Eaton NZMH2-A20-BT-NA Molded Case Breaker - 150 kAIC
Part Number: NZMH2-A20-BT-NA
Quick Summary
Eaton NZMH2-A20-BT-NA molded case circuit breaker provides reliable overcurrent protection for distribution panels in industrial facilities. Engineers often struggle with nuisance trips, poor coordination, and downtime during maintenance, especially in high-demand control environments. Compliance details are provided by the manufacturer; consult Eaton to verify applicable certifications for your region. The device supports 690 Vac and 750 Vdc, with a 20 A load rating, front-frame clamp terminals, and a three-pole configuration. Its adjustable thermal and magnetic trip offers scalable protection, while the NZM2 frame and compatible accessories enable straightforward installation and reliable long-term operation.
Product Information
Extended Description
NZMH2-A20-BT-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMH2, Adj. thermal, adj. magnetic trip, Three-pole, 20A, 690 Vac, 750 Vdc, 85-150 kAIC, Box, Distribution circuit protect., 15-20A, Front frame clamp, 15-20A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMH2-A20-BT-NA
EAN
4015081074440
Product Length/Depth
4.05 in
Product Height
7.24 in
Product Width
4.13 in
Product Weight
4.1 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.
Compliances
Contact Manufacturer
Amperage Rating
20 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
350-350A delayed
Setting Range Ol Protector
15-20A
Short-circuit breaking capacity
150 kAIC
Interrupt rating
85-150 kAIC
Connection
Front frame clamp
Overload range
15-20A
Number of poles
Three-pole
Feature → Business Impact → Application: Adjustable trip (thermal and magnetic) enables precise protection settings, reducing nuisance trips and improving coordination across three-phase circuits, which lowers maintenance costs and downtime in manufacturing lines. Application: suited for distribution panels and machinery control where 20 A blocks are typical, with an interrupt rating up to 150 kAIC for robust fault isolation. Feature → Business Impact → Application: NZM2 frame compatibility and front-frame clamp terminals simplify mounting and wiring, accelerating panel upgrades and retrofits in existing electrical rooms. Application: ideal for retrofit projects and new-build distribution boards needing quick, secure installations. Feature → Business Impact → Application: 690 Vac / 750 Vdc rating supports mixed AC/DC environments, enabling a single MCCB solution for diverse plant equipment. Application: control panels and machine assemblies requiring versatile voltage handling. Feature → Business Impact → Application: 15-20 A setting range and 350 A delayed short-circuit release provide flexible protection and coordination with downstream devices. Application: motor control centers and process lines with variable load profiles. Feature → Business Impact → Application: Accessories like rocker lever and motor drive expand usability, improving operator control and enabling remote or automated startup sequences. Application: streamlined commissioning in new builds and upgrades.
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FAQs
NZMH2-A20-BT-NA uses front-frame clamp terminals and is a three-pole device designed for NZM2 frame installations. It is compatible with distribution panels that support box terminals and front-mounting assemblies. The unit ships with a rocker lever and motor drive accessory option, enabling quick, secure wiring and convenient user interaction during commissioning and maintenance.
This MCCB features a 20 A amperage rating and supports 690 Vac / 750 Vdc. It provides adjustable thermal and adjustable magnetic trip, with short-circuit breaking capacity of up to 150 kAIC and an interrupt rating range of 85–150 kAIC. The three-pole configuration is ideal for balanced 3-phase distribution networks, offering precise protection and fast fault clearance.
Yes. The device is a three-pole NZMH2 MCCB built on the NZM2 frame, designed for distribution protection in 3-phase systems. With an adjustable trip and a high fault-current rating, it suits industrial machinery, control panels, and process lines that require reliable protection, easy maintenance, and scalable settings for varied load profiles.
Compliance details are provided by the manufacturer. For certification documentation and region-specific requirements, contact Eaton’s technical support or your Eaton distributor. The data sheet emphasizes standard protections, warranties, and installation guidelines; verify any CE, IP, or SIL documentation directly with Eaton to ensure alignment with local regulations.
The product follows Eaton’s warranty policy: one year from the date of installation or eighteen months from the date of shipment, whichever occurs first. Regional service availability may vary, but Eaton provides documentation and support resources to help with maintenance, part replacement, and lifecycle planning for distribution protection equipment in industrial facilities.