Mitsubishi Electric C Series Handling And Maintenance page 70

(3) Handle lock (HLN, HLF or HL-S)
The handle locks is a device that lock ON or OFF the handle of the circuit-breaker. Users can
safely use their lock because the circuit-breaker trips when an overcurrent flows therethrough even
if the handle is locked into ON position. There are two types of locks: HLN and HLF which are used
as mounted on the handle and HL-S which is used as fixed on the cover of the circuit-breaker.
How to use:
The wiring work shall be performed with the master circuit-breaker OFF even if the unit is
locked into OFF position. Since an electric shock is to be apprehended, always confirm that
there is no current flowing before proceeding to the wiring.
1 Never try to trip the circuit-breaker by trip button with the circuit-breaker locked into OFF position.
Otherwise, the internal mechanism may be broken.
2 The padlock to be used shall be that which is commercially available with the nominal dimensions as
shown in the table on the right hand.
Handle
3
2
1
Lock cover
(Case of HL)
CAUTION
Padlock
Lock plate
Dimensions of padlock (mm)
Applicable type
NF250-A frame and below,
NV250-A frame and below
NF400-A frame and above,
NV400-A frame and above
NF2000-S and above
✽ A:35, B:19, and C:5 for HL-S
A
B
(Nominal dimensions)
14
25
✽
✽
22
40
✽
✽
Standard ones in the same package
70
C B
A
C
4
✽
5.5
✽
68