093
fuses, Travel Switches, Universal Change-over Switches, Connection Terminals
Load Switch
P
-
4. Technical data
Table 1 Main technical parameters
Table 2 Main technical parameters of HH mechanical assembly
Model
Model
Rated working current Ie (A, AC-23A)
Rated working current Ie
(A, AC-23A)
Rated short-time withstand current Icw,1s (kA)
Rated short-time withstand current Icw,1s (kA)
Rated short-circuit making capacity Icm(kA)
Number of poles
Number of poles
Wiring capacity (hard wire,cross-sectional area)(mm
2
)
Wiring capacity (hard wire,cross-sectional area)(mm
2
)
Specification
IM2 mechanical combination
system: use 6-8 pole combination
IM31 mechanical interlocking
structure: for 3/4 pole Ⅰ- Ⅰ+ Ⅱ- Ⅱ
IM32 mechanical interlocking
mechanism: used for 3/4 pole Ⅰ-O- Ⅱ
conversion
Tightening torque of terminal screws (N.m)
Tightening torque of terminal screws (N.m)
Electrical life (times)
Electrical life (times)
Mechanical life (times)
Mechanical life (times)
Protection level
Frame grade NF2-40 NF2-80
800
800
8
8
1.5
6、8
2.5~35
2.5~2.8
2000
100000
25
63
63415V
500V
690V
63
40
25
25
25
32
80
80
63
40
32
25
25
1.26 1.5
2.1
3P、3P+N
2000
100000
IP20，IP65（With protective shell）
2.75
3.9
1.8
1.5~16
2.5~35
2.5~2.8
3.5~4
10~70
1.2~1.4
40
100
80
63
40
63
63
63
63
40
63
63
40
80
80
80
63
40
80
63
40
100
100
80
63
40
100
80
63
125
63
63
63
40
80
80
63
40
100
80
63
40
125
100
63
40
25
25
NF2-125
Rated insulation voltage Ui (V)
Rated insulation voltage Ui (V)
Rated impulse withstand voltage Uimp (kV)
Rated impulse withstand voltage Uimp (kV)
Conventional free air heating current Ith (A)
Conventional free air heating current Ith (A)
NF2
NF2-HH (mechanical combination)
5.1 The switch is mainly composed of a handle, an operating mechanism, a contact system, a shell, and accessories. The operating
mechanism adopts spring energy storage, the connection and breaking speed has nothing to do with the speed of the operating
handle, ensuring the connection and breaking capacity of the product; the contact system adopts a double-breakpoint bridge
structure; the wiring method adopts the wire frame method; the installation method adopts the front panel Installation (rail
installation, screw installation), panel installation; the shell is made of flame-retardant reinforced polyamide material, which has
good flame-retardant performance, dielectric performance and carbonization resistance.
5.2 The switch 3-pole body adds some standard accessories and can be combined into a 6/8-pole load switch or 3/4-pole transfer
switch, and a neutral pole, grounding pole or auxiliary contact can also be added;
5. Structural features and working principle
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