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SF2KR Series - Safety Key Selector Switches
SF2KR Series Safety Key Selector Switches
The SF2KR series safety key selector switches are installed in safety fences or industrial equipment doors to control operation of machines, offering additional safety during maintenance in potentially dangerous environments.
Main features
- Check lock/unlock status with the front solenoid operation indicator (lockable model: SF2KR-M)
- Various line-up of key release direction, N.C. contact powered location, and lock location depending on the general / lockable type
- Contact block option up to 4 contacts
: N.O. 1+N.C. 2, N.C. 3, N.O. 2+N.C. 2 - 10 different key types
- Sold separately
: Name plate (SF2KR-□-NP□)
: Contact block (SFEA-C□)
Operation Indicator
Various Operation Keys
Protection Rating
240 Different Models Available
The switches are available in various models including 4 types of key release direction, 3 types of N.C. contact powered location, and 10 types of keys depending on the general/lockable models for diverse applications.
| Lock type | Key release direction | N.C contact powered location | Lock location | Contact block | Key type |
|---|---|---|---|---|---|
| Gerneral type |  | | - | N.O.1 + N.C.2 N.C.3 N.O.2 + N.C.2 | Basic key & key numbers 1 to 9 |
 | | - | |||
| | - | |||
| | - | |||
| Lockable type | | | | ||
| | | |||
| | | |||
| | |
The above graph is only for a reference. Please refer to the model information below for details.
Key Lock Function Available
Key selector switches are available in single direction and bi-directional lock types with mechanical/solenoid release methods, preventing unintended mode switching during maintenance.
Front Operation Indicator
Front operation indicator (green LED) allows users to easily identify solenoid operation status.
Lock type models only : SF2KR-M□
Ensure Additional Safety with Shared Key
The same key can be used with other key selector switches within or outside the fence, offering additional safety. Operators can enter potentially dangerous areas while possessing the key, preventing key loss or entrapment within the hazardous area.
Example of system configuration for a pair of workers
Inside the fence (SF2KR-□)
Outside the fence (SF2KR-M□)
PR materials
Technical data
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