Eaton circuit breaker NZMN4-ME550
Manufacturer: Eaton
Designation: Circuit breaker 3p, 550A BG4
Type: NZMN4-ME550
Overload release current setting: 275-550 A
Setting range of the instantaneous short-circuit release: 550-7700 A
With thermal protection: Yes
Phase failure sensitive: Yes
Tripping technology: Electronic
Rated operating voltage: 690 V
Rated continuous current Iu: 550 A
Rated operating power at AC-3, 230 V: 160 kW
Rated operating power at AC-3, 400 V: 315 kW
Connection type main circuit: Screw connection
Design of the operating element: Toggle lever
Device type: Built-in device
Fixed mounting technology
With integrated auxiliary switch: No
With integrated undervoltage release: No
Number of poles: 3
Rated short-circuit breaking current Icu at 400 V, AC: 26 kA
Protection class (IP): IP20
Height: 207 mm
Width: 210 mm
Depth: 401 mm

Eaton circuit breaker NZMN4-ME550: further details
The circuit breakers of the NZM..-ME series cover all applications with just four compact sizes and are suitable for the IEC market. Installation is always flexible thanks to modular function groups. It features an electronic trip unit for motor protection with phase failure sensitivity. Notes: IEC/EN 60947-4-1, IEC/EN 60947-2, RMS measurement and thermal memory, adjustable inertia setting tr: 2-20s at 6xIr and infinite (without overload release).