Data Sheet

Data sheet 5SY8640-8

Miniature circuit breaker 400 V D=70 mm 25 kA according to EN

60947-2, 3P+N, D40

Model

Product brand name SENTRON

Product designation Miniature circuit breaker

General technical data

Number of poles 4

Number of poles / Note 3P+N

Tripping characteristic class D

circuit-breaker / Design 5SY8

Mechanical service life (switching cycles) / typical 10000

Overvoltage category III

Voltage

Insulation voltage

● with single-phase operation / at AC / rated

value

440V

● with multi-phase operation / at AC / rated value

440V

Supply voltage / with single-phase operation / at AC /

rated value

230V

Supply voltage

5SY8640-8 Subject to change without notice

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Data sheet 5SY8640-8 Miniature circuit breaker 400 V D=70 mm 25 kA according to EN 60947-2, 3P+N, D40 Model Product brand name SENTRON Product designation Miniature circuit breaker General technical data Number of poles 4 Number of poles / Note 3P+N Tripping characteristic class D circuit-breaker / Design 5SY8 Mechanical service life (switching cycles) / typical 10 000 Overvoltage category III Voltage Insulation voltage ● with single-phase operation / at AC / rated value 440 V ● with mul
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Type of voltage AC Current / at AC / rated value 40 A Supply voltage ● at AC / rated value 400 V Operating voltage ● at DC / rated value / maximum 72 V Supply voltage frequency ● rated value 50/60 Hz Protection class Protection class IP IP20, with connected conductors Switching capacity Switching capacity current ● at DC / acc. to IEC 60947-2 / rated value 15 kA ● acc.
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● Connectable conductor cross-section / finely stranded / with core end processing 0.75 ... 25 mm² AWG number / as coded connectable conductor cross section 18 ... 4 Tightening torque [lbf·in] / with screw-type terminals 22 ... 31 lbf·in Tightening torque / with screw-type terminals 2.5 ... 3.