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Sensing and Control
Honeywell Inc.
11 West Spring Street
Freeport, Illinois 61032
Proximity Sensors
Compact Two-Piece Reed Proximity Switches
40/50 FR ORDER GUIDE
Contact
Arrangement
SPNO Preleaded
SPNC Preleaded
SPDT Preleaded
SPNO Connector
SPDT Connector
Catalog Listing
40FR1-3
40FR2-3-1
40FR3-3-1
40FR1-33
40FR3-33-1
40FR1-3-AG1
41FR2
52FR1
50FR2-3-1
50FR3-3-1
50FR4-3-1
40/50FR Series
40FR
SPNO Armour Cable
Magnet Actuator
N.O. condition: actuator is not present.
SPECIFICATIONS
Electrical Ratings All Listings
50FR
FEATURES
Magnetically actuated reed switch . . .
matching permanent magnet unit
Compact size
Long life
Rhodium plated, hermetically sealed
contacts
Electrically compatible with solid state
logic requirements
40FR 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
50 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
DC
10 watts max. resistive
Max. voltage, 100 VDC
Max. current, 300 mA
VDC
10-20
100
30
Max. Current
300 mA
100 mA
300 mA
AC
10 VA max. inrush or res.
Max. voltage, 132 VAC
Max. current, 750 mA
VAC
48
120
Max. Current
300 mA
85 mA
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.
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
2 m Straight Micro Connector
5 m Straight Micro Connector
2 m Right Angle Micro Connector
5 m Right Angle Micro Connector
Catalog Listing
804000A09M020
804000A09M050
804001A09M020
804001A09M050
B74
Honeywell MICRO SWITCH Sensing and Control 1-800-537-6945 USA
1-815-235-6847 International 1-800-737-3360 Canada
Proximity Sensors
Compact Two-Piece Reed Proximity Switches
OPERATING CHARACTERISTICS
40FR
Sensitivity*
Operate Point
Release Point
Hysteresis
SPNO
19,8
±
7,6
.780
+
.225
42,7 max.
1.68 max.
2,54 min.
.100 min.
11,4
±
3,8
.450
+
.150
17,8 max.
.700 max.
2,54 min.
.100 min.
50FR
40/50FR Series
*Based on head-on mode and 2 inch (50,8 mm)
mounting centers. Closer spacing may result in re-
duced sensitivity.
MOUNTING DIMENSIONS
(For reference only)
40FR1-3
mm
in.
40FR1-33 / 40FR3-33-1
2-WIRE DC TYPE
Sensor Pinout
Proximity
41FR2 Magnet Actuator is same
dimensions except no leadwire
or connector.
Pin 1 – Common
Pin 2 – No Function
Pin 3 – N.C.
Pin 4 – N.O.
52FR1
40FR1-3-AG1
50FR
1-20 Common
2-20 N.O.
3-20 N.C.
2-WIRE NON-POLARITY
SENSITIVE (shown on wire)
Honeywell MICRO SWITCH Sensing and Control 1-800-537-6945 USA
1-815-235-6847 International 1-800-737-3360 Canada
B75
