SNAP ACTION SWITCHES U LTRA S UB -M INIATURE 7 AMP D OUBLE -B REAK SERIES 18: ACTUAL SIZE APPLICATIONS ULTRA SUB-MINIATURE 7 AMP 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). (R) * * * * * * * * 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 Industrial valve controls Aircraft rotary actuator Aircraft linear actuator Float control pumps Spool valves Medical equipment Aircraft fuel valves Pressure switches ORDERING INFORMATION: Switches Part Number Contacts Terminals RoHS Compliant 18-40421 Gold Plated End Solder 18-488051 (MS27257-1) Gold Plated End Solder -- actuator (see page 68 for additional specifications) Part Number Oper. Force Release Force Pretravel Overtravel Movement Diff. Operating Point 78-3000 Spring Lever 6 2 oz 2 oz min .125 max 030 min .030 .015 .325 .030 78-3100 Roller Lever 6 2 oz 2 oz min .125 max .030 min .035 .015 .560.030 STANDARDS / AGENCY / RATINGS: (R) RoHS COMPLIANT 2002 / 95 / EC www.itwswitches.com 50 V D E 2 IEC IP67 COMPLIANT Contact an Authorized Distributor or Factory for Pricing SERIES 18: ULTRA SUB-MINIATURE 7 AMP DOUBLE-BREAK SNAP ACTION SWITCHES MECHANICAL / ELECTRICAL CHARACTERISTICS: BASIC SWITCH Pretravel: 0.030 inches max Overtravel: 0.006 inches min Operating Force: 5 oz + 3 oz - 2 oz 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: Circuitry Current 2 Circuit (SPDT-DB) 1 Circuit (SPST) 5 amp Res 3 amp Ind* 8 amp Res 7 amp Ind* Copyright (c) 2008 ITW Switches 07/08 *L/R = .026 Designs and specifications are subject to change without notice due to product improvement. 51 800.544.3354