NF1250-SEW

Overview of Mitsubishi NF1250-SEW

The Mitsubishi NF1250-SEW is a high-performance molded case circuit breaker (MCCB) designed for standard class industrial applications. It features 3 poles and is rated for currents ranging from 600 A to 1250 A. This MCCB provides reliable short-circuit protection and overload protection with a high breaking capacity suitable for AC power systems up to 690 VAC.

Key Features of Mitsubishi NF1250-SEW

• Type: Molded Case Circuit Breaker (Standard Class)
• Number of Poles: 3 poles (3P)
• Frame Size: 1250 AF
• Rated Current (Ir): Adjustable 600 - 1250 A
• Rated Voltage (Ue): 690 VAC
• Frequency: 50 Hz / 60 Hz
• Breaking Capacity (Icu): 85 kA at 440 VAC; 125 kA at 230 VAC
• Service Breaking Capacity (Ics): 50% of Icu
• Control Type: Handle toggle ON/OFF
• Mounting Method: Surface mounting
• Connection Type: Busbar terminals
• Dimensions (W x H x D): 210 mm x 406 mm x 190 mm
• Weight: Approximately 23.5 kg
• Standards and Certifications: CCC, CE compliant; LR, ABS, UKCA certified

Optional Accessories

• Alarm switch (AL)
• Auxiliary switch (AX)
• Earth fault preventing barriers (BA-G)
• Electrical operated circuit breakers and operation devices
• Handle lock devices (HL, HL-S, LC)
• Shunt trip (SHT)
• Under/Over voltage trip (UVT)
• Terminal covers (BTC, PTC, TC-L, TC-S, TTC)
• Mechanical interlocks (MI)

Applications / Use Case

The NF1250-SEW MCCB is used extensively in industrial and commercial power distribution networks to protect electrical circuits from damage caused by overload or short circuit. It is suitable for heavy-duty applications that require high interrupting capacities and reliable circuit protection.