MILITARY - ENVIRONMENTALLY SEALED SWITCHES MIL-S-3950 Lever Lock Switches Series - 8503, 8504, 8505 FEATURES SPECIFICATIONS * Environmentally sealed * 1, 2 and 4 pole circuitry * 2 & 3 position with maintained and momentary action * Locking actuator for safety * Molded-in terminal inserts and terminal numbers CURRENT RATINGS * Environmentally sealed per MIL-S-3950 * MS approved and QPL'd per MIL-S-3950 * Thermoset molding materials meet flame retardant requirements * Bushing: 15/32" - 32 thread * Temperature Range: -85F to +160F (-65C to +71C) * Life: 20,000 operations at rated load 40,000 operations mechanical life No. of Poles Catalog Number Type of Operation 28VDC Lamp Resistive Inductive Load Load Load 1 8503 Maintained 5 20 15 Momentary 4 15 10 2 8504 Maintained 7 20 15 Momentary 5 18 10 4 8505 Maintained 5 20 12 Momentary 4 18 10 Minimum Rating: "Intermediate Current" per MIL-S-3950. 115 VAC 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 LEVER LOCK SELECTION TABLE CIRCUIT WITH LEVER IN . . . Up Position ON J ON ON J ON ON J ON ON J ON ON J ON ON J ON ON ON J ON J ON ON J ON J ON ON ON J ON J ON J ON J ON J * ON * ON * ON NONE ON J OFFJ ON ON J ON J ON Center Position I OFF J I OFF J OFF I OFF J OFF OFF OFF J I OFF I OFF J OFFJ I OFF I OFF OFF J NONE NONE NONE NONE NONE NONE I OFF OFF I OFF I OFF OFF * NONE I OFF J OFF J I OFF OFF J NONE NONE I OFF J OFF I OFF J OFF J Down Position (Keyway) I ON I ON I ON ON ON I ON ON I ON ON ON ON ON I ON I OFF OFF I OFF I ON ON I ON NONE NONE NONE NONE NONE ON * ON * ON * ON * ON * OFF* ON * ON * ON * ON * ON * Lever M 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 8505 8504 8503 ONE POLE TWO POLE Flush Screw Terminals Flush Screw Terminals FOUR POLE MS Part Number Catalog Number MS Part Number Catalog Number MS24658-21A -21B -21D -21E -21F MS24658-21G -21H -21J -21K -21L MS24658-21M -21N -21P -22D -22F MS24658-22G -23D -23F -23G -24E MS24658-24F -24K -24M -25F -26F MS24658-27E -27L -27N -28E -29F MS24658-30F -31E -31F -31K -31L 8503K1 K27 K5 K2 K28 8503K3 K29 K30 K31 K32 8503K33 K4 K34 K10 K35 8503K9 K6 K36 K7 K16 8503K37 K38 K11 K22 K20 8503K12 K39 K14 K15 K21 8503K19 K18 K40 K41 K13 MS24659-21A -21B -21D -21E -21F MS24659-21G -21H -21J -21K -21L MS24659-21M -21N -21P -22D -22F MS24659-22G -23D -23F -23G -24E MS24659-24F -24K -24M -25F -26F MS24659-27E -27L -27N -28E -29F MS24659-30F -31E -31F -31K -31L 8504K1 K27 K5 K2 K28 8504K3 K29 K30 K31 K32 8504K33 K4 K34 K10 K35 8504K9 K6 K36 K7 K16 8504K37 K38 K11 K22 K20 8504K12 K39 K14 K15 K21 8504K19 K18 K40 K41 K13 Flush Screw Terminals MS Part Number MS24660-21A -21B -21D -21E -21F MS24660-21G -21H -21J -21K -21L MS24660-21M -21N -21P -22D -22F MS24660-22G -23D -23F -23G -24E MS24660-24F -24K -24M -25F -26F MS24660-27E -27L -27N -28E -29F MS24660-30F -31E -31F -31K -31L Catalog Number 8505K1 K27 K5 K2 K28 8505K3 K29 K30 K31 K32 8505K33 K4 K34 K10 K35 8505K9 K6 K36 K7 K16 8505K37 K38 K11 K22 K20 8505K12 K39 K14 K15 K21 8505K19 K18 K40 K41 K13 * Momentary contact. J Indicates direction against which lever is locked. See page A71 for circuit diagrams. M Reference bushing styles on page A26. EATON CORPORATION Aerospace TF300-5 June, 2004 A23