Schaltbau Snap-action switch S804

S804 Snap-action switch - microswitch for medium & higher power ranges as a version of the S800 with connections on the side and changeover contact with a contact bridge and positive opening

S804 b

Snap-action switch S804 with pushbutton and connections on the side

The S804 snap-action switch offers the switch mechanism of the S800 series in another design – with connections on the side. The mechanical and electrical properties are identical. As with the S800, this microswitch switches medium to high power ranges; the break contacts are secured with a mechanical positive opening. The S804 is therefore suitable for safety applications, such as the monitoring of positions and end positions.

Features

Changeover contact with a solid 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).

Continuous thermal current up to 10 A; disconnecting medium to high power ranges

A contact bridge spreads the breaking capacity over two contact points. The contact material is silver. For the switching of high direct currents, we recommend blow magnets for preventing electric arcs (optional).

Break contacts with positive opening

If the break contacts fuse in the event of a short circuit, the catch spring can no longer open. It is nevertheless opened reliably via the lever of the positive opening. This is a positive opening as outlined in DIN EN 60947-5-1, annex K.

Shock resistance 30 g, vibration resistance 80 g

The switch mechanism of this microswitch has been designed to be especially robust. Catch springs and return springs are designed so that the switching process works reliably even in the event of shocks and vibrations.

Dimensions 36 x 30 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:

(d20_en.pdf)

Specifications

Electrical Data
Contact configuration SPDT-DB (Form Za) snap-action switch with double-break contacts,
4 terminals, and positive opening operation
Conv. thermal current Ith EN60947 10 A at T = 85°C
Conv. thermal current Ith UL508 5 A at T = 85°C
Rated insulation voltage Ui EN60947 400 V
Rated insulation voltage Ui UL508 300 V
Pollution degree IEC 60947 PD 3
Pollution degree UL508 PD 3
Rated impulse withstand voltage Uimp 4 kV
Utilization category IEC 60947 AC-15, 230 VAC/3.0 A / DC-13, 110 VDC/1.0 A
Utilization category UL508 240 V AC/1.5 A / DC 120 VDC/1.0 A (General Purpose)
IP rating: contacts/terminals IP40/IP00
Contact material Silver
Short-circuit protection 6 A gL
Actuators, operating positions
Actuator Push button
Free position 13.35 ±0.15
Operating position 11.10 ±0.35
Release position 12.30 ±0.35
Total positive opening travel 10.35
Total travel position 10.15 min.
Movement differential (between operating and release position) 1.30 (typical)
Mechanical data
Front mount
Ganging (side mount) yes, side mount
Vibration resistance 30 g (10 … 500 Hz all directions, without aux. actuator at 0.1 ms max. opening time)
Shock resistance 80 g, half sinus (without aux. actuator at 0.1 ms max. opening time)
Housing material PC, green transparent
Mechanical endurance 10 million cycles min.
Temperature range -40 °C … +85 °C
Note Data 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

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