Products Mi Power Distribution Boards up to 630 A Circuit breaker box

Circuit breaker box

Mi 7434

Circuit breaker 400 A
3-pole PE + N
connection: M 10 or VA 400 + Mi VS 400
(for terminal technology refer to index technical data)
with PE and N for copper conductors
MCCB with overload and short-circuit release
lid fasteners for tool operation
lockable handle
with circuit-breaker in accordance with IEC 60947-2
material: PC (polycarbonate)
protection class: II
colour: grey, RAL 7035

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PDF data sheet

Technical Data
Drawings
Accessories
Technic + Documents

rated voltage of the device	U_n = 690 V a.c.
rated current of the device	400 A
rated ultimate short-circuit breaking capacity	I_cs = I_cu = 10 kA / 690 V a.c. I_cs = I_cu = 36 kA / 415 V a.c.
Setting range overload release	160 - 400 A
rated current of a circuit	I_nc = 320 A for design verification of permissible temperature rise according to IEC 61439-1, Section 10.10.4
number of circuits	1
width	300 mm
height	600 mm
depth	262 mm
weight	10,69 kg

Dimension drawing
Box walls
DA 300

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Terminal for direct connection up to 400 A

max. 300 mm²
Mi CB 10

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Connection Box
Mi VS 400

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Wiring strip

rated current: 400 A
VA 400

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Wiring terminal up to 400 A
DA 240

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Terminal for direct connection up to 400 A

max. 240 mm²
MK 0107

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auxiliary changeover contact

for circuit-breakers 16-630 A
MK 0106

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open-circuit shunt release

for circuit-breakers 16-630 A
MK 0105

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undervoltage release

for circuit-breakers 16-630 A
MK 0108

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circuit-breaker terminal for direct connection

1 x 35-300 mm², Cu/Alu, 3polig
MK 0109

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circuit-breaker terminal for direct connection

2 x 70-240mm², Cu/Alu, 3-pole
Mi WD 2

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Wall gasket

for box walls 150/300 mm
Mi WT 1

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Wall separator
Mi BE

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Fixing spares

4 connectors
Mi FP 20

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Flange

without knockouts
Mi FM 20

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Flange

knockouts 15 x M 16, 15 x M 20
Mi FM 25

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Flange

knockouts: 19 x M 16/25
Mi FM 32

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Flange

knockouts: 8 x M 25/32, 1 x M 25/32/40
Mi FM 40

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Flange

knockouts: 2 x M 25/32, 5 x M 32/40
Mi FM 50

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Flange

knockouts: 2 x M 20, 4 x M 32/40/50
Mi FM 60

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Flange

knockouts: 3 x M 40/50/63
Mi FM 63

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Flange with cable arrangement space

knockouts: 3 x M 40/50/63
Mi FP 38

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Flange

sealing range Ø 7-29 mm
Mi FP 70

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Flange

sealing range: 1 x Ø 30-72 mm
Mi FP 72

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Flange

sealing range: 2 x each Ø 30-72 mm
Mi FP 82

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Cable insert

sealing range: 2 x each Ø 30-72 mm
Mi ZE 62

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Cable strain relief

for 2 cables with max. 60 mm external diameter
Mi GS 30

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Box fin

for inserting cables across 2 boxes
Mi BF 44

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Ventilation flange

for vertical installation on box walls
BM 20G

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Pressure compensation element for M 20 knockouts
BM 40G

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Pressure compensation element for M 40 knockouts
Mi DB 30

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Canopy

for 300 mm box walls
Mi PL 2

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Sealing cap
Mi SR 4

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Conversion set

for hand operation on tool operation
Mi SN 4

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Conversion set

for converting lid fasteners from tool to manual operation
Mi SV 2

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Conversion set

for padlock (clip Ø max. 10 mm)
Mi DV 01

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Locking device insertion
Mi ZS 11

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Lid lock

with locking device I

for Mi boxes sizes 1 to 6
Mi ZS 12

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Lid lock

with locking device II

for Mi boxes sizes 1 to 6
Mi DR 04

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lid fastener for tool operation

triangle 8 mm
Mi ZS 20

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Mi hinge for lids

for Mi boxes sizes 1, 2, 3, 4
Mi ZS 40

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Mi hinge for lids

for Mi boxes sizes 1 to 8
Mi SA 2

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Dust protection cover
Mi AL 40

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4 stainless steel external brackets
Mi MS 2

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Profile for wall mounting
MX 0101

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Mounting profile set

U-profile for constructing a mounting frame
MX 0105

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Coupler set

for constructing a mounting frame
MX 0111

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Screw for box fixing
ESM 20

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Grommets

for knockouts M 20
ESM 25

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Grommets

for knockouts M 25
ESM 32

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Grommets

for knockouts M 32
ESM 40

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Grommets

for knockouts M 40
STM 20

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Stepped grommet

for knockouts M 20
STM 25

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Stepped grommet

for knockouts M 25
STM 32

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Stepped grommet

for knockouts M 32
STM 40

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Stepped grommet

for knockouts M 40
EDK 20

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Grommets

for knockouts M 20
EDK 25

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Grommets

for knockouts M 25
EDK 32

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Grommets

for knockouts M 32
EDK 40

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Grommets

for knockouts M 40
EDR 20

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Grommets for conduits

for knockouts M 20
EDR 25

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Grommets for conduits

for knockouts M 25
EDR 32

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Grommets for conduits

for knockouts M 32
EDR 40

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Grommets for conduits

for knockouts M 40
AKM 20

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Cable glands

for knockouts M 20
AKM 25

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Cable glands

for knockouts M 25
AKM 32

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Cable glands

for knockouts M 32
AKM 40

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Cable glands

for knockouts M 40
AKM 50

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Cable glands

for knockouts M 50
KBM 20

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Combi climate gland

for knockouts M 20
KBM 25

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Combi climate gland

for knockouts M 25
KBM 32

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Combi climate gland

for knockouts M 32
KBM 40

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Combi climate gland

for knockouts M 40
Declaration of conformity
Technical information

Declaration of conformity (77 kB)

RoHS Directive 2015/863/EU (455 kB)

REACH regulation 1907/2008/EG (475 kB)

Conflict minerals (145 kB)

System description and design (861 kB)

Design, project engineering and assembly (612 kB)

Assembly of Mi distribution boards up to 630 A (4 MB)

Operating and ambient conditions (27 kB)

Rated power dissipation of empty boxes (51 kB)

Rated loading factors (121 kB)

cable entry (353 kB)

Standards and Regulations (28 kB)

Degrees of protection (107 kB)

Definitions (34 kB)

IK Code (52 kB)

Material properties (26 kB)

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