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Sensing and Control Honeywell Inc. 11 West Spring Street Freeport, Illinois 61032

Basic Switches Hermetically Sealed
GENERAL INFORMATION HM switches are not generally recommended for 115 VAC, 60 Hz. If you have a 60 Hz application in the milliamp range, or applications that require the switch to function electrically during exposure to sub-freezing temperatures, contact the 800 number for special design variations that are available.

HM Series
FEATURES ? Hermetically sealed per enclosure design symbol 5, MIL-S-8805 ? Power load switching capability up to 4 amperes, 28 VDC and 115 VAC, 400 Hz ? Temperature tolerance from –85°F to +250°F (–65°C to +121°C) ? High temperature construction for use from –85°F to +500°F (–65°C to +260°C) ? Variety of auxiliary actuators ? Choice of terminal styles ? Gold contacts for special applications ? Military standard construction with listings on the MIL-S-8805 qualified products list.

ELECTRICAL RATINGS
Circuitry Single-Pole Double-Throw Single-Pole Double-Throw Single-Pole Double-Throw Single-Pole Double-Throw Single-Pole Double-Throw H I Electrical Rating Code 1 amp res., 0.25 amp ind., 28 vdc. 4 amps res., 2 amps ind., 0.5 amps lamp load, 115 vac, 400 Hz. 4 amps res., 2 amps ind., 1 amp lamp load, 28 vdc
1

J K L

?2 amp res., 1?4 amp ind. (sea level or 70,000 ft.), 28 vdc 3 amps res., 1 amp ind. (sea level or 70,000 ft.), 28 vdc 1 amp res. or ind. (sea level), 115 vac., 400 Hz. 3 amp res., 1 amp ind., 28 vdc 1 amp res., 1 amp ind., 115 vac, 400 Hz.

APPLICATION NOTES 1. Honeywell MICRO SWITCH does not recommend the use of silver cadmium oxide switch contacts in non-arcing loads. Non-arcing loads are generally loads less than 12 volts and/or 0.5 amp. Catalog listings in the 5, 6, 15, and 16HM Series use silver cadmium oxide contacts. If you have specific questions, contact the MICRO SWITCH Application Center at 1-800-537-6945. 2. For applications involving non-arcing loads, catalog listings in the 9, 10, 19 and 20HM Series are recommended. 3. The 1, 2, 5, and 6HM Series are recommended for use only in 3 to 4 amp range applications.

80

Honeywell Sensing and Control

For application help: call 1-800-537-6945.

Basic Switches Hermetically Sealed

HM Series
Characteristics: O.F. — Operating Force; R.F. — Release Force; P .T. — Pretravel; O.T. — Overtravel; D.T. — Differential Travel; O.P . — Operating Position.

ORDER GUIDE
Operating Characteristics Electrical Rating Code K O.F. max. R.F. min. Newtons Newtons ounces ounces 1,95 7 0,28 1 P .T. max. mm inches 0,76 .030 O.P . O.T. min. D.T. max. mm mm mm inches inches inches ±.015 (0,38 mm) 0,08 .003 0,15 .006 8,38 .330

Catalog Listing 11HM1 (MS27216-5)

Recommended For Most applications. Exceeds MIL-S-8805 requirements for shock and vibration. Applications requiring gold contacts Operating in temperatures to 300°F (149°C) Bifurcated gold contacts MIL-S-8805 application requirements 1 ft. (305mm) leads 5 foot (1524mm) long leads

13HM1 Fig. 1 15HM1

H L

1,95 7 1,95 7 1,95 7 1,95 7

0,28 1 0,28 1 0,28 1 0,28 1

0,76 .030 0,76 .030 0,76 .030 0,76 .030

0,08 .003 0,08 .003 0,08 .003 0,08 .003

0,15 .006 0,15 .006 0,15 .006 0,15 .006

8,38 .330 8,38 .330 8,38 .330 8,38 .330

9HM1 (MS27216-6) 2HM19-1 (MS27216-2)

J I

2HM19-5 (MS27216-4) Fig. 2 16HM1-1

I

1,95 7

0,28 1

0,76 .030

0,08 .003

0,15 .006

8,38 .330

High temperature to 500°F (260°C) flat spring

L

1,95 7

0,28 1

0,76 .030

0,08 .003

0,15 .006

8,38 .330

Fig. 3 15HM2 Operating in temperatures to +500°F (260°C) with weld tab termination. No potting. L 1,95 7 0,28 1 0,76 .030 0,08 .003 0,15 .006 8,38 .330

Sealed/High Temperature

Fig. 4

HM MOUNTING A force spreading plate is recommended to reduce the chance of product damage due to excessive mounting force. MOUNTING PLATE
19PA137-HM

NOTE Torque on #2 mounting screws must be restricted to 1.5 inch pounds max. to prevent switch damage. The force spreading mounting plate used as shown will allow up to 2.5 inch pounds of mounting torque.

For application help: call 1-800-537-6945.

Honeywell Sensing and Control

81

Basic Switches Hermetically Sealed

HM Series
Characteristics: O.F. — Operating Force; R.F. — Release Force; P .T. — Pretravel; O.T. — Overtravel; D.T. — Differential Travel; O.P . — Operating Position; F.P . — Free Position.

AUXILIARY ACTUATORS FOR HM SWITCHES ORDER GUIDE (Switches are not included)
Operating Characteristics with Actuator Mounted on a 6HM1-1 Catalog Listing JS-254 Temp. (Max.) 500°F (260°C) O.F. max. R.F. min. Newtons Newtons ounces ounces 2,50 9 0,56 2 P .T. max. mm inches — O.T. min. D.T. max. mm mm inches inches 0,76 .030 0,76 .030 O.P . mm inches F.P . mm inches

Description Leaf

8,64 12,2 .340 approx. .480 approx.

Fig. 5 JS-151 Roller leaf 500°F (260°C) 2,50 9 0,56 2 — 0,76 .030 0,76 .030 14 17,5 .550 approx. .690 approx.

Fig. 6 JS-307 Straight lever 500°F (260°C) 0,42 1.5 0,03 .11 3,18 .125 approx. 0,64 .025 1,42 .056 10,3 .406 approx.

Fig. 7 JS-308 Roller lever 500°F (260°C) 0,42 1.5 0,03 .11 3,18 .125 approx. 0,64 .025 1,42 .056 14,3 .562 approx.

Fig. 8

MOUNTING TORQUE: JS-254 2.5 inch pounds all others 1.5 inch pounds See optional mounting plate – previous page.

All standard JS actuators in the SM Section of Catalog 10 can be used with the HM line. However, hardware, insulator, and oil impregnated roller supplied with these actuators may not provide the required service at temperatures above 250°F (121°C).

82

Honeywell Sensing and Control

For application help: call 1-800-537-6945.

Basic Switches Hermetically Sealed
MOUNTING DIMENSIONS (For reference only)

HM Series

Fig. 1

Fig. 2

Fig. 3

Fig. 4

AUXILIARY ACTUATORS

Sealed/High Temperature

Fig. 5

Fig. 6

Fig. 7

Fig. 8

For application help: call 1-800-537-6945.

Honeywell Sensing and Control

83



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