Interface modules create the connection between control and load
Coupling relay KRA-F
METZ CONNECT interface modules are the ideal separation between logic and load in control and automation technology. The coupling relay series KRA-F is designed for DIN rail mounting and equipped with innovative spring clamp technology. In addition to the compact housing design and a front height of 45 mm to mount in any electrical distribution cabinet, they are equipped with a manual control facility for manual operation. The operating state can be signalled via feedback contact to a control unit.
When servicing is required or when starting up a control unit, the relevant consumers can be checked on the control unit before switching. In case of a failure of the control unit, an emergency operation can be maintained by means of the manual control. This helps avoid long downtimes during the installation and increases security.
![Innovative connectivity](/file/8a8a80ea7fb5a12501800844a0fd43f5.en.0/innovative_anschlusstechnik.png?derivate=usage%3Dposter%2Cwidth~900)
Innovative connectivity
- easy wiring without tools by innovative spring clamp technology (push-in system)
![Intuitive handling](/file/8a8a80ea7fb5a12501800844a0fd43f5.en.0/intuitive_bedienung.png?derivate=usage%3Dposter%2Cwidth~900)
Intuitive handling
- easy connection of contacts A1 and/or A2 by a 10-pole connecting bridge
- no additional wiring work
![Manual control](/file/8a8a80ea7fb5a12501800844a0fd43f5.en.0/handbedienebene.png?derivate=usage%3Dposter%2Cwidth~900)
Manual control
- manual function test in case of initial setup and service purposes before the control unit is switched on
- feedback contact for signalling and display at the control unit
- LED for status indication of the switch position
![Compact design](/file/8a8a80ea7fb5a12501800844a0fd43f5.en.0/kompakte_bauform.png?derivate=usage%3Dposter%2Cwidth~900)
Compact design
- with a width of 11.2 mm, only a minimum amount of space is needed in the electrical cabinet
- front height of 45 mm to mount in any electrical installation distributor
![Coupling relay KRA-SRA-F10/21](/file/8a8a80ea7fb5a12501800844a0fd43f5.en.0/11071013.jpg?derivate=usage%3Dposter%2Cwidth~900)
Application examples
![Valves](/file/8a8a80ea7fb5a12501800844a0fd43f5.en.0/valves.png?derivate=usage%3Dposter%2Cwidth~900)
![Electric motors](/file/8a8a80ea7fb5a12501800844a0fd43f5.en.0/electric_motors.png?derivate=usage%3Dposter%2Cwidth~900)
![Pumps](/file/8a8a80ea7fb5a12501800844a0fd43f5.en.0/pumps.png?derivate=usage%3Dposter%2Cwidth~900)
![Fans](/file/8a8a80ea7fb5a12501800844a0fd43f5.en.0/fans.png?derivate=usage%3Dposter%2Cwidth~900)
![Application examples](/file/8a8a80ea7fb5a12501800844a0fd43f5.en.0/applications.jpg?derivate=usage%3Dposter%2Cwidth~1200)
Product overview