2TLC172245M0201, rev. B
9
www.abb.com/jokabsafety
2013-04-22
MKey8ER - Standard version with escape release
The version of MKey8 with die cast housing and spring lock with escape release. The switch has a contact block
configuration of 2NC + 2NC with positive force disconnection contacts. One pair closes when the actuator key is
pushed into the head (2NC). The other pair closes when the locking mechanism is in the locked position (2NC).
There are two NO auxiliary circuits, 1NO circuit that indicates guard open and 1NO circuit that indicates lock status.
The MKey8ER has a manual release button at the rear of the housing. This can be used where the risk
assessment for the application permits, a non latching manual escape of the switch lock in case of emergency. The
switch must be mounted so that the release button is reachable from inside the active guard area. Press and
holding the red button will release the lock mechanism and lock monitoring contacts while the guard can be pushed
open.
1. Press and hold
2. Open the guard door
