MICRO SWITCH™ Safety Switches

Machine Safety

From factory floor to assembly line, from packaging machinery to robot cells, Honeywell delivers reliability and safety in compact, cost-effective safety switches. Enhanced performance, extended productivity, and full-line flexibility. Most models are SIL 3 capable.

Safety Switches FFSafety Switches GKMSafety Switches GKN
Attributesnon-contact safety switches either magnetically operated
or by electronically coded magnets providing high degree of tamper-proof, reliable operation
most compact key-operated safety product available; fully sealed constructioncommon footprint safety switch for multiple applicability; multiple contacts, multiple key and wiring entry points
Potential applicationssmall doors and aperturessmall doors and aperturessmall/medium doors and apertures
HousingABS resin-filled, stainless steelglass-filled polyesterglass-filled polyester
ApprovalsUL, CEUL, CSA, CE, S-mark, SIL 3 capablecULus, CE, CCC, S-mark, SIL 3 capable
SealingIP67, NEMA 4IP67; NEMA 1, 12, 13IP67; NEMA 1, 4, 12, 13
Differentiatorlarge actuation window from almost any angle
(ranges ~6 mm to 20 mm); sealed, compact and rugged design
can be used for doors as small as 160 mm [6.3 in] with small closed radius; available cabled or with integrated M12 connectors for plug-and-play installone switch stocking for multiple contact, key entry, and wiring application combinations; large wiring cavity
Measurements (less levers)
H x W x D
82,5 mm x 19 mm x 17 mm
[3.25 in x 0.75 in x 0.67 in]
69,4 mm x 34,0 mm x 16,0 mm
[2.73 in x 1.34 in x 0.63 in]
90,0 mm x 40,0 mm x 33,0 mm
[3.55 in x 1.57 in x 1.30 in]
Temperature-10 °C to 55 °C [14 °F to 131 °F]25 °C to 85 °C [-13 °F to 185 °F]-25 °C to 70 °C [-13 °F to 158 °F]
FeaturesDIN rail mounting; guard status indication; small, easy to mount; either pre-wired or connector fitteddouble insulated, no ground wiring required; wiring entrance options from bottom, side, or both (dual entry GKME for daisy chain capability); variety of keys available for top or front entry options.multi-use, multi-option; up to 3 contacts for additional monitoring; 4 key head entries; knock-out points for wiring entry; double insulated body; rigid and flexible key options available


Safety Switches GKESafety Switches GKSSafety Switches GSX
Attributescompact housing size, standard IEC 20mm mountingsolenoid trapped key interlock switch
designed not to release until hazard has been removed
heavy-duty metal body, explosion-proof safety
switch designed for hazardous area applications
Potential applicationssmall doors and aperturesmedium to large door applicationsgates, doors, access panels, cages
Housingglass-filled polyesterglass-filled polyesteraluminum
ApprovalscULus, CE, S-mark, SIL 3 capablecULus, CE, CCC, S-mark, SIL 3 capablecULus, ATEX, IEC Ex, SIL 3 capable
SealingIP66; NEMA 1, 12, 13IP67; NEMA 1, 4X, 12, 13IP67; NEMA 1, 4, 6, 7, 9, 12, 13
Differentiatorsmall MIN-DIN footprint; simple wiring
and mounting; double insulated
simple-to-mount, slim-mount glass filled
polyester body; available with key entry
(four available square positions); up to four contacts
explosion-proof and positive-break safety switch
with cULus, ATEX, IEC Ex approvals
Measurements (less levers)
H x W x D
92,2 mm x 24,2 mm x 29,4 mm
[3.63 in x 0.95 in x 1.16 in]
196,8 mm x 40 mm x 41 mm
[7.75 in x 1.57 in x 1.61 in]
154,2 mm x 44,5 mm x 72 mm
[6.07 in x 1.75 in x 2.84 in]
Temperature-25 °C to 85 °C [-13 °F to 185 °F]-25 °C to 50 °C [-13 °F to 122 °F]-40 °C to 70 °C [-40 °F to 158 °F]
Featuresmedium duty switch covers most common 1NC/1NO and 2NC applications key entry from top and frontpower-to-lock or power-to-unlock for key trap; override mechanism on cover; three knock out conduit openings for wiring flexibility (sides + bottom); optional LED indicator.extensive switching and actuating options; designed so even welded contacts will open and machine will stop in emergency with positive opening NC snap action contacts (direct mechanical linkage)


Safety Switches GKSafety Switches GKR
Serie24CE/ 924CEGKGKR/ L
Attributesminiature, compact die-cast zinc housing construction
with a wide variety of actuators
heavy duty metal body keyed interlock switch designed for large doors and cagesheavy-duty metal body solenoid trapped key interlock switch designed not to release until hazard has been removed; for large doors/ cages
Potential applicationssmall doors and apertureslarge, heavy door cage and gate applicationslarge, heavy door, cage and gate machine apps
Approvals24CE: CE; 924CE: UL, CE, SIL 3 capableUL, CSA, CE, S-mark, SIL 3 capableUL, CSA, CE, S-mark, SIL 3 capable
SealingIP66IP67; NEMA 1, 4, 12, 13IP68; NEMA 1, 4, 6P, 12, 13
Differentiatortough and rugged switch, designed to operate in harsh operating environmentsunique friction feature for key retention; rugged design withstands vibration, harsh environments, and provides long-term durability (tested 15 million cycles)rugged design withstands vibration, harsh
environments; provides long-term durability
(tested 15 million cycles)
Measurements (less levers)
H x W x D
49,0 mm x 40,0 mm x 16,0 mm
[1.93 in x 1.57 in x 0.63 in]
121,6 mm x 42 mm x 42,6 mm
[1.79 in x 1.652 in x 1.68 in]
149,0 mm x 110,0 mm x 48,8 mm
[5.85 in x 4.33 in x 1.92 in]
Temperature0 °C to 70 °C [32 °F to 160 °F]-25 °C to 85 °C [-13 °F to 185 °F]-25 °C to 85 °C [-13 °F to 185 °F]
Featuresflexible attachment with simple two screw mounting;
available pre-wired with choice of cable lengths or
connector fitted; side and bottom cable entry
multiple key (8 top or side entry) and lockout device options available; LED indicator; up to four contactssolenoid power-to-lock or power-to
unlock; key retain force 1000 N max;
multiple key and lockout devices; dual LED
indicator; available with key entry (4 face
orientations); up to 4 contacts; manual override


Safety Switches GSSSafety Switches GSS HingeSafety Switches CPS
Attributesrugged metal housing handles multiple broad applicationsmetal or plastic housing for access door
safety hinge applications
single/dual head cable pull designed to
provide emergency stop protection; often
used for exposed conveyor and assembly
Potential applicationsmedium/large doors and aperturesmedium/large doorsconveyor applications
Housingglass-filled polyester, zincglass-filled polyester, zinczinc
ApprovalsUL, CSA, CE, SIL 3 capableUL, CSA, CE, SIL 3 capableUL, CSA, CE, SIL 3 capable
SealingIP67; NEMA 1, 4, 12, 13IP67; NEMA 1, 4, 12, 13IP67; NEMA 1, 4, 12, 13
Differentiatorhighly visible red housing; snap action and slow action basic switcheshighly visible red housing; actuator head
may be rotated in 90° increments
rugged, sealed, large wiring cavity; indicators;
wide temperature tolerance; longest
span available (up to 500 feet/152m on dual
head 2CPS)
Measurements (less levers)
H x W x D
83,0 mm x 30,5 mm x 30,0 mm
[3.27 in x 1.20 in x 1.18 in]
83,0 mm x 30,5 mm x 30,0 mm
[3.27 in x 1.20 in x 1.18 in]
165,1 mm x 79,8 mm x 325,9 mm
[6.5 in x 3.14 in x 12.75 in]
Temperature-25 °C to 85 °C [-13 °F to 185 °F]-25 °C to 85 °C [-13 °F to 185 °F]-40 °C to 85 °C [-40 °F to 185 °F]
Featuresmultiple contact options (up to 4 MBB); full range of actuator heads and levers; reliable low energy switching; tested to 15 million operationslow profile design; available with 3 actuator styles (left, center, right); multiple contact options; reliable low energy switchingoptional hardware packs; heavy-duty
terminals: gold contacts; direct opening
action of NC contacts (up to 4 contacts);
LED status lights

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