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NF1000-SEW Mitsubishi NF1000SEW 3P 500-1000A Circuit Breaker New Factory Sealed
NF1000-SEW Mitsubishi NF1000SEW 3P 500-1000A Circuit Breaker New Factory Sealed
Specifications
Brand Name :
Mitsubishi
Model Number :
NF1000-SEW
Certification :
CE ROHS
Place of Origin :
Japan
MOQ :
1
Price :
USD 1100-1300 / piece
Payment Terms :
Western Union,T/T,D/P,D/A,L/C
Supply Ability :
100 pcs per day
Delivery Time :
2 days
Packaging Details :
Original packaging
Part Number :
NF1000-SEW
Brand :
Mitsubishi Electric
Product Type :
Molded Case Circuit Breaker
Series :
WS-V series
Sub-range :
NF-S
Poles :
3-pole
Frame Current Rating :
1000 AF
Condition :
New / Used
Warranty :
One year
Description
Mitsubishi NF1000-SEW | WS-V Series 1000A Standard Class MCCB
Electronic Trip, 85kA at 400V, 3-Pole & 4-Pole
Product Overview
The Mitsubishi NF1000-SEW is a 1000A standard class moulded case circuit breaker from the WS-V series, equipped with an electronic trip unit and rated for short-circuit interruption up to 85 kA at 400V. This performance level makes it ideal for main incoming distribution, large motor control centre incomers, and industrial power distribution panels where high prospective fault current is expected.
Key Specifications
Parameter Value
Frame / Rated Current 1000 A
Class NF-S - Standard
Rated Voltage (AC) Up to 690 VAC
Poles 3-Pole (3P) and 4-Pole (4P)
Icu at 200 / 230 VAC 125 kA
Icu at 380 / 400 / 415 / 440 VAC 85 kA
Icu at 500 VAC 65 kA
Icu at 690 VAC 25 kA
Ics at 380 / 400 / 415 / 440 VAC 43 kA (50.6% Icu)
Trip Unit Electronic (solid-state, adjustable)
Connection Front lugs or busbars
Dimensions (3P) 210 mm * 406 mm * 190 mm
Weight (3P) 23.5 kg
Electrical Life 500 cycles at rated current
Mechanical Life 3,000 cycles
Standard IEC 60947-2 / EN 60947-2
IP Rating IP20
Electronic Trip Unit Advantages
The electronic trip unit provides adjustable overcurrent protection settings, allowing engineers to customize protection characteristics for selective coordination with downstream devices. This enables discriminative protection where faults on sub-circuits trip only the sub-circuit breaker, leaving the main distribution unaffected.
High Breaking Capacity Performance
With an 85 kA Icu rating at 400V, the NF1000-SEW can interrupt severe three-phase short-circuit faults and remain functional. The device provides substantial margin above typical industrial fault current ranges, ensuring reliable protection for main incoming applications.
Physical Installation
The NF1000-SEW features an IP20 protection rating and requires proper mechanical support in enclosed electrical switchgear cabinets. At 23.5 kg for the 3-pole unit, it is designed for fixed mounting with front terminal connections for busbars or cable lugs.
Frequently Asked Questions
Q1: What is the difference between the NF1000-SEW and a fixed thermal-magnetic MCCB at the same current rating?
The fundamental difference is the trip unit. The NF1000-SEW's electronic trip unit provides adjustable overcurrent protection settings for coordination with downstream devices, while fixed thermal-magnetic units have factory-determined trip curves that cannot be altered.
Q2: What is the difference between Icu 85 kA and Ics 43 kA at 400V?
Icu (ultimate breaking capacity) is the maximum fault current the breaker can interrupt without being destroyed. Ics (service breaking capacity) is the fault current level after which the breaker is rated for continued service without inspection. The NF1000-SEW can interrupt up to 85 kA but should be inspected after any fault above 43 kA.
Q3: Is the NF1000-SEW suitable for 690V systems?
Yes, the NF1000-SEW is rated for AC operation up to 690V. However, the breaking capacity at 690V reduces to 25 kA (Icu), so prospective fault current must be confirmed to be within this limit before specification.
Q4: What optional accessories are available for the NF1000-SEW?
Available accessories include shunt trip coils for remote electrical tripping, under-voltage releases, auxiliary contacts for remote status signalling, alarm contacts for fault indication, motor drive accessories, and rear terminal covers for busbar connections.
Q5: Can the electronic trip settings on the NF1000-SEW be changed in the field?
Yes, the electronic trip unit settings are adjustable in the field using the device's setting controls. Settings changes should be documented as part of the installation's protection coordination study and performed by qualified electrical engineers.
NF1000-SEW Mitsubishi NF1000SEW 3P 500-1000A Circuit Breaker New Factory Sealed
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NF1000-SEW Mitsubishi NF1000SEW 3P 500-1000A Circuit Breaker New Factory Sealed

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Product Detail
Brand Name :
Mitsubishi
Model Number :
NF1000-SEW
Certification :
CE ROHS
Place of Origin :
Japan
MOQ :
1
Price :
USD 1100-1300 / piece
Contact Supplier
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NF1000-SEW Mitsubishi NF1000SEW 3P 500-1000A Circuit Breaker New Factory Sealed

Guangzhou Sande Electric Co.,Ltd.

Verified Supplier
11 Years
hebei, guangzhou
Since 2013
Business Type :
Manufacturer
Main Products :
Industrial Automation Sensors, Servo Motor Driver, Industrial Servo Motor
Total Annual :
5000000-10000000
Employee Number :
50~100
Certification Level :
Verified Supplier
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