Eaton NZMH2-A250-BT-NA Molded Case Circuit Breaker - 690V
Part Number: NZMH2-A250-BT-NA
Quick Summary
Eaton NZMH2-A250-BT-NA molded case circuit breaker protects distribution circuits in industrial facilities. Design challenges like coordinating fast fault isolation with minimal downtime can complicate panel protection. In practice, certifications such as CE marking, IP ratings, and SIL compatibility commonly guide procurement decisions. This solution combines a 250 A rating with adjustable thermal and magnetic trip to optimize reliability and total cost of ownership, while supporting efficient panel installation and safe, compliant operation.
Product Information
Extended Description
NZMH2-A250-BT-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMH2, Adj. thermal, adj. magnetic trip, Three-pole, 250A, 690 Vac, 750 Vdc, 85-150 kAIC, Box, Distribution circuit protect., 200-250A, Front frame clamp, 200-250A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMH2-A250-BT-NA
EAN
4015081074556
Product Length/Depth
5.51 in
Product Height
5.86 in
Product Width
5.86 in
Product Weight
5.17 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
Contact Manufacturer
Amperage Rating
250 A
Voltage rating
690 Vac, 750 Vdc
Trip Type
Adjustable thermal, adjustable magnetic
Circuit breaker type
NZMH2
Terminals
Box
Frame
NZM2
Class
Distribution circuit protection
Accessories
Rocker lever, motor drive
Adjustment range short-circuit release
1500-2500A delayed
Setting Range Ol Protector
200-250A
Short-circuit breaking capacity
150 kAIC
Interrupt rating
85-150 kAIC
Connection
Front frame clamp
Overload range
200-250A
Number of poles
Three-pole
The NZMH2-A250-BT-NA leverages a Three-pole NZM2 frame to deliver robust distribution circuit protection for industrial panels, with a 250 A amperage rating. Business impact includes improved fault isolation and reduced downtime through precise, user-adjustable thermal and magnetic trip settings, ideal for machine controls and manufacturing lines. This unit operates at 690 Vac and 750 Vdc, enabling seamless AC/DC protection within mixed power environments, while maintaining high availability in critical processes. The short-circuit breaking capacity of 150 kAIC and an interrupt rating of 85-150 kAIC provide strong fault resilience for demanding environments, supporting safer, more reliable operations. Front frame clamp terminals simplify installation in compact switchgear and control panels, reducing assembly time and tightening panel integrity. Accessories such as a rocker lever and motor drive enhance integration with automation systems, improving maintenance efficiency and lifecycle cost. Warranty and service terms align with Eaton policies, offering coverage that supports long-term ROI and predictable maintenance budgeting.
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FAQs
The NZMH2-A250-BT-NA is designed for distribution protection in industrial control panels and machinery enclosures. It supports three-pole protection with a 250 A rating and accommodates both AC and DC supply environments (690 Vac / 750 Vdc), enabling reliable machine protection and uptime in manufacturing facilities.
This unit features adjustable thermal and magnetic trip. By tuning the thermal curve, you set the overload protection to the exact current range, while the magnetic setting controls instantaneous fault trips. This combination improves selective coordination, reduces nuisance trips, and enhances protection for sensitive loads in evolving production lines.
Yes. The front-frame clamp terminals are designed for straightforward mounting in distribution panels and switchgear, minimizing wiring complexity. The compact NZM2 frame integrates neatly with standard panel layouts, while a rocker lever option and motor-drive accessories simplify integration with automation systems and remote control schemes.
The NZMH2-A250-BT-NA provides a short-circuit breaking capacity of 150 kAIC and an interrupt rating range of 85-150 kAIC. This makes it suitable for protecting high-energy circuits in medium- to large-scale industrial installations, helping to limit arc energy and promote rapid fault clearance.
Warranty terms follow Eaton policy: one year from installation or eighteen months from shipment, whichever comes first. This coverage supports maintenance planning and helps mitigate lifecycle costs, while Eaton technical support and documentation aid in commissioning and ongoing reliability assessments.