Snap-action switch S814 – Microswitch for a stack assembly

Changeover contact with a contact bridge, self-cleaning mechanism and pass-through actuating plunger

S814 b Snap-action switch with pass-through actuating plunger and connections on the side

The snap-action switch S814 is a diverse microswitch for medium and low power ranges. The feature is the plunger, which moves through the housing from the top downwards when actuated. This means two S814s can be mounted on top of each other in order to trigger two switching processes with one actuation. The S814 snap-action switch has self-cleaning contacts.


Changeover contact with a contact bridge.

Microswitch with a contact bridge which is guided by a plunger. When this snap-action switch is actuated, the bottom contact pair is opened (connections 1 and 2) and the top one is closed (connections 3 and 4).

Self-cleaning contacts

In every switching process, the contact bridges rub in a defined fashion on the V-shaped fixed contacts and remove corrosion and combustion residue. Permanently low contact resistances ensure a high level of contact reliability throughout the service life.

Reliable switching of low currents

With self-cleaning silver contacts, small currents can be connected reliably and frequently. In chemically aggressive environments and with low switching frequencies, we recommend gold contacts.

Dimensions 36 x H x 22 mm (L x H x W)

This is the maximum dimensions of the housing. The dimensions of the actuator and of the connections must be added. For all dimensions and drawings please refer to the following product catalogue:



Mechanical data
Front mount---
Ganging (side mount)yes, side mount
Vibration resistance20 g (10 … 500 Hz all directions, without aux. actuator at 0.1 ms max. opening time)
Shock resistance50 g, half sinus (without aux. actuator at 0.1 ms max. opening time)
Housing materialPC, green transparent
Mechanical endurance10 million cycles min.
Temperature range-40 °C ... +85 °C
Actuators, operating positions
ActuatorPush button
Free position12.6 ±0.2
Operating position11.6 ±0.2
Release position12.1 ±0.2
Total positive opening travel---
Total travel position10.6 min.
Movement differential (between operating and release position)0.5 (typical)
Utilization category IEC 60947AC-15, 230 VAC/1.0 A / DC-13, 60 VDC/0.5 A
Utilization category UL508240 V AC/1.5 A / DC 120 VDC/1.0 A (General Purpose)
IP rating: contacts/terminalsIP40/IP00
Contact materialSilver or gold
Short-circuit protection10 A gL
Electrical Data
Contact configurationSPDT-DB (Form Za) snap-action switch with double-break contacts and 4 terminals
Conv. thermal current Ith EN6094710 A at T = 85°C
Conv. thermal current Ith UL5085 A at T = 85°C
Rated insulation voltage Ui EN60947250 V
Rated insulation voltage Ui UL508300 V
Pollution degree IEC 60947PD 3
Pollution degree UL508PD 3
Rated impulse withstand voltage Uimp2.5 kV
NoteData valid for new switches with silver contacts

Related Downloads

Catalogue D20 – Snap-action switches S800, S804, S814, S820
Changeover switches with double-break contacts and positive opening operation
Safety instructions snap-action switches
Snap-action switches S800 / S804 / S814 / S818 / S819 / S820 / S826 / S834 / S840 / S845 / S846 / S847 / S850 / S870 / S880 / S926 / S947 / S970
Safety instructions snap-action switches / Supplementary details
Snap-action switches S800 / S804 / S814 / S818 / S819 / S820 / S826 / S834 / S840 / S845 / S846 / S847 / S850 / S870 / S880 / S926 / S947 / S970
Manual SE-M
Snap-action switches S800 / S804 / S814 / S818 / S819 / S820 / S826 / S840 / S845 / S846 / S847 / S850 / S870 / S880 / S926 / S947 / S970 — Installation and Maintenance Instructions
/en/products/snap-action-switches/thank-you/Snap-action switch S814Snap-action switches

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