Explosion-proof circuit-breakers 400 A
Explosion-proof circuit-breakers 400 A
Circuit breakers are designed for connecting and disconnecting circuits in normal conditions
for operating conditions and for supplying and interrupting current in emergency cases, e.g. in the event of a short circuit.
Full AC-3 switching capacity for motor connection in accordance with EN 60947-4-1 and forced opening of the main contacts in accordance with EN 60204-1 are just some of the distinctive features of the AC-3 motor connection.
features of these circuit breakers. On request, versions up to 180 A are available with guaranteed IP65 protection. The switch position is unambiguously labelled and easy to read.
Technical specifications
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Explosion-proof circuit-breakers 400 A |
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Mark |
II 2 G Ex de ia/ib [ia/ib] IIC T4 – T6 II 2 D IP66 T80 °C / T95 °C / T130 °C |
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EU certificate |
PTB 99 ATEX 1057 |
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Certificate of Conformity |
IECEx BKI 06.0006 |
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Mark |
Ex de ia/ib [ia/ib] IIC T6/T5/T4 |
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Permissible ambient temperature |
-20°C to +40°C |
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Nominal voltage |
maximum up to 690 V |
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Rated current |
max. 400 A |
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Frequency |
50/60 Hz |
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Rated switching on/off capacity AC-3 |
230 V Ue/ Ie 400 A |
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Input fuse |
400 V AC: 500 A gL |
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Cable coupling/hole in the housing |
M63 (d = 27…48 mm) see ordering data |
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Protection class |
I |
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Degree of protection according to EN 60529 |
IP54 (IP65 option) |
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Enclosure material |
aluminium, polyester powder coating |
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Case colour |
grey (RAL 7032) |
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Ordering data |
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| 400 A 3-pin circuit-breaker with 4 x M63 cable glands | EXKO 73 1813 E0001 |
| 400 A 4-pin circuit-breaker with 4 x M63 cable glands | EXKO 73 1814 E0001 |
Customised execution.
