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Eaton / Moeller Series
550A, 3P, breaker, electronic trip, 150kAIC, UL/IEC/CSA
The Eaton NZMH3-VEF550-NA (Catalog No. 269322) is a robust 3-pole molded case circuit breaker designed for industrial feeder and branch circuit protection. With a rated current of 550 A and an electronic trip unit, it offers precision overload protection and advanced short-circuit protection. The breaker supports adjustable short-delay and instantaneous settings up to 3850 A and 4400 A, respectively. Rated for 150 kA at 400/415 V and compliant with UL, CSA, and IEC standards, it features screw terminals, a rocker lever, and IP20 protection. It is ideal for high-performance systems requiring fast break times and thermal memory.
Country of Origin: DE
We source directly from Eaton - 100% genuine, new-in-box certified parts.
| Brand | Eaton |
|---|---|
| Model | NZMH3-VEF550-NA |
| Catalog Number | 269322 |
| Series | NZM3 |
| Product Type | Molded Case Circuit Breaker |
| Amperage Rating | 550 A |
| Trip Type | Electronic |
| Poles | 3 |
| Handle Type | Rocker Lever |
| Connection Type | Screw Terminal |
| Mounting Method | Fixed (Built-in) |
| Motor Drive | Optional |
| Voltage Rating | 690 V AC |
|---|---|
| Insulation Voltage (Ui) | 1000 V AC |
| Impulse Withstand Voltage | 8 kV (main), 6 kV (auxiliary) |
| Short-Circuit Breaking Capacity | 150 kA @ 400/415 V, 130 kA @ 440 V |
| Short-Circuit Making Capacity | 330 kA @ 400 V |
| Overload Trip Setting (Ir) | 550 A (fixed) |
| Short-Delay Trip Range (Isd) | 775–3850 A |
| Instantaneous Trip Range (Ii) | 1100–4400 A |
| Short-Circuit Break Time | < 10 ms |
| Utilization Category | A (IEC/EN 60947-2) |
| Protection Degree | IP20 (basic), IP66 (with handle) |
| Ambient Temperature | -25 °C to +70 °C |
| Mechanical Lifespan | 15,000 operations |
| Electrical Lifespan | Up to 5000 operations @ 400 V AC-1 |
| Certifications | UL 489, CSA C22.2 No. 5-09, IEC/EN 60947-2, CE, RoHS |
| Dimensions (H×W×D) | 297 mm × 140 mm × 166 mm |
| Weight | 6.34 kg |
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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