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Schaltbau Snap-action switches, S850 series
Schaltbau Snap-action switches, S850 series
Technische Daten
| Electrical Data |
|
| Contact configuration |
Double NC contact switch with 4 terminals, positive opening operation, wiping action, and 2 galvanically isolated contact bridges |
|
|
10 A at T = 85°C |
|
|
5 A at T = 85°C |
|
|
400 V |
|
|
300 V |
| Pollution degree IEC 60947 |
PD 3 |
| Pollution degree UL508 |
PD 3 |
|
|
4 kV |
| Utilization category IEC 60947 |
AC-15, 230 VAC/1.5 A / DC-13, 24 VDC/1.5 A |
| Utilization category UL508 |
240 V AC General Purpose / 4 A |
|
|
IP40/IP20 |
| Contact material |
Silver or gold-plated silver |
| Short-circuit protection |
10 A gG |
| Actuators, operating positions |
|
| Actuator |
Phush button, roller lever |
| Free position |
8.85 ±0.15 |
| Operating position |
6.60 ±0.25 |
| Release position |
7.80 ±0.25 |
| Total positive opening travel |
5.80 |
| Total travel position |
< 5.65 |
| Movement differential (between operating and release position) |
1.20 (typical) |
| Mechanical data |
|
| Front mount |
yes, front mounting by nut retainers M3 |
| Ganging (side mount) |
yes, side mount |
| Vibration resistance |
15 g (10 … 500 Hz all directions (without aux. actuator at 0.1 ms max. opening time) |
| Shock resistance |
30 g, half sinus (without aux. actuator at 0.1 ms max. opening time) |
| Housing material |
PC, green, transparent |
| Mechanical endurance |
1.5 million cycles min. |
| Temperature range |
-55°C ... +85°C |
| Note |
Data valid for new switches with silver contacts |
Schaltbau Snap-action switches, S850 series
Schaltbau S850 Series snap-action switches integrate two safety switches in one housing.
Crucial for the development of the double NC contact switch was the standard ISO 13849-1, which also forms the basis of the new Machinery Directive of the European Union. To meet the safety requirements of the directive , it will become necessary that the safety-related parts of control systems for machines and plant are designed to be fully redundant. With the S850 switch Schaltbau offers a favourably priced solution for designers of control systems who want to step up the safety level without the need to invest in additional hardware, installation and programming of equipment.
Features
- Positive opening operation : Reliable interruption of both circuits even after contact welding, in compliance with IEC 60947-5-1, Annex K
- Double NC contacts: Safety switch featuring two galvanically isolated circuits in one housing. Used for applications complying with ISO 13849-1.
- Precision switch: High switching accuracy and resistance to shock and vibration
- Wiping contacts : Continuous low contact resistance ensures high contact reliability over the entire design life of the switch
- Sealed to: IP40 in accordance with IEC 60529
- Contact material: Silver or gold-plated silver
Applications
- Safety limit switches in control circuits and systems, e.g. in NC drives, PLCs and computer controls
- Limit switches for machine and plant control systems
- Limit switches for vehicles, e.g. in door controls
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