Proximity Sensors 4/6FR Series
One-Piece Ferromagnetic Actuated Reed Proximity Switches
B70 Honeywell 1MICRO SWITCH Sensing and Control 11-800-537-6945 USA 1F1-815-235-6847 International 11-800-737-3360 Canada
FEATURES
1Internal dry reed switch, ferrous metals
sensitive
1One piece construction aluminum
housing
1Single pole, single throw, normally open
circuitry
1May be used to directly drive low energy
circuits
1Long mechanical life
1Completely potted enclosure
1Hermetically sealed contacts
1No-touch detection of ferrous metals
1Standard 1/2 inch conduit outlet
1Can detect ferrous metal through
non-ferrous metal. Example: Steel
through stainless steel.
FR ORDER GUIDE
Catalog Listing
Heavy Duty Sensitivity* MUST Lead Length
Wires Cable in. (mm) Operate Pt. Feet/mm
4FR1-6 4FR2-25 0.50/12,7 0.35/8,9 6.0/1,83
6FR1-6 6FR2-6 0.75/19,1 0.60/15,2 6.0/1,83
*Nominal for low carbon steel, 1 x 3 x 0.25 in. (25,4 x 76,2 x 6,35 mm).
Note: 25 and 50 ft. (7,6 and 15,2m) lead lengths can be supplied, but longer lead lengths are not necessarily
stock items.
6FR1-6: 589,5g (20.8 oz)
CHARACTERISTICS
Circuitry Single pole, normally open
Response Time 1 millisecond
Repeatability (constant actuator 0.005 inch (0,13mm)
path, at stabilized temperature)
Power rating
AC (maximum) 15 VA, 500 mA, 280 V RMS
DC (maximum)* 15 watts, 500 mA, 400 V
Initial Contact Resistance
(closed circuit) 0.060 ohm max.
Switching Frequency Dependent on size and speed of
target. Has been tested to 100 Hz,
but should be operated at less than
700-800 Hz resonant frequency.
Reed Bounce Time 0.5 millisecond max.
Operating Life
Max. Load 100,000 operations min.
With 5FD1 relay load 50 million operations
Temperature Range –20°to +83°C (–4°to +181°F)
*DC rating with contact protection diode [N2071,
International Rect. 10D6, 600V. 1 amp or
equivalent] for increased life.
MOUNTING DIMENSIONS (For reference only)