HB Series
Single Pole Standard Precision Snap-acting Switches
Features/Benefits Typical Applications
Low differential travel, high repeatability Thermostats
Long life150,000 cycles typical Motors
Single and double pole circuitry Industrial controls
Sealed actuator and case
Specifications Materials
CONTACT RATING: From low level* to 20 AMPS @ 480 V AC;
SWITCH HOUSING: Heat resistant/electrical grade phenolic.
see ELECTRICAL RATING option section for complete listings.
INSERTS: Brass alloy.
ELECTRICAL LIFE: 150,000 cycles at 20 AMPS @ 250 V AC.
ACTUATOR BUTTON: Moisture resistant phenolic.
consult Customer Service Center for typical life at other ratings.
SPRING: Copper alloy.
INSULATION RESISTANCE: 1,000 M ohm min.
PIVOT: Brass alloy.
DIELECTRIC STRENGTH: 1,500 Vrms min. @ sea level.
MOVABLE CONTACTS: Gold alloy for ratings 1 AMP or less.
OPERATING TEMPERATURE: 67F to 302F (55C to 150C).
Fine silver for ratings greater than 1 AMP and motor load
OPERATING FORCE: From 4 oz. to 26 oz. max. at actuator ratings less than 1/2 HP @ 125 V AC. Silver alloy for motor
button available.
load ratings 1/2 HP @ 125 V AC or greater.
MOUNTING SCREWS: Torque 3 in/lbs max. STATIONARY CONTACTS: Gold alloy for ratings 1 AMP or less.
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(Note: Exceeding 3 in/lbs torque may change operating Fine silver welded to copper base for ratings greater than
characteristics and increase the possibility of cracking
1 AMP and motor load ratings less than 1/2 HP @ 125 V AC.
switch case). Silver alloy on copper base for motor load ratings 1/2 HP @
125 V AC or greater.
TERMINAL SCREWS: Torque 4 in/lbs max.
TERMINALS: Brass alloy, bright tin plated.
PANEL MOUNTING BUSHING: Torque 4-6 in/lbs max.
DEGREE OF PROTECTION: IP65; Dust-proof, water splash and
NOTE: Specifications and materials listed above are for switches with standard options.
dew condensation.
For information on specific and custom switches, consult Customer Service Center.
* Low Level=conditions where no arcing occurs during switching, i.e., 0.4 VA max. @
20 V AC or DC max.
Build-A-Switch
To order, simply select desired option from each category and place in the appropriate box. Available options are shown and
described on pages J-50 thru J-54. For additional options not shown in catalog, consult Customer Service Center.
H B S S C
Series
HB Precision Snap-acting Switches
Operating Force
KG 18 oz./510 grams
Mounting Style Circuitry
Function
GF 4 oz./113 grams
S Standard C SPDT
S SP
KA 9 oz./255 grams
Contact Separation
KC 13 oz./368 grams
2 .020"
KH 20 oz./567 grams
1 .010"
PB 26 oz./737 grams
4 .040"
7 .070"
Electrical Rating
B4 20 A, 125, 250, 480 V AC;
Actuator
0.25 A, 250 V DC; 0.5 A, 125 V DC
P0 Pin plunger
A2 5 A, 125, 250 V AC
A0 Lever roller
Terminations
B6 20 A, 125, 250, 480 V AC; 0.25 A,
D0 Stub plunger
11 Flat base, solder, 4-40 screws
250 V DC; 0.5 A, 125 V DC; 3/4 HP,
F0 Reverse acting lever roller 41 Flat base, .250" quick connect
125 V AC; 1 1/2 HP, 25O V AC
J0 High overtravel plunger
55 Step base, cup washers, 6-32 screws
F5 1 A,125 V AC; 1 A, 3O V DC
R5 Perpendicular roller plunger
F9 22 A, 125, 277 V AC; 15 A, 480 V AC;
T0 Lever
1/4 HP, 125 V AC; 1/2 HP, 250 V AC
TS Sealed Lever
Y0 Reverse acting lever
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
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Snap-actingSnap-acting
HB Series
Single Pole Standard Precision Snap-acting Switches
Sealed Actuator and Case
To provide reliable service under environmental conditions that might damage standard precision switches, various HB Series
switch models are sealed against the entrance of airborne contaminants and/or splashing liquids. The clearance between
the operating plunger and the cover is sealed with a silicone boot and the base cover joint is sealed with an epoxy adhesive.
These models are designed to meet requirements of IP65 (dust proof, water splash and dew condensation). For additional
information on sealed switches, consult our Customer Service Center.
SERIES
HB PRECISION SNAP-ACTING SWITCHES
FUNCTION
S SINGLE POLE SWITCH
OPER. POS.
.625 .015
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(15,88 0,38)
Single Pole
NOTE: To select switching function, see CIRCUITRY section, page J-52.
CONTACT SEPARATION
DIFFERENTIAL TRAVEL SPECIFICATION LIMITS
.0004
OPTION NOMINAL CONTACT
FOR VARIOUS CONTACT SEPARATIONS
CODE SEPARATION (in./mm)
.0002
INCH
.020
2 CONTACT
Switches with 1 AMP rating (option
(0,51)
0 .001 .002 .003 .004 .005
SEPARATION
code F5) are available only with
.010
.020 contact separation (option 2).
1
1
(0,25)
Switches with 1/2 HP, 125 V AC rating
.040
or greater (option codes B5 and B6)
2
4
(1,02)
are not available with .010 contact
separation (option code 1).
4
.070
7
(1,78)
7
.0015
Dimensions are shown: Inch (mm)
Specifications and dimensions subject to change
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