Siemens 3SE5 Safety Interlock Switch, 2NC/1NO, Keyed , Metal

The SIRIUS 3SE5 position switches are designed to ensure that the safety mechanism on protective doors cannot be deactivated. Also the multiple mechanical coding of these interlock switches virtually eliminates the possibility of tampering. The separate actuator is mounted directly on the protective door and moves into the opening on the switch when the door is closed. Once the door is opened, the actuator is removed from the switch and the NC contacts open breaking the circuit safely and reliably.

5 directions of approach, from above and 4 x 90°
IP67 degree of protection
Protection up to Cat 4 (EN 954-1), Up to SIL 3 IEC 62061
Simple, fast wiring offers approx 20 to 25% reduction in connection time
ASIsafe electronics are now integrated into the enclosure for additional space saving
LED versions available for on-site diagnosis
Slow action contacts
Screw terminals

Actuators must be purchased separately.

This safety interlock switch is intended for mechanical safety applications. It features a robust metal enclosure measuring 110x40mm and includes a keyed lock mechanism for secure operation. The configuration consists of 2 normally closed (NC) contacts and 1 normally open (NO) contact, ensuring consistent performance in various environments. With an IP66/IP67 rating, it offers significant protection against dust and water ingress, making it suitable for industrial settings.

• Keyed lock enhances safety and prevents unauthorised access
• Metal housing provides durability in tough conditions
• IP66/IP67 rating protects against dust and water
• 2NC/1NO configuration offers versatile safety options
• Slow-action contacts minimise the risk of accidental triggering

• Safeguarding moving machinery
• Utilisation in automated assembly lines
• in hazardous areas requiring secure access
• Employment in emergency stop systems

Yes, it functions between -25°C and +60°C.

Yes, it features a flexible mounting design for multiple positions.

Interlock Switch