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3NA3824

The 3NA3824 is a 3-pole molded case circuit breaker from Siemens' 3NA3 series, rated at 250 A for 690 V AC (deratable to 1000 V AC) and 250 V DC. It features a 50 kA breaking capacity at 400 V AC, with thermal-magnetic trip units for adjustable overcurrent protection (Ir/Is settings).

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3NA3824 Brief English Parameters
General Information
Product Family: Siemens 3NA3 Series Circuit Breaker
Order Code: 3NA3824
Type: 3-pole molded case circuit breaker
Key Technical Specs
Rated Current (In): 250 A
Rated Voltage:
690 V AC (up to 1000 V AC with derating)
250 V DC
Breaking Capacity (Icu):
50 kA at 400 V AC
10 kA at 250 V DC
Trip Units:
Thermal-magnetic trip (standard)
Adjustable long-time (Ir) and short-time (Is) settings
Mechanical/Environmental
Dimensions: 144 x 130 x 105 mm (WxHxD)
Mounting: Panel mounting (screw-on) or DIN rail (with adapter)
Operating Temperature: -25°C to +70°C
Protection Class: IP20 (enclosure)
Enclosure Material: Flame-retardant thermoplastic