S834 snap-action switch – Enabling switch with positive opening
Single or double pole three-position switch for hand-held control units of industrial robots
S834 T1G2a 090 Single pole enabling switch
S834 T1G2a 100 Double pole enabling switch
When working, the user must keep the enabling switch on the hand-held control unit in the centre position. In emergencies, he/she will release the switch or press through it completely (panic response). In both instances, the electrical circuit is opened and the machine stops.
Features
Three-position switch: OFF-ON-OFF
Neutral position: OFF.
Working position: ON
End position: OFF.
No reactivation when returning from the end position to the neutral position.
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.
Self-cleaning contacts
The moving contact rubs against the fixed contact during every actuation. This removes corrosion and combustion residue and reduces contact resistance.
Dimensions 16.5 x 22.5 x 10.4 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:
Specifications
Electrical Data
| Contact configuration | Enabling switch, 1 pole, OFF-ON-OFF |
| 2.5 A at T = 85°C | |
| 250 V | |
| Pollution degree IEC 60947 | PD 1 |
| 1.5 kV | |
| Utilization category IEC 60947 | DC-12, 48 V DC/1 A / DC-13, 48 V DC/0.3 A |
| IP50/IP00 | |
| Contact material | Silver |
| Short-circuit protection | 1 A gG |
Actuators, operating positions
| Actuator | Push button (Standard) |
| Free position | 30.9 ±0.2 |
| Arbeitslage | 28.28 +0.295 -0.12 |
| Total travel position | 24.9 +0.25 -0.2 |
Mechanical data
| Front mount | --- |
| Ganging (side mount) | PCB mounting styles solder/press |
| Housing material | PC, green, transparent |
| Mechanical endurance | 300,000 operationto working position; 70,000 operations to final position |
| Temperature range | 0 °C ... +55 °C |
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