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Eaton / Moeller Series
50A, 4P, circuit breaker, thermomagnetic, IEC
The Eaton Moeller NZM1-4-A50 is a 4-pole molded case circuit breaker with a rated current of 50 A and a thermomagnetic trip unit. Designed for voltages up to 690 V, this device offers excellent protection with a short-circuit breaking capacity up to 100 kA at 230 V. It is ideal for system and cable protection in industrial environments. The circuit breaker meets IEC/EN 60947 standards, is RoHS conformant, and can be DIN rail or fixed mounted. It features robust thermal and mechanical endurance, finger-safe terminals, and is built to withstand extreme operating conditions including temperatures from -25 °C to +70 °C. The unit is front-operated via a rocker handle and supports a range of copper and aluminum cable connections.
Country of Origin: DE
We source directly from Eaton - 100% genuine, new-in-box certified parts.
| Brand | Eaton Moeller |
|---|---|
| Model | NZM1-4-A50 |
| Catalog Number | 284424 |
| Product Type | Molded Case Circuit Breaker |
| Release Type | Thermomagnetic |
| Amperage Rating | 50 A |
| Number of Poles | 4 |
| Frame Size | NZM1 |
| Handle Type | Rocker lever |
| Mounting Method | Fixed (DIN rail optional) |
| Utilization Category | A (IEC/EN 60947-2) |
| Function | System and cable protection |
| Product Dimensions (H×W×D) | 145 mm × 120 mm × 84.5 mm |
| Weight | 1.325 kg |
| Certifications | IEC/EN 60947, RoHS conform |
| Voltage Rating | 690 V AC |
|---|---|
| Rated Insulation Voltage (Ui) | 690 V |
| Rated Impulse Withstand Voltage (Uimp) | 6000 V |
| Overload Current Setting (Ir) | 40–50 A |
| Short-Circuit Release Setting | 300–500 A |
| Short-Circuit Breaking Capacity Ics (230 V) | 100 kA |
| Short-Circuit Breaking Capacity Ics (400/415 V) | 50 kA |
| Short-Circuit Breaking Capacity Ics (690 V) | 7.5 kA |
| Short-Circuit Making Capacity Icm (400/415 V) | 220 kA |
| Power Loss | 13.2 W |
| Heat Dissipation (Current Dependent) | 13.2 W |
| Mechanical Lifespan | 20,000 operations |
| Electrical Lifespan (400–415 V) | 10,000 operations |
| Max Operations per Hour | 120 |
| Ambient Temperature Range (Operating) | -25 °C to +70 °C |
| Degree of Protection (Front) | IP40/IP66 (with handle) |
| Degree of Protection (Terminals) | IP00–IP10 |
| Terminal Types | Box, tunnel, rear screw |
| Cable Terminal Capacity | Up to 95 mm² (copper/aluminum) |
| Isolation Voltage (Auxiliary/Main) | 300 V / 500 V |
| Shock Resistance | 20 g / 20 ms |
| Pollution Degree | 3 |
| Overvoltage Category | III |
| Standards | IEC/EN 60947-2 |
| Climatic Proofing | IEC 60068-2-78, -2-30 (Damp Heat) |
| Direction of Incoming Supply | As required |
| Auxiliary Contacts | 0 (can be added) |
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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