HB Series
Single Pole Standard Precision Snap-acting Switches
Features/Benefits
•
Low differential travel, high repeatability
•
Long life—150,000 cycles typical
•
Single and double pole circuitry
•
Sealed actuator and case
Typical Applications
•
Thermostats
•
Motors
•
Industrial controls
Specifications
CONTACT RATING: From low level* to 20 AMPS @ 480 V AC;
see ELECTRICAL RATING option section for complete listings.
ELECTRICAL LIFE: 150,000 cycles at 20 AMPS @ 250 V AC.
consult Customer Service Center for typical life at other ratings.
INSULATION RESISTANCE: 1,000 M ohm min.
DIELECTRIC STRENGTH: 1,500 Vrms min. @ sea level.
OPERATING TEMPERATURE: –67ºF to 302ºF (–55ºC to 150ºC).
OPERATING FORCE: From 4 oz. to 26 oz. max. at actuator
button available.
MOUNTING SCREWS: Torque 3 in/lbs max.
(Note: Exceeding 3 in/lbs torque may change operating
characteristics and increase the possibility of cracking
switch case).
TERMINAL SCREWS: Torque 4 in/lbs max.
PANEL MOUNTING BUSHING: Torque 4-6 in/lbs max.
DEGREE OF PROTECTION: IP65; Dust-proof, water splash and
dew condensation.
* Low Level=conditions where no arcing occurs during switching, i.e., 0.4 VA max. @
20 V AC or DC max.
Materials
SWITCH HOUSING: Heat resistant/electrical grade phenolic.
INSERTS: Brass alloy.
ACTUATOR BUTTON: Moisture resistant phenolic.
SPRING: Copper alloy.
PIVOT: Brass alloy.
MOVABLE CONTACTS: Gold alloy for ratings 1 AMP or less.
Fine silver for ratings greater than 1 AMP and motor load
ratings less than 1/2 HP @ 125 V AC. Silver alloy for motor
load ratings 1/2 HP @ 125 V AC or greater.
STATIONARY CONTACTS: Gold alloy for ratings 1 AMP or less.
Fine silver welded to copper base for ratings greater than
1 AMP and motor load ratings less than 1/2 HP @ 125 V AC.
Silver alloy on copper base for motor load ratings 1/2 HP @
125 V AC or greater.
TERMINALS: Brass alloy, bright tin plated.
NOTE:
Specifications and materials listed above are for switches with standard options.
For information on specific and custom switches, consult Customer Service Center.
J
Snap-acting
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
Series
HB
Precision Snap-acting Switches
Function
S
SP
S
Operating Force
KG
18 oz./510 grams
GF
4 oz./113 grams
KA
9 oz./255 grams
KC
13 oz./368 grams
KH
20 oz./567 grams
PB
26 oz./737 grams
S
C
Contact Separation
2
.020"
1
.010"
4
.040"
7
.070"
Electrical Rating
B4
20 A, 125, 250, 480 V AC;
0.25 A, 250 V DC; 0.5 A, 125 V DC
A2
5 A, 125, 250 V AC
B6
20 A, 125, 250, 480 V AC; 0.25 A,
250 V DC; 0.5 A, 125 V DC; 3/4 HP,
125 V AC; 1 1/2 HP, 25O V AC
F5
1 A,125 V AC; 1 A, 3O V DC
F9
22 A, 125, 277 V AC; 15 A, 480 V AC;
1/4 HP, 125 V AC; 1/2 HP, 250 V AC
Mounting Style
S
Standard
Circuitry
C
SPDT
Actuator
P0
Pin plunger
A0
Lever roller
D0
Stub plunger
F0
Reverse acting lever roller
J0
High overtravel plunger
R5
Perpendicular roller plunger
T0
Lever
TS
Sealed Lever
Y0
Reverse acting lever
Terminations
11
Flat base, solder, 4-40 screws
41
Flat base, .250" quick connect
55
Step base, cup washers, 6-32 screws
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
J–50
www.ck-components.com
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
(15,88 ± 0,38)
J
Snap-acting
Single Pole
NOTE:
To select switching function, see CIRCUITRY section, page J-52.
CONTACT SEPARATION
OPTION
CODE
NOMINAL CONTACT
SEPARATION (in./mm)
.020
(0,51)
.010
(0,25)
.040
(1,02)
.070
(1,78)
Switches with 1 AMP rating (option
code ‘F5’) are available only with
.020 contact separation (option ‘2’).
Switches with 1/2 HP, 125 V AC rating
or greater (option codes ‘B5 and B6’)
are not available with .010 contact
separation (option code ‘1’).
.0004
.0002
CONTACT
SEPARATION 0
1
2
4
7
.0015
DIFFERENTIAL TRAVEL SPECIFICATION LIMITS
FOR VARIOUS CONTACT SEPARATIONS
INCH
2
1
4
7
.001
.002
.003
.004
.005
Dimensions are shown: Inch (mm)
Specifications and dimensions subject to change
J–51
www.ck-components.com
HB Series
Single Pole Standard Precision Snap-acting Switches
OPERATING FORCE
OPTION
CODE
MAXIMUM OPERATING
FORCE (OZ./GRAMS)
18
510
4
115
9
255
13
370
20
570
26
740
STANDARD CONTACT
SEPARATION (inch)
.020
.010
.010
.040
CONTACT
SEPARATION
.010
.020
OPERATING FORCE SPECIFICATION LIMITS
FOR VARIOUS CONTACT SEPARATIONS
OUNCES
4
7
9
13 14
18 20
26
30
KG
GF
KA
KC
KH
PB
.020
.040
.070
.070
STANDARD RANGE
MAXIMUM LIMITS AVAILABLE
NOTE:
All listed differential travel characteristics are based on standard operating force
andcontact separation. For any other force or contact separation, consult Customer
Service Center.
Operating force varies with actuator option, see ACTUATOR option section.
ELECTRICAL RATING
OPTION CODE
MOVABLE CONTACT
STATIONARY CONTACT
ELECTRICAL RATING
20 AMPS @ 125, 250 & 480 V AC; 0.25 AMPS @ 250 V DC; 0.5 AMPS @
125 V DC (UL).
5 AMPS @ 125 & 250 V AC (UL).
Precious metal alloy.
Gold alloy.
Fine silver.
Precious metal alloy.
Gold alloy.
Fine silver welded to
copper base.
20 AMPS @ 125, 250 & 480 V AC; 0.25 AMP @ 250 V DC; 0.5 AMP @
125 V DC; 3/4 HP @ 125 V AC; 1 1/2 HP @ 250 V AC (UL).
Low level* to 1 AMP @ 125 V AC; 1 AMP @ 30 V DC (UL).
22 AMPS @ 125 & 277 V AC; 15 AMPS @ 480 V AC; 1/4 HP @ 125 V AC;
1/2 HP @ 250 V AC; 277 V AC (UL).
J
B4
Fine silver.
Snap-acting
A2
B6
F5
F9
Fine silver welded to
copper base.
* Note: See Technical Data section of this catalog for RoHS compliant and compatible definition and specifications.
AVAILABLE COMBINATIONS
OPERATING FORCE (oz.)
ELECTRICAL
RATING
A2
B4
B6
F5
F9
4
GF
•
x
x
x
x
9
KA
•
•
x
x
x
13
KC
•
•
x
•
x
18
KG
•
•
•
•
•
20
KH
•
•
•
•
•
26
PB
•
•
•
•
•
• AVAILABLE
x NOT AVAILABLE
All models
with all options
Consult Customer Service center for availability and delivery of nonstandard ratings.
* Low Level=conditions where no arcing occurs during switching,
i.e., 0.4 VA max. @ 20 V AC or DC max.
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
J–52
www.ck-components.com
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