India 
Moulded Case Circuit Breaker X250 3P 40kA 250A TM HNB250U
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Complete your system
Optional accessories
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Under voltage coil 2 products available -
Auxiliaries contact block 2 products available -
Motor operator 1 products available -
Shunt release 1 products available -
Handle for power circuit breaker 2 products available -
Connection Functions 1 products available
Complete your system
Technical characteristics
Electric current
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Rated current IN250 A
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Rated ultimate short-circuit breaking capacity Icu under 400 V AC IEC 60947-240 kA
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Rated ultimate short-circuit breaking capacity Icu under 240 V AC IEC 60947-285 kA
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Rated ultimate short-circuit breaking capacity Icu under 690 V AC IEC 60947-24 kA
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Rated current 10°C according to IEC 60947298,20 A
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Rated current 15°C according to IEC 60947292,70 A
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Rated current 20°C according to IEC 60947287,20 A
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Rated current 25°C according to IEC 60947281,20 A
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Rated current 30°C according to IEC 60947275,20 A
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Rated current at 35°C according to IEC 60947269,20 A
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Rated current at 40°C according to IEC 60947263 A
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Rated current 45°C according to IEC 60947256,50 A
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Rated current 50°C according to IEC 60947250 A
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Rated current 55°C according to IEC 60947243,20 A
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Rated current at 60°C according to IEC 60947236,20 A
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Rated current 65°C according to IEC 60947229,20 A
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Rated current 70°C according to IEC 60947222,20 A
Architecture
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Number of poles3
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Control/operation elementToggle
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Device construction typeFixed built-in
Tripping
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Response time when opening10 ms
Frequency
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Frequency50 - 60 Hz
Voltage
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Rated impulse withstand voltage Uimp8000 V
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Rated insulation voltage Ui800 V
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Rated operational voltage Ue220 - 415 V
Functions
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Trip unitTM A/A
Power
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Power dissipation at IN48 W
Endurance
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Electric endurance in number of cycles1000
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Number of mechanical operations4000
Safety
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Ingress Protection (IP) classIP4X
Connection
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Cross-section flexible conductor35 - 150 mm²
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Cross-section rigid conductor35 - 185 mm²
Settings
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Thermal protection knob setting xIN0.63, 0.8, 1
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Adjustment range short-term delayed short-circuit release0 - 0 A
Compatibility
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Suitable for DIN RailNo
Installation, mounting
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Mounting-/Connection PositionFront
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Nominal tightening torque12 - 12 Nm
Main electrical attributes
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Magnetic protection trip time0 - 0 ms
Environmental value
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Certifications and documents
Downloads
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Product data sheet
UK_PD_TDS_MCCBx250.pdf
Technical data sheet for MCCB x250.
PDF1,63 MB -
Declaration of conformity
Declaration of conformity en-US 2026-07-14
PDF277,07 kB
UKCA Declaration of Conformity
PDF329,43 kB
More documentation
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