Mitsubishi Electric C Series Handling And Maintenance page 35

Clamp connection
When connected directly to a terminal, insert the solid or stranded wire
●
straight, then fasten the terminal screws.
Ring-type terminals and bars can also be connected.
For stranded wires, divided the strands for insertion, then fasten. Re-
●
tightening is necessary for stranded wires at initial connection in par-
ticular, as stress slackening takes place after fastening.
Remove wire insulation to the dimension illustrated below.
●
16mm
Connection with solderless terminal
Crimp after loosening strand of the connec-
●
tion wire and putting the core wires together.
Regular inspection and retightening are nec-
essary as the wires come loose as time goes.
● Where stranded wires of fine core such as the
wires for appliances are used, use bar type or
plate type solderless terminals.
3Insulation
(a) Insulation barrier
The insulation barriers are used to reinforce insulation between phases of circuit breaker terminals, and to prevent failure
caused by conductive foreign matter and dust. Be sure to use insulation barriers for the models of standard type.
To prevent problems, we are ready to mount the insulation barriers on the unit designated by you.
1. For the standard models, be sure to use insulation barriers unless some other
effective means are taken such as terminal cover.
2. To the models for which insulation barriers are packed together in both power
source side and load side, attach them to both sides.
3. To the models for which insulation barriers are packed together in one side only,
attach the barriers to arch discharge side (ON side) in either case of regular
connection and inverse connection.
MCCB
NF32-SW, NF63-CW
MB30-SW, MB50-CW
NF125-RGW, NF125-UGW, NF125-CW
NF63-ZCW, NF125-ZCW
BH(2P, 3P, 40A, 50A)
BH-P, BH-S, BH-PS
NF63-SW, NF63-HW, NF125-SW, NF125-HW
MB50-SW, MB100-SW
NF63-ZSW, NF63-ZHW, NF125-ZSW, NF125-ZHW
NF160-SW, NF160-HW, NF250-CW, NF250-SW
NF250-HW
NF125-SGW, NF125-HGW, NF125-RGW, NF125-UGW
NF160-SGW, NF160-HGW
NF250-SGW, NF250-HGW, NF250-RGW, NF250-UGW
MB225-SW, NF250-ZCW, NF250-ZSW, NF250-ZHW,
NF250-ZEW
NF400-CW, NF400-SW, NF400-SEW, NF400-HEW
NF400-REW, NF400-UEW(3P), NF400-ZCW, NF400-ZSW
NF400-ZEW
NF630-CW, NF630-SW, NF630-SEW, NF630-HEW,
NF630-REW, NF630-ZCW, NF630-ZSW NF630-ZEW
NF400-UEP(4P), NF800-CEW, NF800-SEW, NF800-HEW,
NF800-REW, NF800-SDW, NF800-UEW, NF800-ZEW
NF1000-SEW, NF1250-SEW, NF1250-SDW, NF1250-UR
NF1600-SEW, NF1600-SDW
33
Refrain from soldering or binding stranded
●
wires on the top end.
CAUTION
Applicable model
NV63-CW,
NV125-CW, NV125-RW
NV32-SW, NV63-SW, NV63-HW
NV125-SW, NV125-HW
NV250-CW, NV250-SW, NV250-HW
NV250-SEW, NV250-HEW, NV250-RW
NV400-CW, NV400-SW, NV400-SEW
NV400-HEW, NV400-REW
NV630-CW, NV630-SW, NV630-SEW
NV630-HEW
NV800-SEW, NV800-HEW
—
(One solid wire)
(Connection with ring-type terminal )
Fasten carefully so that insulating materials of the
●
wire is not caught.
ELCB
(Two solid wires)
(Thick stranded wire )
Insulation barrier
Arc discharge
side
(Those with circle are optional.)
Connecting method
Front
Rear Flush
— —
Packed together
— —
as the standard
practice
Packed together
as the standard — —
practice
Packed together
as the standard
practice
Packed together
as the standard
practice
Packed together
— —
as the standard
practice
Packed together
— —
as the standard
practice
Plug-in
—
—
Packed together
as the standard
practice
Packed together
as the standard
practice
Packed together
as the standard
practice
—