Schaltbau Snap-action switches, S847 series

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Schaltbau Snap-action switches, S847 series

Specifications

Electrical Data
Contact configuration	SPDT-DB (Form Zb) snap-action switch with double-break contacts, 4 terminals, positive opening operation, wiping action, and 2 galvanically isolated contact bridges
Conv. thermal current I_th EN60947	10 A at T = 85°C
Conv. thermal current I_th UL508	10 A at T = 85°C
Rated insulation voltage U_i EN60947	400 V
Rated insulation voltage U_i UL508	300 V
Pollution degree IEC 60947	PD 3
Pollution degree UL508	PD 3
Rated impulse withstand voltage U_imp	4 kV
Utilization category IEC 60947	AC-15, 230 VAC/1.5 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, IP60/00, IP67/00
Contact material	Silver or gold-plated silver
Short-circuit protection	10 A gL
Actuators, operating positions
Actuator	Push button, roller lever
Free position	8.85 ±0.15
Operating position	6.60 ±0.25
Release position	8.00 ±0.25
Total positive opening travel	4.20
Total travel position	< 3.90
Movement differential (between operating and release position)	1.4 (typical)
Mechanical data
Front mount	yes, front mounting by nut retainers M3
Ganging (side mount)	yes, side mount
Vibration resistance	30 g max. (10 … 500 Hz all directions, without aux. actuator at 0.1 ms max. opening time)
Shock resistance	30 g max., 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

Schaltbau Snap-action switches, S847 series

Snap-action switches with positive opening operation and wiping double-break contacts

S847 Series snap-action switches in modular design are available with three degrees of protection according to IEC 60529: IP40 (protected against electric shock), IP60 (dustproof), and IP67 (waterproof).
Due to their wiping double-break contacts as well as protection against dust, moisture and pollutants, S847 series switches are highly reliable even at low contact ratings. The switches are therefore also often used for handling low currents and voltages.

Features

Positive opening operation: Reliable interruption even in case of contact welding, in compliance with IEC 60947-5-1, Annex K
Double break contacts: High electrical rating due to solid contact bridge and double break contacts
Precision switch: High switching accuracy and resistance to shock and vibration
Self-cleaning contacts: Constantly low contact resistance ensures high contact reliability over the entire design life of the switch.
Sealed to: IP40, IP60 or IP67 in accordance with IEC 60529
Contact material: Silver or gold-plated silver