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
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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:

(d34_en.pdf)

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Specifications

Electrical Data
Contact configurationEnabling switch, 1 pole, OFF-ON-OFF
Conv. thermal current Ith EN609472.5 A at T = 85°C
Rated insulation voltage Ui EN60947250 V
Pollution degree IEC 60947PD 1
Rated impulse withstand voltage Uimp1.5 kV
Utilization category IEC 60947DC-12, 48 V DC/1 A / DC-13, 48 V DC/0.3 A
IP rating: contacts/terminalsIP50/IP00
Contact materialSilver
Short-circuit protection1 A gG
Actuators, operating positions
ActuatorPush button (Standard)
Free position30.9 ±0.2
Arbeitslage28.28 +0.295 -0.12
Total travel position24.9 +0.25 -0.2
Mechanical data
Front mount---
Ganging (side mount)PCB mounting styles solder/press
Housing materialPC, green, transparent
Mechanical endurance300,000 operationto working position; 70,000 operations to final position
Temperature range0 °C ... +55 °C

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Snap-action switch S834