We source directly from Eaton - 100% genuine, new-in-box certified parts.
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Eaton / Moeller Series
550A, 3P, adjustable short-circuit release UL/CSA
The Eaton Moeller NZMH3-AEF500-NA is a 550A, 3-pole molded case circuit breaker designed for high-capacity industrial applications. Featuring an adjustable undelayed short-circuit trip range of 1100–4400A and a fixed overload setting of 550A, this built-in device delivers robust protection with a breaking capacity of 100kA at 480 V (150kA at 400 V). It is front-connected via screw terminals and includes a rocker lever operator. The breaker is IP20 rated and supports optional motor drive functionality. Certified to UL/CSA standards, it is ideal for transformer, generator, and installation protection in low-voltage environments.
Country of Origin: DE
We source directly from Eaton - 100% genuine, new-in-box certified parts.
| Manufacturer | Eaton Moeller |
|---|---|
| Model | NZMH3-AEF500-NA |
| Product Type | Molded Case Circuit Breaker (MCCB) |
| Amperage | 550 A |
| Poles | 3 |
| Trip Type | Thermal-magnetic |
| Control Element | Rocker lever |
| Construction | Built-in fixed technique |
| Motor Drive | Optional |
| Mounting | Fixed (not DIN rail) |
| Rated Voltage | 690 V |
|---|---|
| Rated Operating Current (Iu) | 550 A |
| Overload Current Setting | 550–550 A (fixed) |
| Undelayed Short-Circuit Trip Range | 1100–4400 A |
| Interrupting Capacity | 100 kA @ 480 V |
| Breaking Capacity at 400 V | 150 kA |
| Electrical Connection | Screw terminals (front side) |
| Ingress Protection (IP) | IP20 |
| ETIM Class | Power circuit-breaker for trafo/generator/installation protection |
| ETIM Group | Low-voltage industrial components |
| Certifications | UL/CSA |
| Earth Fault Protection | No |
| Auxiliary Contacts | 0 (change-over, NC, NO) |
Doing business with KM Parts has been a game-changer for our company. Their vast inventory and prompt same-day shipping have significantly minimized our downtime. The team's expertise and willingness to go the extra mile have made them an invaluable partner in our industrial automation needs.
We only sell authorized Eaton/Moeller parts. No knock-offs, no used parts, all warrantied. As the largest authorized stocking USA distributor representing Eaton/Moeller, we’re here to help your company run smoothly, with the best parts available, at competitive pricing, and with minimal downtime.
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