LF Series
Precision Snap-acting Reset Switches
Features/Benefits
•
Low operating force
•
Long life
•
Compact design
•
High electrical ratings
Typical Applications
•
Pumps
•
Furnace controls
Specifications
CONTACT RATING: See chart on next page
ELECTRICAL LIFE: 100,000 cycles at 5 Amps @ 250
INSULATION RESISTANCE: 1,000 Meg Ohms Min.
DIELECTRIC STRENGTH: 1,000 V RMS min. @ sea
OPERATING TEMPERATURE: -40 C to 95 C
OPERATING FORCE: see chart on next page
MOUNTING: 2-56 screws, torque 2.3 in/ lbs max (not included)
Materials
SWITCH HOUSING: 6/6 nylon or PBT 94V0
ACTUATOR BUTTON: Thermoset 05A option only
SPRING: Stainless steel 05B option
MOVABLE CONTACT: Fine silver or silver/nickel
STATIONARY CONTACT: Fine silver on copper alloy
LEVER: 05A option stainless steel
05B option PBT 94V0
K
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 page K-63. For additional options not shown in catalog, consult Customer Service Center.
L
Series
LF
Electrical Rating
05A
(see chart next page)
05B
(see chart next page)
F
0
5
0
Q
Y
Operating Force
080
0.53 oz / 15 grams max.
010
0.35 oz. / 10 grams max.
Actuator
L27
1.078 (27,39) Stainless lever
(option 05A only)
P27
1.078 (27,39) Plastic lever
(option 05B only)
P40
1.591 (40,41) Plastic lever
(option 05B only)
Terminations
Q
.110 quick connect
Circuitry
Y
N.O.
Dimensions are shown: Inch (mm)
Specifications and dimensions subject to change
K–62
www.ck-components.com
LF Series
Precision Snap-acting Reset Switches
LF
PRECISION SNAP-ACTING RESET SWITCH
.240
(6,10)
.050
(1,27)
.181
(4,60)
.281
(7,14)
1.078
(27,39)
.898
(22,8)
.075
(1,91)
.370-.510
(9,4-12,95)
OPER. POS.
.265
(6,73)
.284
(7,21)
.020
(0,51)
.762
(19,35)
.835
(21,21)
.108
(2,74)
.074
(1,88)
.098 DIA
(2,49ø)
.276 TYP.
(7,01)
.110
(2,79)
.255
(6,48)
K
ELECTRICAL RATING
Snap-acting
Electrical Rating
Option
Code
RoHS
Compliant *
RoHS
Compatible *
Moveable Contact
Stationary Contact
Electrical Rating
5 Amps @ 250VAC (UL/CSA)
2 Amps @ 480VAC (UL/CSA)
1/2 @ 480VAC (UL/CSA)
5 (1) @ 250VAC-10E3 T90 (VDE)
5 Amps @ 125/250 VAC (UL/CSA)
5 (1) @ 250VAC-10E3 T90 (VDE)
1/8 HP @ 125 VAC
1/4 HP @ 250 VAC
05A
Yes
Yes
Fine Silver
Fine Silver on
copper alloy
05B
Yes
Yes
Silver / Nickel
Fine Silver on
copper alloy
All models
with all options.
OPERATING FORCE & ACTUATOR
Switch Characteristic
Option Code
L27
P27
P40
Maximum Operate Force
oz/grams
0.53 / 15
0.35 / 10
0.35 / 10
Operating Position
.398 ± .05
.398 ± .05
.500 ± .05
Differential Travel
.130 ± .030
.130 ± .030
.140 ± .030
Dimensions are shown: IN (mm)
Specifications and dimensions subject to change
K-63
www.ck-components.com
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