NM8N-250S TM 160 3P

Chint NM8N TM circuit breakers are equipped with adjustable thermomagnetic trip units. Designed to protect electrical circuits against long-term overloads and short-circuit currents, as well as for manual switching of AC circuits with voltage up to 660 V, 50 Hz.

Standards: IEC 60947-2

Number of poles 3
Rated voltage, Ue, V AC 400/690, f=50 Hz
Trip unit type Thermomagnetic, adjustable
Rated current, In, A 160
Overload protection, Ir 0.7…1 In
Short-circuit protection, Ii 7...12 In
Rated ultimate short-circuit breaking capacity, Icu at 400 V, 50 kA
Rated service short-circuit breaking capacity, Ics at 400 V, 50 kA
Mechanical/electrical endurance 15,000/6,000 operations
Operating temperature range, °C -40…+70
Degree of protection IP00 (IP20)