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Datasheet generated 2026-10-07
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EFF.SWITCH for Motor 3P 875A (NZMN4-ME875)

Eaton · Electrical Components · Motor Protection Circuit Breakers · Ireland · eaton.com
Part Number
NZMN4-ME875  ·  HS 8536.90
EFF.SWITCH for Motor 3P 875A (NZMN4-ME875)

Eaton NZMN4-ME875 Complete circuit breaker, 400.1600 A. Max.: 690 V 50/60 Hz. EN 60947.

Technical Specifications

Manufacturer part number (MPN)NZMN4-ME875
EAN / GTIN4015082657840
HS code8536.90
Sales unitpcs
Eaton catalogue number265784
Depth401 mm
Height207 mm
Width210 mm
Weight21 kg
CompliancesRoHS conform
CertificationsIEC/EN 60947; IEC
FunctionsPhase failure sensitive; Motor protection
Amperage Rating875 A
ApplicationUse in unearthed supply systems at 525 V
Circuit breaker frame typeNZM4
ConnectionFront screw
Fitted withThermal protection
FrameNZM4
Number of polesThree-pole
Release systemElectronic release
TypeCircuit breaker
Ambient operating temperature - max70 °C
Ambient storage temperature - max70 °C
Ambient operating temperature - min-25 °C
Equipment heat dissipation, current-dependent84.98 W
Rated operational current for specified heat dissipation (In)875 A
Direction of incoming supplyAs required
Electrical connection type of main circuitScrew connection
Handle typeRocker lever
Instantaneous current setting (Ii) - max12250 A
Instantaneous current setting (Ii) - min875 A
Isolation300 V AC (between the auxiliary contacts); 500 V AC (between auxiliary contacts and main contacts)
Lifespan, electrical3000 operations at 415 V AC-1; 2000 operations at 400 V AC-3; 2000 operations at 415 V AC-3; 3000 operations at 400 V AC-1; 1000 operations at 690 V AC-3; 2000 operations at 690 V AC-1
Number of operations per hour - max60
Overload current setting (Ir) - max875 A
Overload current setting (Ir) - min438 A
Overvoltage categoryIII
Pollution degree3
Rated impulse withstand voltage (Uimp) at auxiliary contacts6000 V
Rated impulse withstand voltage (Uimp) at main contacts8000 V
Rated insulation voltage (Ui)1000 V
Rated operating power at AC-3
230 V250 kW
Rated operating power at AC-3
400 V500 kW
Rated operational current588 A (690 V AC-3); 820 A (400 V AC-3)
Rated short-circuit making capacity Icm at 240 V
50/60 Hz105 kA
Rated short-circuit making capacity Icm at 400/415 V
Rated short-circuit making capacity Icm at 440 V
50/60 Hz74 kA
Rated short-circuit making capacity Icm at 525 V
50/60 Hz53 kA
Rated short-circuit making capacity Icm at 690 V
50/60 Hz40 kA
Rated short-time withstand current (t = 0.3 s)19.2 kA
Rated short-time withstand current (t = 1 s)19.2 kA
Short-circuit release non-delayed setting - max12250 A
Short-circuit release non-delayed setting - min1750 A
Short-circuit total breaktime< 25 ms (≦ 415 V); < 35 ms (> 415 V)
Utilization categoryB (IEC/EN 60947-2)
Voltage rating690 V - 690 V
Climatic proofingDamp heat, cyclic, to IEC 60068-2-30; Damp heat, constant, to IEC 60068-2-78
Degree of protectionIP20 (basic degree of protection, in the operating controls area); IP20
Degree of protection (IP), front sideIP66 (with door coupling rotary handle); IP40 (with insulating surround)
Degree of protection (terminations)IP00 (terminations, phase insulator and strip terminal); IP10 (tunnel terminal)
Lifespan, mechanical10000 operations
Mounting MethodFixed; Built-in device fixed built-in technique
Protection against direct contactFinger and back-of-hand proof to VDE 0106 part 100
Shock resistance15 g (half-sinusoidal shock 11 ms)
Switch off techniqueElectronic
Optional terminalsConnection on rear. Strip terminal. Tunnel terminal
Standard terminalsScrew terminal
Terminal capacity (aluminum solid conductor/cable)240 mm² (2x) at rear-side width extension; 50 mm² (4x) at rear-side 2-hole module plate; 70 mm² - 185 mm² (2x) at rear-side 1-hole module plate; 70 mm² - 240 mm² (6x) at rear-side width extension; 185 mm² - 240 mm² (1x) at rear-side 1-hole module plate
Terminal capacity (aluminum stranded conductor/cable)50 mm² - 240 mm² (4x) at 4-hole tunnel terminal
Terminal capacity (control cable)0.75 mm² - 1.5 mm² (2x); 0.75 mm² - 2.5 mm² (1x)
Terminal capacity (copper stranded conductor/cable)120 mm² - 185 mm² (1x) direct at switch rear-side connection; 50 mm² - 185 mm² (4x) direct at switch rear-side connection

Properties

MOQ1

Cross-References

Attached Documents