We source directly from Eaton - 100% genuine, new-in-box certified parts.
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Eaton / Moeller Series
300A, 3P, breaker, thermal-magnetic trip
The Eaton NZMH3-AEF300-NA is a 300-amp, three-pole molded case circuit breaker designed for distribution circuit protection. Part of the NZM3 frame series, it features a thermal-magnetic trip unit (T268) with an adjustable short-circuit release range of 600–3300A and a fixed overload setting of 300A. Rated for up to 690 V AC, the breaker delivers high interrupting capacity, with 100 kAIC at 480 V and up to 150 kAIC total. It uses front screw connections and supports accessories like rocker levers and motor drives. Certifications and compliance information are available upon request from the manufacturer.
Country of Origin: DE
We source directly from Eaton - 100% genuine, new-in-box certified parts.
| Brand | Eaton |
|---|---|
| Model | NZMH3-AEF300-NA |
| Series | NZM3 |
| Product Type | Molded Case Circuit Breaker |
| Amperage | 300 A |
| Poles | Three-pole |
| Trip Type | Thermal-magnetic (T268) |
| Frame Size | NZM3 |
| Terminals | Front screw |
| Protection Class | Distribution circuit protection |
| Voltage Rating | 690 V AC |
|---|---|
| Interrupting Capacity | 100 kAIC @ 480 V, up to 150 kAIC |
| Overload Protection Range | 300–300 A |
| Short-Circuit Release Adjustment | 600–3300 A (delayed) |
| Accessories | Rocker lever, motor drive |
| Connection Type | Front screw |
| Certifications | Contact Manufacturer |
| Dimensions (HxWxD) | 6.53 in × 6.53 in × 5.51 in |
| Weight | 5.5 lb |
| Warranty | 1 year from installation or 18 months from shipment |
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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