NZMN1-A50
259082 NZMN1-A50
259082

Circuit-breaker, 3p, 50A
Circuit-breaker NZM1, 3 pole, Switching capacity 400/415 V 50 Hz( Icu ): 50 kA, Rated current = rated uninterrupted current Rated current = rated uninterrupted current( In = Iu ): 50 A, Installation type: Fixed, Box terminal, Standard/Approval: IEC, Protective function: System and cable protection

Product range	Circuit-breaker
Protective function	System and cable protection
Standard/Approval	IEC
Installation type	Fixed
Release system	Thermomagnetic release
Construction size	NZM1
Number of poles	3 pole
Standard equipment	Box terminal
400/415 V 50 Hz [Icu ]
Rated current = rated uninterrupted current [In = Iu]	50 kA
Overload trip [Ir ] 40 - 50 A Short-circuit releases [Irm ] >Non-delayed [Ii = In x …]
Short-circuit releases [Irm ]	50 A
Standards
Protection against direct contact	40 - 50 A
Climatic proofing	6 - 10
Ambient temperature >Ambient temperature, storage	300 - 500 A
Ambient temperature >Operation
Mechanical shock resistance (10 ms half-sinusoidal shock) according to IEC 60068-2-27	IEC/EN 60947
Safe isolation to EN 61140 >Between auxiliary contacts and main contacts	Finger and back of hand proof to VDE 0106 Part 100
Safe isolation to EN 61140 >between the auxiliary contacts	Damp heat, constant, to IEC 60068-2-78 Damp heat, cyclic, to IEC 60068-2-30
Mounting position	- 40 - + 70 °C
Direction of incoming supply	-25 - +70 °C
Degree of protection >Device	20 (half-sinusoidal shock 20 ms) g
Degree of protection >Enclosures	500 V AC
Degree of protection >Terminations	300 V AC
Other technical data (sheet catalogue)	Vertical and 90° in all directions   With XFI earth-fault release: - NZM1, N1, NZM2, N2: vertical and 90° in all directions with plug-in unit - NZM1, N1, NZM2, N2: vertical, 90° right/left with withdrawable unit: - NZM3, N3: vertical, 90° right/left - NZM4, N4: vertical with remote operator: - NZM2, N(S)2, NZM3, N(S)3, NZM4, N(S)4: vertical and 90° in all directions
Rated current = rated uninterrupted current [In = Iu]	as required
Rated surge voltage invariability [Uimp ] >Main contacts	In the operating controls area: IP20 (basic degree of protection)
Rated surge voltage invariability [Uimp ] >Auxiliary contacts	With insulating surround: IP40 With door coupling rotary handle: IP66
Rated operational voltage [Ue]	Tunnel terminal: IP10 Phase isolator and strip terminal: IP00
Rated operational voltage [Ue]	Temperature dependency, Derating
Overvoltage category/pollution degree
Rated insulation voltage [Ui ]	50 A
Use in unearthed supply systems	6000 V
Rated short-circuit making capacity [Icm ] >240 V [Icm ]	6000 V
Rated short-circuit making capacity [Icm ] >400/415 V [Icm ]	690 V AC
Rated short-circuit making capacity [Icm ] >440 V 50/60 Hz [Icm ]	450 V DC
Rated short-circuit making capacity [Icm ] >525 V 50/60 Hz [Icm ]	The following settings are required in order to ensure correct tripping: The fast-response release will take longer to respond when used for DC applications. Because of this, the setting on the trip block inscription, which is specified for AC currents, must be set to a lower value for DC currents. DC correction factor for instantaneous release response value: o NZM1: 1.25 o NZM2: 1.35 o NZM3: 1.45 Example: NZM3 Ie = 500A. Desired DC tripping current: 10 * Ie = 5000A. Calculation: • Desired DC value / correction factor = AC setting on trip block • 5000A / 1.45 = 3448 A ~ 7 * Ie = Value that needs to be set on the trip block Permitted circuit configurations:
Rated short-circuit making capacity [Icm ] >690 V 50/60 H [Ic]	III/3
Rated short-circuit breaking capacity Icn [Icn ] >Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >240 V 50/60 Hz [Icu ]	690 V
Rated short-circuit breaking capacity Icn [Icn ] >Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >400/415 V 50/60 Hz [Icu ]	≦ 690 V
Rated short-circuit breaking capacity Icn [Icn ] >Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >440 V 50/60 Hz [Icu ]
Rated short-circuit breaking capacity Icn [Icn ] >Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >525 V 50/60 Hz [Icu ]	187 kA
Rated short-circuit breaking capacity Icn [Icn ] >Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >690 V 50/60 Hz [Icu ]	105 kA
Rated short-circuit breaking capacity Icn [Icn ] >Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >500 V DC [Icu]	74 kA
Rated short-circuit breaking capacity Icn [Icn ] >Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics] >240 V 50/60 Hz [Ics ]	40 kA
Rated short-circuit breaking capacity Icn [Icn ] >Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics] >400/415 V 50/60 Hz [Ics ]	17 kA
Rated short-circuit breaking capacity Icn [Icn ] >Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics] >440 V 50/60 Hz [Ics ]	85 kA
Rated short-circuit breaking capacity Icn [Icn ] >Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics] >525 V 50/60 Hz [Ics ]	50 kA
Rated short-circuit breaking capacity Icn [Icn ] >Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics] >690 V 50/60 Hz [Ics]	35 kA
Rated short-circuit breaking capacity Icn [Icn ] >Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics] >450 V DC [Ics]	20 kA
Rated short-circuit breaking capacity Icn [Icn ]	10 kA
Utilization category to IEC/EN 60947-2	15 kA
Lifespan, mechanical(of which max. 50 % trip by shunt/undervoltage release) [Operations]	85 kA
Lifespan, electrical >AC-1 >400 V 50/60 Hz [Operations]	50 kA
Lifespan, electrical >AC-1 >415 V 50/60 Hz [Operations]	35 kA
Lifespan, electrical >AC-1 >690 V 50/60 Hz [Operations]	10 kA
Lifespan, electrical >DC-1 >450 V DC [Operations]	7.5 kA
Lifespan, electrical >Max. operating frequency	15 kA
Total break time at short-circuit	Maximum back-up fuse, if the expected short-circuit currents at the installation location exceed the switching capacity of the circuit-breaker.
Standard equipment	A
Optional accessories	20000
Round copper conductor >Box terminal >Solid	10000
Round copper conductor >Box terminal >Stranded	10000
Round copper conductor >Box terminal	7500
Round copper conductor >Tunnel terminal >Solid	10000
Round copper conductor >Tunnel terminal >Stranded >1-hole	120 Ops/h
Round copper conductor >Bolt terminal and rear-side connection >Direct on the switch >Solid	< 10 ms
Round copper conductor >Bolt terminal and rear-side connection >Direct on the switch >Stranded
Round copper conductor >Bolt terminal and rear-side connection >Direct on the switch	Box terminal
Al circular conductor >Tunnel terminal >Solid	Screw connection Tunnel terminal connection on rear
Al circular conductor >Tunnel terminal >Stranded >Stranded	1 x (10 - 16) 2 x (6 - 16) mm2
Al circular conductor >Bolt terminal and rear-side connection >Direct on the switch >Solid	1 x (10 - 70) 3) 2 x (6-25) mm2
Al circular conductor >Bolt terminal and rear-side connection >Direct on the switch >Stranded	3) Up to 95 mm² can be connected depending on the cable manufacturer.
Cu strip (number of segments x width x segment thickness) >Box terminal [min.]	1 x 16 mm2
Cu strip (number of segments x width x segment thickness) >Box terminal [max.]	1 x (25 - 95) mm2
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Screw connection	1 x (10 - 16) 2 x (6 - 16) mm2
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Direct on the switch [min.]	1 x (10 - 70) 3) 2 x 25 mm2
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Direct on the switch [max.]	3) Up to 95 mm² can be connected depending on the cable manufacturer.
Control cables	1 x 16 mm2
Rated operational current for specified heat dissipation [In]	1 x (25 - 95) mm2
Equipment heat dissipation, current-dependent [Pvid]	1 x (10 - 16) 2 x (10 - 16) mm2
Operating ambient temperature min.	1 x (25 - 35) 2 x (25 - 35) mm2
Operating ambient temperature max.	2 x 9 x 0.8 mm
10.2 Strength of materials and parts >10.2.2 Corrosion resistance	9 x 9 x 0.8 mm
10.2 Strength of materials and parts >10.2.3.1 Verification of thermal stability of enclosures	M6
10.2 Strength of materials and parts >10.2.3.2 Verification of resistance of insulating materials to normal heat	12 x 5 mm
10.2 Strength of materials and parts >10.2.3.3 Verification of resistance of insulating materials to abnormal heat and fire due to internal electric effects	16 x 5 mm
10.2 Strength of materials and parts >10.2.4 Resistance to ultra-violet (UV) radiation	1 x (0.75 - 2.5) 2 x (0.75 - 1.5) mm2
10.2 Strength of materials and parts >10.2.5 Lifting
10.2 Strength of materials and parts >10.2.6 Mechanical impact	50 A
10.2 Strength of materials and parts >10.2.7 Inscriptions	13.2 W
10.3 Degree of protection of ASSEMBLIES	-25 °C
10.4 Clearances and creepage distances	+70 °C
10.5 Protection against electric shock
10.6 Incorporation of switching devices and components	Meets the product standard´s requirements.
10.7 Internal electrical circuits and connections	Meets the product standard´s requirements.
10.8 Connections for external conductors	Meets the product standard´s requirements.
10.9 Insulation properties >10.9.2 Power-frequency electric strength	Meets the product standard´s requirements.
10.9 Insulation properties >10.9.3 Impulse withstand voltage	Meets the product standard´s requirements.
10.9 Insulation properties >10.9.4 Testing of enclosures made of insulating material	Does not apply, since the entire switchgear needs to be evaluated.
10.10 Temperature rise	Does not apply, since the entire switchgear needs to be evaluated.
10.11 Short-circuit rating	Meets the product standard´s requirements.
10.12 Electromagnetic compatibility	Does not apply, since the entire switchgear needs to be evaluated.
10.13 Mechanical function	Meets the product standard´s requirements.
Rated permanent current Iu	Does not apply, since the entire switchgear needs to be evaluated.
Rated voltage	Does not apply, since the entire switchgear needs to be evaluated.
Rated short-circuit breaking capacity lcu at 400 V, 50 Hz	Is the panel builder´s responsibility.
Overload release current setting	Is the panel builder´s responsibility.
Adjustment range short-term delayed short-circuit release	Is the panel builder´s responsibility.
Adjustment range undelayed short-circuit release	Is the panel builder´s responsibility.
Integrated earth fault protection	Is the panel builder´s responsibility.
Type of electrical connection of main circuit	The panel builder is responsible for the temperature rise calculation. Eaton will provide heat dissipation data for the devices.
Device construction	Is the panel builder´s responsibility. The specifications for the switchgear must be observed.
Suitable for DIN rail (top hat rail) mounting	Is the panel builder´s responsibility. The specifications for the switchgear must be observed.
DIN rail (top hat rail) mounting optional	The device meets the requirements, provided the information in the instruction leaflet (IL) is observed.
Number of auxiliary contacts as normally closed contact
Number of auxiliary contacts as normally open contact
Number of auxiliary contacts as change-over contact	50 A
With switched-off indicator	690 - 690 V
With under voltage release	50 kA
Number of poles	40 - 50 A
Position of connection for main current circuit	0 - 0 A
Type of control element	300 - 500 A
Complete device with protection unit	No
Motor drive integrated	Frame clamp
Motor drive optional	Built-in device fixed built-in technique
Degree of protection (IP)	No
Characteristic curve	Yes
Characteristic curve	0
Characteristic curve	0

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