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Table 3 Main technical performance indicators (completed)
Shell frame level rated
current Inm (A)
400
630
800
Product model
H8M-
400C
H8M-
400S
H8M-
400H
H8M-
400U
H8M-
630C
H8M-
630S
H8M-
630H
H8M-
630U
H8M-
800C
H8M-
800S
H8M-
800H
H8M-
800U
Rated current In (A)
250,300,350,400
400,500,630
630,700,800
Number of poles
3 4 3 4
3
3
3 4 3 4
3
3
3 4 3 4
3
3
Rated insulation
voltage Ui (V)
AC 800
AC 800
AC 800
Rated impulse
withstand voltage Uimp
(kV)
8
Flashover distance
(mm)
≤100 (0) *
≤100 <0) *
≤100 (0) *
Rated
ultimate/
service
short-circuit
breaking
capacity
Icu/Ics
(kA)
690 V
10/10 10/10 15/10 35/35 10/10 15/15 20/15 35/35 10/10 15/15 20/15 35/35
400 V
50/50 75/75 100/
100
125/
125 50/50 75/75
100/
100
125/
125 50/50 75/75
100/
100
125/
125
Operation
performance
(times)
Energizing
7,500
7,500
7,500
De-
energizing
10,000
10,000
10,000
Outline
dimensions (mm)
a 140 185 140 180 140
140 210 280 210 280 210
210 210 280 210 280 210
210
b
257
297
275
322
275
322
c
103
200
103
200
103
200
Installation
dimensions (mm)
A
44
70
70
B
194
234
243
290
243
290
Φ
7
7
7
*
The flashover distance, if zero, shall be indicated when ordering.
5.2 See Table 4 (for power distribution) and Table 5 (for motor) for the
overcurrent protection characteristics.
Table 4 Overcurrent protection characteristics of circuit breakers for
power distribution
Rated current In
(A)
Thermal release (ambient tempe40°C)
Operating current of
electromagnetic release
(A) [Note]
1.05 In non-operating time (h)
(initial state: cold state)
1.30 In operating time (h)
(initial state: thermal state)
≤63
>1
≤1
(10±2)In
>63
>2
≤2
