What is Eaton NZMN2-A250 Circuit Breaker?
The Eaton NZMN2-A250 molded case circuit breaker (MCCB) is an industrial model from the NZM2 series, rated at 250A. It is widely used in medium and large power distribution systems for circuit protection and power switching.
When overloads, short circuits or abnormal current conditions occur in the electrical system, it trips instantly to cut power, preventing damage to cables, equipment and the whole distribution setup.
Product Positioning & Features of Eaton NZMN2-A250
● Suitable for medium and large load circuits rated around 250A
● Compact body design that saves cabinet space
● Supports a wide range of optional accessories including auxiliary contacts and various trip units for function expansion
● Excellent breaking capacity to handle short-circuit faults in industrial applications
Eaton NZMN2-A250 Technical Specifications
● Model:Eaton NZMN2-A250
● Number of Poles: 3 Pole
● Rated Current: 250A
● Frame Size: NZM2
● Rated Operating Voltage: AC 415V / AC 690V
● Overload Adjustment Range: 200A ~ 250A (80%~100% rated current)
● Trip Type: Adjustable thermal-magnetic trip
250A Different Frame Comparison: NZMN2-A250 vs NZMN3-A250
Both circuit breakers have a 250A rated current but adopt different frame sizes, with clear differences in structure, performance and application.
Core Differences：
● Size & Installation NZM2 is a compact 250A max frame, allowing direct replacement and saving cabinet space. NZM3 is a larger 400A frame with different mounting dimensions, requiring more installation space.
● Breaking Capacity NZM2 provides 50kA breaking capacity for standard industrial distribution. NZM3 delivers up to 70kA breaking performance, suitable for heavy-duty and high short-circuit current environments.
● Cost & Expandability NZM2 is cost-effective with dedicated NZM2 accessories, but has no current upgrade margin. NZM3 is higher in cost, supports more accessories, and reserves expansion space up to 400A for future load upgrades.
NZM Series Selection Guide
Improve efficiency
● NZM1 Series: For low-current circuits, provides basic power distribution protection
● NZM2 Series: Standard for medium-current industrial environments, widely used in factory power distribution
● NZM3 Series: Designed for high-current main circuits and serves as main circuit protection
Aftersales Support
Quantity available: In stock.
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Warranty: 12 months.
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Lead time: Shipment within 3-5 working days.
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Terms of payment: T/T. RMB (CNY) support.
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Courier partners: FedEx, DHL, UPS, TNT, EMS, SF express.
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FAQ
Q1: What scenarios is the NZMN2-A250 suitable for?
A1: It applies to industrial power distribution systems, motor protection, as well as power control and protection for medium and large-sized equipment.
Q2: Does this circuit breaker support accessory expansion?
A2: Yes. Functional modules such as auxiliary contacts and trip units can be selected according to actual demands.
Q3: Can the trip parameters of NZMN2-A250 be adjusted on site?
A3: Yes. This model is equipped with an adjustable thermal-magnetic trip unit. The overload protection current can be fine-tuned on site within the range of 200–250A to match the protection threshold based on actual load capacity. The short-circuit trip is fixed at 10 times the rated current and cannot be adjusted.
Q4: How can I place an order or apply for bulk purchase discounts?
A4: Send your required order quantity via email to Irene8866@163.com, or leave us a message on WhatsApp (+86 18950163907). We will reply within 24 hours with formal quotation and stock confirmation.
For more product information, please contact our professional sales team to obtain the latest pricing and stock information for the Eaton NZMN2-A250!
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