closed contact NC HT8B A600 1P600 2
Normally open early make contact will make circuit before
standard NO contact. DC ratings do not apply. NOEM HT8C A600 1 ———
Normally closed late break contact will open after
standard NC contact. DC ratings do not apply NCLB HT8D A600 1———
Logic level, low voltage NO contact gold-plated contacts NO HT8E 5V 1 mA (minimum)
28V 500 mA (maximum)
A Heavy-duty.
2 Standard-duty.
UL A600 and P600 Ratings
Description
Vac 50 or 60 Hz Vdc 1
120 240 480 600 125 250 600
Make and emergency interrupting capacity (amperes) 60 30 15 12 1.1 0.55 0.2
Normal load break (amperes) 6 3 1.5 1.2 1.1 0.55 0.2
Thermal current (amperes) 10 10 10 10 5 5 5
Volt-amperes:
Make and emergency interrupting capacity 7200 7200 7200 7200 138 2138 2138 2
Normal load break 720 720 720 720 138 138 138
A DC ratings do not apply to NOEM (Normally Open Early Make) and NCLB (Normally Closed Late Break)
contact blocks HT8C and HT8D.
B Maximum make or break volt-amperes at 300V or less.
Eaton Corporation
Electrical Sector
1111 Superior Ave.
Cleveland, OH 44114
United States
877-ETN-CARE (877-386-2273)
Eaton.com
© 2010 Eaton Corporation
All Rights Reserved
Printed in USA
Publication No. PA04725001E / Z10357
December 2010
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