MILITARY--ENVIRONMENTALLY SEALED SWITCHES Series--8573, 8574, 8575 MIL-S-3950 IWTS Lever Locks FEATURES SPECIFICATIONS * Environmentally sealed * Environmentally sealed per MIL-S-3950 * 1, 2, and 4 pole circuitry * MS approved and QPL'd per MIL-S-3950 * 2 & 3 position with maintained and * Thermoset molding materials meet flame momentary action retardant requirements * Integrated wire termination system * Bushing: 15/32" - 32 thread (IWTS) for ease of wiring * Temperature Range: -85F to +160F * Terminal numbers molded into silicone (-65C to +71C) base seal * Accepts MIL-C-39029/1-101 pin * Life: 20,000 operations at rated load 40,000 operations mechanical life LEVER LOCK SELECTION TABLE - T er minals Accept W Ter minals Accept W CURRENT RATINGS No. of Catalog Type of Poles Number Operation 1 8573 2 8574 4 8575 Maintained Momentary Maintained Momentary Maintained Momentary CIRCUIT WITH LEVER IN... Center Position ir e Contact Within Dimensional Limits of M39029/1-102 for -16 wire size ir e Contact Within Dimensional Limits of M39029/1-101 for -20 wire size Lever Lock Bushing Style ON OFF ON A ON OFF ON B ON OFF ON D ON OFF ON E ON OFF ON F ON OFF ON G ON OFF ON H ON OFF ON J ON OFF ON K ON OFF ON L ON OFF ON M ON OFF ON N ON OFF ON P ON NONE OFF D ON NONE OFF F ON NONE OFF G ON NONE ON D ON NONE ON F ON NONE ON G ON OFF NONE E ON OFF NONE F ON OFF NONE K ON OFF NONE M ON OFF NONE F ON NONE ON F ON OFF ON E ON OFF ON L ON OFF ON N NONE OFF ON E ON NONE OFF F OFF NONE ON F ON OFF ON E ON OFF ON F ON OFF ON K ON OFF ON L Momentary contact. Indicates direction against which lever is locked. * * * * ONE POLE Down Position (Keyway) * * * * * * * * * * * * 115VAC 60 or 400Hz Lamp Resistive Inductive Load Load Load 3 15 10 2 15 7 4 15 15 2 11 8 4 15 15 2 11 8 Minimum Rating: "Intermediate Current" per MIL-S-3950 8573 Up Position 28VDC Lamp Resistive Inductive Load Load Load 5 20 15 4 15 10 7 20 15 5 18 10 5 20 12 4 18 10 Flush Screw Terminals MS Part Catalog Number Number 8574 TWO POLE Flush Screw Terminals MS Part Catalog Number Number MS27781-21A 8573K1-16 MS27782-21A -21B K27-16 -21B -21D K5-16 -21D -21E K2-16 -21E -21F K28-16 -21F MS27781-21G 8573K3-16 MS27782-21G -21H K29-16 -21H -21J K30-16 -21J -21K K31-16 -21K -21L K32-16 -21L MS27781-21M 8573K33-16 MS27782-21M -21N K4-16 -21N -21P K34-16 -21P -22D K10-16 -22D -22F K35-16 -22F MS27781-22G 8573K9-16 MS27782-22G -23D K6-16 -23D -23F K36-16 -23F -23G K7-16 -23G -24E K16-16 -24E MS27781-24F 8573K37-16 MS27782-24F -24K K38-16 -24K -24M K11-16 -24M -25F K22-16 -25F -26F K20-16 -26F MS27781-27E 8573K12-16 MS27782-27E -27L K39-16 -27L -27N K14-16 -27N -28E K15-16 -28E -29F K21-16 -29F MS27781-30F 8573K19-16 MS27782-30F -31E K18-16 -31E -31F K40-16 -31F -31K K41-16 -31K 31L K13-16 -31L See page 73 for circuit diagrams. Reference bushing styles on Page 42. 8574K1-16 K27-16 K5-16 K2-16 K28-16 8574K3-16 K29-16 K30-16 K31-16 K32-16 8574K33-16 K4-16 K34-16 K10-16 K35-16 8574K9-16 K6-16 K36-16 K7-16 K16-16 8574K37-16 K38-16 K11-16 K22-16 K20-16 8574K12-16 K39-16 K14-16 K15-16 K21-16 8574K19-16 K18-16 K40-16 K41-16 K13-16 8575 FOUR POLE Flush Screw Terminals MS Part Catalog Number Number MS27783-21A -21B -21D -21E -21F MS27783-21G -21H -21J -21K -21L MS27783-21M -21N -21P -22D -22F MS27783-22G -23D -23F -23G -24E MS27783-24F -24K -24M -25F -26F MS27783-27E -27L -27N -28E -29F MS27783-30F -31E -31F -31K -31L 8575K1-16 K27-16 K5-16 K2-16 K28-16 8575K3-16 K29-16 K30-16 K31-16 K32-16 8575K33-16 K4-16 K34-16 K10-16 K35-16 8575K9-16 K6-16 K36-16 K7-16 K16-16 8575K37-16 K38-16 K11-16 K22-16 K20-16 8575K12-16 K39-16 K14-16 K15-16 K21-16 8575K19-16 K18-16 K40-16 K41-16 K13-16 MILITARY--ENVIRONMENTALLY SEALED SWITCHES Series--8573, 8574, 8575 MIL-S-3950 IWTS Lever Locks LEVER LOCK SELECTION TABLE, CON'T. 8573 CIRCUIT WITH LEVER IN... Up Position ONE POLE Down Position (Keyway) Lever Lock Bushing Style ON OFF ON M ON OFF ON N ON ON NONE E ON ON NONE E ON ON NONE F ON ON NONE K ON ON NONE M ON ON ON A ON ON ON B ON ON ON D ON ON ON E ON ON ON F ON ON ON G ON ON ON H ON ON ON J ON ON ON K ON ON ON L ON ON ON M ON ON ON N ON ON ON P ON ON ON E ON ON ON F ON ON ON K ON ON ON L ON ON ON M ON ON ON N ON ON ON E ON ON ON L ON ON ON N Momentary contact. Indicates direction against which lever is locked. See page 73 for circuit diagrams. Reference bushing styles on Page 42. * * * Center Position * * * * 8574 * * * * * * * * * TWO POLE Flush Screw Terminals MS Part Catalog Number Number MS27781-31M -31N -32E -33E -33F MS27781-33K -33M - - - 8573K17-16 K8-16 K23-16 K24-16 K25-16 8573K26-16 K42-16 - - - - - - - - - - - FOUR POLE Flush Screw Terminals MS Part Catalog Number Number MS27782-31M -31N -32E -33E -33F MS27782-33K -33M -1A -1B -1D MS27782-1E -1F -1G -1H -1J MS27782-1K -1L -1M -1N -1P MS27782-2E -2F -2K -2L -2M MS27782-2N -3E -3L -3N 8575 8574K17-16 K8-16 K23-16 K24-16 K25-16 8574K26-16 K42-16 K65-16 K66-16 K67-16 8574K68-16 K69-16 K70-16 K71-16 K72-16 8574K73-16 K74-16 K75-16 K76-16 K77-16 574K78-16 K79-16 K80-16 K81-16 K82-16 8574K83-16 K84-16 K85-16 K86-16 Flush Screw Terminals MS Part Catalog Number Number MS27783-31M -31N -32E -33E -33F MS27783-33K -33M -1A -1B -1D MS27783-1E -1F -1G -1H -1J MS27783-1K -1L -1M -1N -1P MS27783-2E -2F -2K -2L -2M MS27783-2N -3E -3L -3N 8575K17-16 K8-16 K23-16 K24-16 K25-16 8575K26-16 K42-16 K43-16 K44-16 K45-16 8575K46-16 K47-16 K48-16 K49-16 K50-16 8575K51-16 K52-16 K53-16 K54-16 K55-16 8575K56-16 K57-16 K58-16 K59-16 K60-16 8575K61-16 K62-16 K63-16 K64-16 MILITARY--ENVIRONMENTALLY SEALED SWITCHES Series--8573, 8574, 8575 MIL-S-3950 IWTS Lever Locks CIRCUIT WITH LEVER IN... Up Position Center Position ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON NONE ON OFF ON ON ON ON OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF NONE NONE NONE NONE NONE NONE OFF OFF OFF OFF OFF NONE OFF OFF OFF OFF NONE NONE OFF OFF OFF OFF * * * * * * * ONE POLE Down Position (Keyway) ON ON ON ON ON ON ON ON ON ON ON ON ON OFF OFF OFF ON ON ON NONE NONE NONE NONE NONE ON ON ON ON ON OFF ON ON ON ON ON * * * * * * * * * * * ON ON* NO* NE Lever Lock Bushing Style A B D E F G H J K L M N P D F G D F G E F K M F F E L N E F F E F K L ON OFF M ON OFF N ON ON E ON ON NONE E ON ON NONE F ON ON NONE K ON ON NONE M ON ON ON A ON ON ON B ON ON ON D ON ON ON E ON ON ON F ON ON ON G ON ON ON H ON ON ON J ON ON ON K ON ON ON L ON ON ON M ON ON ON N ON ON ON P ON ON ON E ON ON ON F ON ON ON K ON ON ON L ON ON ON M ON ON ON N ON ON ON E ON ON ON L ON ON ON N Momentary contact. Indicates direction against which lever is locked. See page 73 for circuit diagrams. Reference bushing styles on Page 42. * * * * * * * * * * TWO POLE Flush Screw Terminals MS Part Catalog Number Number Flush Screw Terminals MS Part Catalog Number Number FOUR POLE Flush Screw Terminals MS Part Catalog Number Number MS27787-21A -21B -21D -21E -21F MS27787-21G -21H -21J -21K -21L MS27787-21M -21N -21P -22D -22F MS27787-22G -23D -23F -23G -24E MS27787-24F -24K -24M -25F -26F MS27787-27E -27L -27N -28E -29F MS27787-30F -31E -31F -31K 31L 8573K1-20 K27-20 K5-20 K2-20 K28-20 8573K3-20 K29-20 K30-20 K31-20 K32-20 8573K33-20 K4-20 K34-20 K10-20 K35-20 8573K9-20 K6-20 K36-20 K7-20 K16-20 8573K37-20 K38-20 K11-20 K22-20 K20-20 8573K12-20 K39-20 K14-20 K15-20 K21-20 8573K19-20 K18-20 K40-20 K41-20 K13-20 MS27788-21A -21B -21D -21E -21F MS27788-21G -21H -21J -21K -21L MS27788-21M -21N -21P -22D -22F MS27788-22G -23D -23F -23G -24E MS27788-24F -24K -24M -25F -26F MS27788-27E -27L -27N -28E -29F MS27788-30F -31E -31F -31K -31L 8574K1-20 K27-20 K5-20 K2-20 K28-20 8574K3-20 K29-20 K30-20 K31-20 K32-20 8574K33-20 K4-20 K34-20 K10-20 K35-20 8574K9-20 K6-20 K36-20 K7-20 K16-20 8574K37-20 K38-20 K11-20 K22-20 K20-20 8574K12-20 K39-20 K14-20 K15-20 K21-20 8574K19-20 K18-20 K40-20 K41-20 K13-20 MS27789-21A -21B -21D -21E -21F MS27789-21G -21H -21J -21K -21L MS27789-21M -21N -21P -22D -22F MS27789-22G -23D -23F -23G -24E MS27789-24F -24K -24M -25F -26F MS27789-27E -27L -27N -28E -29F MS27789-30F -31E -31F -31K -31L 8575K1-20 K27-20 K5-20 K2-20 K28-20 8575K3-20 K29-20 K30-20 K31-20 K32-20 8575K33-20 K4-20 K34-20 K10-20 K35-20 8575K9-20 K6-20 K36-20 K7-20 K16-20 8575K37-20 K38-20 K11-20 K22-20 K20-20 8575K12-20 K39-20 K14-20 K15-20 K21-20 8575K19-20 K18-20 K40-20 K41-20 K13-20 MS27787-31M -31N -32E -33E -33F MS27787-33K -33M - - - 8573K17-20 K8-20 K23-20 K24-20 K25-20 8573K26-20 K42-20 - - - MS27788-31M -31N -32E -33E -33F MS27788-33K -33M -1A -1B -1D MS27788-1E -1F -1G -1H -1J MS27788-1K -1L -1M -1N -1P MS27788-2E -2F -2K -2L -2M MS27788-2N -3E -3L -3N 8574K17-20 K8-20 K23-20 K24-20 K25-20 8574K26-20 K42-20 K65-20 K66-20 K67-20 8574K68-20 K69-20 K70-20 K71-20 K72-20 8574K73-20 K74-20 K75-20 K76-20 K77-20 8574K78-20 K79-20 K80-20 K81-20 K82-20 8574K83-20 K84-20 K85-20 K86-20 MS27789-31M -31N -32E -33E -33F MS27789-33K -33M -1A -1B -1D MS27789-1E -1F -1G -1H -1J MS27789-1K -1L -1M -1N -1P MS27789-2E -2F -2K -2L -2M MS27789-2N -3E -3L -3N 8575K17-20 K8-20 K23-20 K24-20 K25-20 8575K26-20 K42-20 K43-20 K44-20 K45-20 8575K46-20 K47-20 K48-20 K49-20 K50-20 8575K51-20 K52-20 K53-20 K54-20 K55-20 8575K56-20 K57-20 K58-20 K59-20 K60-20 8575K61-20 K62-20 K63-20 K64-20 - - - - - - - - MILITARY--ENVIRONMENTALLY SEALED SWITCHES Series--8573, 8574, 8575 MIL-S-3950 IWTS Lever Locks MOUNTING DIMENSIONS--ONE POLE / 8573 Terminal Identification MOUNTING DIMENSIONS--TWO POLE / 8574 STANDARD 0.00 = inches [0,0] = mm Mounting dimensions for reference only. Non-functional terminals not supplied. Terminal Identification MILITARY--ENVIRONMENTALLY SEALED SWITCHES Series--8573, 8574, 8575 MIL-S-3950 IWTS Lever Locks MOUNTING DIMENSIONS--FOUR POLE / 8575 Terminal Identification OPTIONS/ACCESSORIES * Special mounting hardware * Mounting hardware furnished assembled * Special circuits * Panel seal, part number 32-341 (See Accessories and Custom Components section) * Special shaped caps available * Custom wiring harnesses LEVER LOCK - BUSHING STYLES KEYWAY SIDE PANEL CUTOUT DIMENSIONS STANDARD 0.00 = inches [0,0] = mm Mounting dimensions for reference only.