Chint Moulded Case Circuit Breaker NM8N 400A 4 poles 380/415Vac 268946
CHT 268946
6941716426354
The moulded case circuit breaker Chint NM8N 400A 4 poles (268946) with electronic trip unit ensures protection and disconnection up to 690V. Ideal for Power Centers and industrial panels with high reliability:
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Type: moulded case circuit breaker (MCCB)
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Standard: EN 60947-2
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Poles: 4 (complete three-phase + neutral protection)
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Rated current (In): 400 Amperes
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Rated voltage (Vn): 380/415 Vac
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Max operating voltage (Ue): 690 Vac
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Insulation voltage (Ui): 1000 Vac
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Impulse voltage (Uimp): 8 kV
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Ultimate breaking capacity (Icu): 36 kA @ 380/400/415 V
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Service breaking capacity (Ics): 36 kA @ 380/400/415 V
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Current adjustment Ir: 0.7 - 1 x In
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Utilization category: A
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Trip unit type: Electromechanical
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Protection degree: IP00 / IP40 with terminal covers
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Dimensions (H×W×D): 255x185x113 mm
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Moulded case size: Frame 23
€1,027.36
Items Available: 2
: 1
Frequently bought together
Moulded Case Circuit Breaker Chint NM8N 400A: protection for industrial panels
The moulded case circuit breaker Chint series NM8N-400 (code 268946) is designed for industrial electrical distribution applications in Power Centers, tertiary panels, and Motor Control Centers (MCC). The four-pole configuration (4 poles) allows for complete protection of three-phase lines with neutral, ensuring safety and operational continuity. Thanks to its robust construction and the possibility of integrating dedicated accessories, the device easily adapts to complex installations and high-reliability application systems.
Adjustment range and category of use
The breaker is equipped with an electromechanical trip unit with an adjustment range Ir from 0.7 to 1×In, allowing the protection to be adapted to the needs of the installation. The utilization category A makes it suitable for installations where time-selective coordination is not required, typically in main or secondary distribution lines.
Installation and structure
With Frame size 23 and compact dimensions (255 × 185 × 113 mm), the device integrates easily into industrial electrical panels. The protection degree is IP00, upgradable to IP40 with terminal covers, for greater safety against accidental contact. The product complies with the EN 60947-2 standard, a reference for low-voltage circuit breakers for industrial use.
Particularly suitable for:
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Power Center
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Tertiary electrical panels
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Motor Control Center (MCC)
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High-power industrial installations
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Data sheet
- Type: Switches
- Voltage: 380/415VAC
- Poles: 4P
- Breaking capacity: 36KA
- Amps: 400A
