Contact an Authorized Distributor or Factory for Pricing
50
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APPLICATIONS
•Industrial valve controls
•Aircraft rotary actuator
•Aircraft linear actuator
•Float control pumps
•Spool valves
•Medical equipment
•Aircraft fuel valves
•Pressure switches
ULTRA SUB-MINIATURE 7AMP DOUBLE-BREAK SNAP ACTION SWITCHES
Series 18 switches feature the Butterfly®double-break momentary switch
mechanism. This very small package can carry a full 7 amp load
(or low current load).
KEY FEATURES:
•Gold contacts
•Solder terminals
•Meets MIL-S-8805
•UL recognized and CSA certified:
7 amps @ 125/250 VAC
•Lever and roller actuator are
available
ACTUAL SIZE
STANDARDS / AGENCY / RATINGS:
RoHS
COMPLIANT
2002 / 95 / EC
✓2
IEC
IP67
COMPLIANT
✓✓
®V
D E
SERIES 18:
ULTRA SUB-MINIATURE 7AMP DOUBLE-BREAK
SNAP ACTION SWITCHES
ORDERING INFORMATION:
Part Number Contacts Terminals RoHS Compliant
18-40421 Gold Plated End Solder
18-488051
(MS27257-1) Gold Plated End Solder —
Switches
Part Number Oper. Force Release Force Pretravel Overtravel Movement Diff. Operating Point
78-3000 6 ± 2 oz 2 oz min .125 max 030 min .030 ± .015 .325 ± .030
Spring Lever
78-3100 6 ± 2 oz 2 oz min .125 max .030 min .035 ± .015 .560±.030
Roller Lever
actuator (see page 68 for additional specifications)
MECHANICAL / ELECTRICAL
CHARACTERISTICS:
Pretravel:
0.030 inches max
Overtravel:
0.006 inches min
Operating Force:
5oz+3oz-2oz
Release Force:
1.5 oz min
Movement Differential:
0.015 inches ± 0.005
Operating Point:
0.320 inches ± 0.015
(from mounting hole centers)
Circuit:
SPDT-DB (Form Z)
Electrical Rating @ 28VDC:
800.544.3354
SERIES 18: ULTRA SUB-MINIATURE 7AMP DOUBLE-BREAK
Designs and specifications are subject to change
without notice due to product improvement. 51
Copyright © 2008 ITW Switches 07/08
SNAP ACTION SWITCHES
Circuitry Current
2 Circuit 5 amp Res
(SPDT-DB) 3 amp Ind*
1 Circuit 8 amp Res
(SPST) 7 amp Ind*
*L/R = .026
BASIC SWITCH
