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Differential automatic switch (difavtomat) NBH8LE-40 is designed to protect electrical circuits of alternating current with a frequency of 50-60 Hz and voltage of 230/400 V against earth leakage, as well as overload and short-circuit currents. The differential machine is used to protect people from electric shock when in contact with live parts, as well as to protect equipment from fires due to a breach of wiring insulation.
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Rated operating voltage, Uе, V AC 230/400
Rated mains frequency, Hz 50/60
Rated operational current, In, A 10
Leakage current, I∆n, mA 30
AC type
Response time, sec≤ 0.1
Nom. differential breaking current, I∆m, A 500
Short-circuit protection characteristic C
Rated conditional short-circuit current Inc, kA 4.5
Electrical durability, cycles (On-Off), not less than 4000
Mechanical durability, cycles (On-Off), not less than 20,000
Number of poles 1P+N
Breaker protection class IP20
Maximum cross-section of the connected wires, mm² 16
Tightening torque of terminal clamps, Nm 2
Operating temperature range, ˚С -25 ...+40
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The data presented in the product description are for reference only and may differ from those indicated by the manufacturer.
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The data presented in the product description are for reference only and may differ from those indicated by the manufacturer.
