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Eaton Cutler-Hammer NZM Series NZMB1-A50-NA

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NZMB1-A50-NA

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The NZMB1-A50-NA from Eaton Cutler-Hammer is a molded case circuit breaker that can handle continuous currents up to 50 A. It operates at rated voltages of 440 V AC and 480Y/277 V AC, and offers thermal magnetic trip capabilities.

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Technical specifications for NZMB1-A50-NA

ManufacturerEaton Cutler-Hammer
Product TypeMolded Case Circuit Breaker
Product LineNZM Series
Part NumberNZMB1-A50-NA
Rated Continuous Current50 A
Rated Operational Voltage440 V AC / 480Y/277 V AC
Rated Insulation Voltage690 V AC
Short-Circuit Rating at 480 VAC25 kAIC
Trip Unit TypeThermal Magnetic
Overload Release Current Setting40 A – 50 A
Terminal TypeBox / Frame Clamp Terminals
IP RatingIP20
Control Element TypeToggle / Rocker Lever
Relative Humidity5 to 95% (Non-Condensing)
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The NZMB1-A50-NA is a molded case circuit breaker manufactured by Eaton Cutler-Hammer, designed to provide reliable electrical protection in various applications. Rated for continuous current at 50 Amps, this circuit breaker functions at operational voltages of 440 V AC and 480Y/277 V AC. Built to withstand insulation up to 690 V AC, it ensures robust operational stability.

The device features a thermal magnetic trip unit type that includes settings for overload release current adjustable from 40 A to 50 A, providing flexible protection options based on specific needs. Short-circuit protection is equally impressive with a 25 kAIC rating at 480 VAC, enhancing its reliability during fault conditions.

Weighing 2.36 lbs, the circuit breaker is designed with box or frame clamp terminals for robust connections. It incorporates a toggle or rocker lever as the control element allowing for user-friendly operation. This unit operates effectively within an ambient relative humidity of 5 to 95%, ensuring it remains functional in different environmental conditions. The IP20 rating confirms that this breaker is suitable for installation in protected environments, maximizing its application potential.