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Molded Case Circuit Breaker 400A | 690V AC | IP20 & IP66 Protection | Electronic Release by Eaton
Molded case circuit breaker rated at 400A and 690V AC—ideal for industrial electrical protection. Built for reliable performance with electronic release and high short-circuit breaking capacity, ensuring safety and efficiency in your electrical systems.
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Product Name/Title: Molded Case Circuit Breaker 400A | 690V AC | IP20 & IP66 Protection | Electronic Release by Eaton
Brand: Eaton
SKU: Y7-191603
Alternatively Known As: Molded Case Circuit Breaker 400A, NZM3 Circuit Breaker, Eaton NZM3 PXR20, Electronic MCCB 400A
Technical Specifications
- Amperage Rating: 400 A
- Voltage Rating: 690 V AC
- Number of Poles: Three-pole
- Mounting Method: Fixed built-in device
- Degree of Protection: IP20 (basic), IP66 with door coupling rotary handle
- Short-circuit breaking capacity (Ics) at 230 V: 85 kA
- Short-circuit breaking capacity (Ics) at 400/415 V: 50 kA
- Rated insulation voltage (Ui): 690 V AC
- Operating Temperature Range: -25 °C to 70 °C
- Mechanical Lifespan: 15000 operations
- Electrical Lifespan: 5000 operations at 400 V AC-1
- Terminal Capacity (copper stranded conductor): 35 mm² - 240 mm²
- Release System: Electronic release
- Overload Current Setting (Ir): 160 A - 400 A
- Short Delay Current Setting (Isd): 2 A - 10 A
- Instantaneous Current Setting (Ii): 2 A - 12 A
- Pollution Degree: 3
- Shock Resistance: 20 g (half-sinusoidal shock 20 ms)
- Features: Motor drive optional protection unit, USB interface, communication capable
- Dimensions (H x L x W): 275mm x 166mm x 140mm
- Weight: 7 kg
Key Features
- Electronic release with LSI overload protection and delayed/non-delayed short-circuit protective device
- R.m.s. value measurement and thermal memory
- USB interface for configuration and test with Power Xpert Protection Manager software
- Optionally communication-capable with interface module and internal Modbus RTU or CAM
- High rated short-circuit breaking capacity up to 85 kA at 230 V
- Screw terminal main circuit connection with optional box and tunnel terminals
- Finger and back-of-hand proof protection to DIN EN 50274/VDE 0106 part 110
- IP20 basic degree of protection in operating controls area
- Mechanical lifespan of 15000 operations and electrical lifespan of up to 5000 operations at rated voltages
- Ambient operating temperature range from -25 °C to 70 °C
Professional Installation Requirements
- Installation must be performed by a qualified electrician familiar with industrial circuit breakers and compliance with local electrical codes.
Applications
- Use in unearthed supply systems at 690 V
- Industrial electrical protection
- Motor drive and generator protection
- Cable and system selectivity protection
Standards & Compliance
- AS/NZS 3000 – Wiring Rules (Electrical Installation)
- AS/NZS 3820 – Essential Safety Requirements for Electrical Equipment
Environmental Benefits
- RoHS compliant ensuring reduced hazardous substances
- Energy efficient protection reducing electrical faults and downtime
- Durable design extends product lifecycle reducing waste
Warranty Information
Standard manufacturer warranty applies; please refer to Eaton's official warranty policy for details.
Available Now
The Eaton Moeller NZM3 PXR20 400A Molded Case Circuit Breaker is available for immediate purchase. Ideal for industrial and commercial electrical protection applications.
