Schmersal Inc. Datasheets for Limit Switches

Limit switches are electromechanical or solid state devices that require the physical contact of an object with the switch’s actuator to make the contacts change state.
Limit Switches: Learn more

Product Name Notes
EFR
1 Actuating planes cable ducts at bottom side Thermoplastic enclosure Contact pin in actuator bridge transparent cover Self-cleaning through the frictional mouvement of the contact bridges Protection class IP20 double-break...
1 Actuating planes cable ducts bottom side and rear Thermoplastic enclosure Contact pin in actuator bridge transparent cover Self-cleaning through the frictional mouvement of the contact bridges Protection class IP20...
1 Actuating planes without cable ducts Thermoplastic enclosure Contact pin in actuator bridge transparent cover Self-cleaning through the frictional mouvement of the contact bridges Protection class IP20 double-break switch fixing...
1 Cable entry M 20 x 1.5 Thermoplastic enclosure one-side operation / wire up to 10 m long Position indicator Large wiring compartment Twisting of towing eye not possible One...
1 Cable entry M20 Thermoplastic enclosure vertical mounting Large wiring compartment Twisting of towing eye not possible wire pull detection 2 Contacts
2 cable entries M20 Continuous adjustment of lever position 360° Metal enclosure 2 Contacts 106 mm x 99 mm x 63 mm ( basic component) Suitable for heavy duty
2 cable entries M20 Metal enclosure 2 Contacts 106 mm x 99 mm x 63 mm ( basic component) Suitable for heavy duty
2 cable entries additional nameplate with date of manufacture in the cover Metal enclosure 4 Contacts 118 mm x 174 mm x 64 mm
2 cable entries Metal enclosure 4 Contacts 118 mm x 174 mm x 64 mm
3 cable entries M 20 x 1.5 Ex-Zone 22 Metal enclosure Release push button Position indicator Robust design Large wiring compartment Twisting of towing eye not possible External watertight collar...
3 cable entries M 20 x 1.5 Metal enclosure one-side operation / wire up to 50 m long Position indicator Robust design Large wiring compartment Twisting of towing eye not...
Actuation bottom Thermoplastic enclosure Contact pin in actuator bridge 2 actuating planes Protection class IP20 Self-cleaning through the frictional mouvement of the contact bridges
Actuation cover-side Thermoplastic enclosure Contact pin in actuator bridge 2 actuating planes Protection class IP20 Self-cleaning through the frictional mouvement of the contact bridges
Cast iron enclosure, 2K paint Exterior parts made of stainless steel 2 switching angles (prewarning, deactivation)
connector plug M12, bottom Slow action 1 Normally open contact (NO) / 1 Opener (NC) Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
connector plug M12, bottom Snap action 1 Normally open contact (NO) / 1 Opener (NC) Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
connector plug M12, bottom Snap action 1 Normally open contact (NO) / 2 Opener (NC) connector plug M12, 8-pole Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
connector plug M12, right Slow action 1 Normally open contact (NO) / 1 Opener (NC) plastic roller Ø 9,5 mm Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
connector plug M12, right Slow action 1 Normally open contact (NO) / 1 Opener (NC) Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
connector plug M12, right Snap action 1 Normally open contact (NO) / 1 Opener (NC) Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
connector plug M12, right Snap action 1 Normally open contact (NO) / 2 Opener (NC) connector plug M12, 8-pole Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
Ex-Zone 1 and 21 Metal enclosure Good resistance to oil and petroleum spirit 40,5 mm x 76 mm x 38 mm Actuator heads can be repositioned by 4 x 90°
Ex-Zone 1 and 21 Metal enclosure wire pull and breakage detection Protection class IP66, IP67 Central connection terminal Mechanical switching position indication two-side operation / wire up to 2 x...
Ex-Zone 1 and 21 only for positioning tasks Metal enclosure Good resistance to oil and petroleum spirit 40,5 mm x 76 mm x 38 mm Actuator heads can be repositioned...
Ex-Zone 21 and 22 Metal enclosure wire pull and breakage detection Protection class IP66, IP67 Central connection terminal Mechanical switching position indication two-side operation / wire up to 2 x...
Explosion protection for ATEX Zones 2 and 22 Metal enclosure Good resistance to oil and petroleum spirit 40,5 mm x 76 mm x 38 mm Actuator heads can be repositioned...
Gold-plated solid siver contacts
Gold-plated solid siver contacts only for positioning tasks Metal enclosure Wide range of alternative actuators Good resistance to oil and petroleum spirit 40,5 mm x 76 mm x 38 mm...
light alloy die-castingenclosure for suspended mounting
Metal enclosure with impact-resistant plastic hood Various cam shapes for varying switch travel Available for easy adjustment of switching points by setting disk cams from front
Metal enclosure 2 Contacts 106 mm x 99 mm x 63 mm ( basic component) Suitable for heavy duty
Metal enclosure Design to EN 50047 Quick connection technology as connection terminals rotated by 45° cable entry 1 x M20 x 1,5
Metal enclosure Good resistance to oil and petroleum spirit 66,7 mm x 76 mm x 38 mm Actuator heads can be repositioned by 4 x 90° Including Ex-certified screwed cable...
Metal enclosure One-side operation / wire up to 25 m long
Metal enclosure Quick connection technology as connection terminals rotated by 45° cable entry 1 x M20 x 1,5 Design to EN 50041
Metal enclosure Robust design
Metal enclosure Wide range of alternative actuators Good resistance to oil and petroleum spirit 40,5 mm x 76 mm x 38 mm Actuator heads can be repositioned by 4 x...
Pre-wired cable bottom, 2 Slow action 1 Normally open contact (NO) / 1 Opener (NC) 1.0 µm Gold-plated contacts Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
Pre-wired cable bottom, 2 Slow action 1 Normally open contact (NO) / 1 Opener (NC) Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
Pre-wired cable bottom, 2 Snap action 1 Normally open contact (NO) / 1 Opener (NC) plastic roller Ø 9,5 mm Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
Pre-wired cable bottom, 2 Snap action 1 Normally open contact (NO) / 1 Opener (NC) Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
Pre-wired cable bottom, 2 Snap action 1 Normally open contact (NO) / 1 Opener (NC) with latching Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
Pre-wired cable bottom, 2 Snap action 1 Normally open contact (NO) / 2 Opener (NC) Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
Pre-wired cable bottom, 2 Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
Pre-wired cable bottom, 2 with latching Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
Pre-wired cable right, 2 m Slow action 1 Normally open contact (NO) / 1 Opener (NC) Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
Pre-wired cable right, 2 m Slow action 1 Normally open contact (NO) / 2 Opener (NC) Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
Pre-wired cable right, 2 m Snap action 1 Normally open contact (NO) / 1 Opener (NC) Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
Pre-wired cable right, 2 m Snap action 1 Normally open contact (NO) / 1 Opener (NC) with latching Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
Pre-wired cable right, 2 m Snap action 1 Normally open contact (NO) / 2 Opener (NC) Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
Single wire entry (1 cable per clamp) Thermoplastic enclosure Contact pin in actuator bridge 1 Actuating planes Protection class IP20 Inseparable cover and enclosure Enclosure with mounting slots Self-cleaning through...
Single wire entry with Connecting funnel 1 cable per clamp Actuation bottom Thermoplastic enclosure Contact pin in actuator bridge 2 actuating planes Protection class IP20 Inseparable cover and enclosure Enclosure...
Single wire entry with Connecting funnel 1 cable per clamp Actuation cover-side Thermoplastic enclosure Contact pin in actuator bridge 2 actuating planes Protection class IP20 Inseparable cover and enclosure Enclosure...
Single wire entry Thermoplastic enclosure Contact pin in actuator bridge 1 Actuating planes Protection class IP20 transparent cover fixing screws M4 undetachable, captive Fitting dimensions suitable for AZ 06x Self-cleaning...
Single wire entry Thermoplastic enclosure Contact pins in the switch 1 Actuating planes Protection against accidental contact with additional wall transparent cover fixing screws M4 undetachable, captive Fitting dimensions suitable...
Single-conductor entry with strain relief Thermoplastic enclosure Contact pin in actuator bridge 1 Actuating planes Protection against accidental contact with additional wall transparent cover fixing screws M4 undetachable, captive Fitting...
Single-conductor entry with strain relief Thermoplastic enclosure Contact pin in actuator bridge 1 Actuating planes Protection class IP20 transparent cover fixing screws M4 undetachable, captive Fitting dimensions suitable for AZ...
Single-conductor entry with strain relief Thermoplastic enclosure Contact pins in the switch 1 Actuating planes Protection against accidental contact with additional wall transparent cover fixing screws M4 undetachable, captive Fitting...
Slow action 1 Normally open contact (NO) / 2 Opener (NC) Pre-wired cable right, 5 m Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
Slow action 1 Normally open contact (NO) / 2 Opener (NC) Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
Snap action 1 Normally open contact (NO) / 1 Opener (NC) Connecting cable bottom, 5 m Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
Snap action 1 Normally open contact (NO) / 1 Opener (NC) Pre-wired cable right, 5 m Thermoplastic enclosure Symmetric enclosure Protection class IP66, IP67
thermoplastic enclosure with foldable latching cover small body vertical mounting Twisting of towing eye not possible Progress function (ballpoint pen principle) LED version available
Thermoplastic enclosure Contact pin in actuator bridge 1 Actuating planes transparent cover Self-cleaning through the frictional mouvement of the contact bridges Protection class IP20 double-break switch fixing screws M4 Pozidriv...
Thermoplastic enclosure Contact pin in actuator bridge 2 actuating planes Protection class IP20 Self-cleaning through the frictional mouvement of the contact bridges
Thermoplastic enclosure Double-insulated Long life 52 mm x 75 mm x 30 mm Universal coding Large wiring compartment High level of contact reliability with low voltages and currents Slotted holes...
Thermoplastic enclosure Protection class IP20 Contact pin in actuator bridge Self-cleaning through the frictional mouvement of the contact bridges Enclosure with centered slotted hole and anchoring element 30mm x 38mm...
with brass roller Ex-Zone 1 and 21 1 Cable entry M 20 x 1.5 Metal enclosure 40,5 mm x 76 mm x 38 mm Good resistance to oil and petroleum...
with brass roller Explosion protection for ATEX Zones 2 and 22 Metal enclosure Good resistance to oil and petroleum spirit 40,5 mm x 76 mm x 38 mm Mounting details...
with latching Metal enclosure One-side operation / wire up to 25 m long