Interactive Catalog Replaces Catalog Pages
Sensing and Control
Honeywell Inc.
11 West Spring Street
Freeport, Illinois 61032
Honeywell Sensing and Control has replaced
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Proximity Sensors 40/50FR Series
Compact Two-Piece Reed Proximity Switches
B74 Honeywell 1MICRO SWITCH Sensing and Control 11-800-537-6945 USA 1F1-815-235-6847 International 11-800-737-3360 Canada
40FR
50FR
FEATURES
1Magnetically actuated reed switch . . .
matching permanent magnet unit
1Compact size
1Long life
1Rhodium plated, hermetically sealed
contacts
1Electrically compatible with solid state
logic requirements
140FR switch and 41FR magnet . . .
Contact area hermetically glass-to-metal
sealed
Epoxy embedded terminals to prevent
shorting
Epoxy embedded reed for shock and
vibration protection
150 FR switch and 52FR1 magnet
Enclosed in high impact thermoplastic
housings
Embedded in epoxy for protection from
shock, vibration, environmental abuse
Particularly suited for use in portable
equipment and as a liquid level sensor
in a float
40/50 FR ORDER GUIDE
Contact
Arrangement Catalog Listing
SPNO Preleaded 40FR1-3 50FR2-3-1
SPNC Preleaded 40FR2-3-1 50FR3-3-1
SPDT Preleaded 40FR3-3-1 50FR4-3-1
SPNO Connector 40FR1-33
SPDT Connector 40FR3-33-1
SPNO Armour Cable 40FR1-3-AG1
Magnet Actuator 41FR2 52FR1
N.O. condition: actuator is not present.
SPECIFICATIONS
Electrical Ratings All Listings
DC AC
10 watts max. resistive 10 VA max. inrush or res.
Max. voltage, 100 VDC Max. voltage, 132 VAC
Max. current, 300 mA Max. current, 750 mA
VDC Max. Current VAC Max. Current
10-20 300 mA 48 300 mA
100 100 mA 120 85 mA
30 300 mA
Contact Resistance: 200 milliohms max.
(initial), up to 2 ohms max. during life.
Insulation Resistance: 100 megohms min.
at 200 VDC.
Dielectric Strength: 200 VAC RMS, 60 Hz
between two wire leads with contacts fully
open.
APPLICATION PRECAUTIONS
1. Do not subject these switches to the influ-
ence of strong magnetic fields.
2. When the magnet is exposed to ferrous
filings, a loss of sensitivity can be
expected.
3. Use arc suppression networks to extend
life in inductive circuits.
4. Do not subject these switches to extreme
vibration.
MICRO SWITCH CABLES FOR CONNECTOR VERSIONS ORDER GUIDE
Type Catalog Listing
2 m Straight Micro Connector 804000A09M020
5 m Straight Micro Connector 804000A09M050
2 m Right Angle Micro Connector 804001A09M020
5 m Right Angle Micro Connector 804001A09M050
Electrical Life: Up to 30,000,000 operations,
depending on load. Virtually infinite life at
reduced loads.
Temperature Range: –40°to +125°C
(–40°to +257°F)
Material: Housings 40 FR- Polycarbonate,
50 FR- Glass filled Diallyl Phthalate (DAP)
wire insulation 40/50 FR- extruded polyal-
kene.
Proximity Sensors 40/50FR Series
Compact Two-Piece Reed Proximity Switches
Honeywell 1MICRO SWITCH Sensing and Control 11-800-537-6945 USA 1F1-815-235-6847 International 11-800-737-3360 Canada B75
OPERATING CHARACTERISTICS
40FR 50FR
Sensitivity* SPNO
Operate Point 19,8 ±7,6 11,4 ±3,8
.780 +.225 .450 +.150
Release Point 42,7 max. 17,8 max.
1.68 max. .700 max.
Hysteresis 2,54 min. 2,54 min.
.100 min. .100 min.
*Based on head-on mode and 2 inch (50,8 mm)
mounting centers. Closer spacing may result in re-
duced sensitivity.
MOUNTING DIMENSIONS mm
in.(For reference only)
40FR1-3 40FR1-33/40FR3-33-1 2-WIRE DC TYPE
Sensor Pinout
Pin 1 – Common
Pin 2 – No Function
Pin 3 – N.C.
Pin 4 – N.O.
41FR2 Magnet Actuator is same
dimensions except no leadwire
or connector.
40FR1-3-AG1 50FR 52FR1
2-WIRE NON-POLARITY
SENSITIVE (shown on wire)
1-20 Common
2-20 N.O.
3-20 N.C.
Proximity
