The breaker lock plate is used to prevent the breaker from being turned on or off.
ABB
ABB Electronic time Delay T1..T6-XT1..XT4 220..250Va
ABB Motor Operator 220v. XT1,XT3
ABB Mechanical interlock XT5
ABB E1.2..E6.2-XT7-XT7M Shunt Opening 220-240Vac
ABB AUX-C 2Q+1SY 250Vac/dc XT1...XT6 F/P
ABB AUX-C 1Q+1SY 250Vac/dc XT1...XT6 F/P
ABB AUX-SA-C 1S51 250Vac/dc XT2-XT4...XT6F/P
ABB Mechanical Interlock XT1
ABB RHE XT1-XT3 F/P STAND. RETURNED
ABB Auxiliary Contact XT7-XT7M 4Q 400V
ABB RHE XT7 F/W STAND. RETURNED
ABB XT1..XT4 Undervoltage releases 220..240Vac.