The breaker lock plate is used to prevent the breaker from being turned on or off.
ABB
ABB XT5..XT6 Shunt Opening releases 220..240Vac
ABB RHD XT1-XT3 F/P STAND. DIRECT
ABB Auxiliary Contact XT7 1SY 400V
ABB RHD XT7 F/W STAND. DIRECT
ABB Electronic time Delay E1/6,E2.2,XT7,T8 220/250V.
ABB AUX-C 1Q+1SY 250Vac/dc XT1...XT6 F/P
ABB Front Flange-FLD XT6 F/P (Padlock)
ABB XT1..XT4 Undervoltage releases 220..240Vac.
ABB RHE XT1-XT3 F/P STAND. RETURNED
ABB Motor Operator 220v. XT1,XT3
ABB AUX-C 2Q+1SY 250Vac/dc XT1...XT6 F/P
ABB Mechanical interlock XT5