NZMH3-VEF300-NA
269317 NZMH3-VEF300-NA
269317

Circuit-breaker, 3p, 300A
Circuit-breaker NZM3, 3 pole, Switching capacity SCCR 480Y/277 V 60 Hz( Icu ): 100 kA, Switching capacity SCCR 600Y/347 V 60 Hz( Icu ): 50 kA, Switching capacity SCCR 480 V 60 Hz( Icu ): 100 kA, Rated current = rated uninterrupted current (In = Iu ): 300 A, Installation type: Fixed, Screw connection, Standard/Approval: UL/CSA, IEC, Protective function: Systems, cable, selectivity and generator protection

Product range	Circuit-breaker
Protective function	Systems, cable, selectivity and generator protection
Standard/Approval	UL/CSA, IEC
Release system	Electronic release
Installation type	Fixed
Description	Switches conform to UL/CSA as well as the IEC regulations. IEC switching performance values are contained on the rating plate. Fixed overload releases Ir R.m.s. value measurement and “thermal memory” adjustable time delay setting to overcome current peaks tr: 2 – 20 s at 6 x Ir Adjustable delay time tsd: Steps: 0, 20, 60, 100, 200, 300, 500, 750, 1000 ms i2t constant function: switchable
Frame size	NZM3
Number of poles	3 pole
Standard equipment	Screw connection
SCCR 480Y/277 V 60 Hz [Icu]	100 kA
SCCR 480 V 60 Hz [Icu]	100 kA
SCCR 600Y/347 V 60 Hz [Icu]	50 kA
SCCR 600 V 60 Hz [Icu]	50 kA
Rated current = rated uninterrupted current [In = Iu]	300 A
Overload trip [Ir ]Overload release, min. [Ir]	300 A
Short-circuit releases [Irm ] >Non-delayed [Ii = In x …]	2 - 11
Short-circuit releases [Irm ] >Delayed [Isd = Ir x …]	2 - 10
Standards	IEC/EN 60947
Protection against direct contact	Finger and back of hand proof to VDE 0106 Part 100
Climatic proofing	Damp heat, constant, to IEC 60068-2-78 Damp heat, cyclic, to IEC 60068-2-30
Ambient temperature >Ambient temperature, storage	- 40 - + 70 °C
Ambient temperature >Operation	-25 - +70 °C
Mechanical shock resistance (10 ms half-sinusoidal shock) according to IEC 60068-2-27	20 (half-sinusoidal shock 20 ms) g
Safe isolation to EN 61140 >Between auxiliary contacts and main contacts	500 V AC
Safe isolation to EN 61140 >between the auxiliary contacts	300 V AC
Weight	6.34 kg
Mounting position >Mounting position	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
Direction of incoming supply	as required
Degree of protection >Device	In the operating controls area: IP20 (basic degree of protection)
Degree of protection >Enclosures	With insulating surround: IP40 With door coupling rotary handle: IP66
Degree of protection >Terminations	Tunnel terminal: IP10 Phase isolator and strip terminal: IP00
Other technical data (sheet catalogue)	Weight Temperature dependency, Derating Effective power loss
Rated surge voltage invariability [Uimp ] >Main contacts	8000 V
Rated surge voltage invariability [Uimp ] >Auxiliary contacts	6000 V
Rated operational voltage [Ue]	690 V AC
Overvoltage category/pollution degree	III/3
Rated insulation voltage [Ui ]	1000 V
Use in unearthed supply systems	≦ 690 V
Rated short-circuit making capacity [Icm ] >240 V [Icm ]	330 kA
Rated short-circuit making capacity [Icm ] >400/415 V [Icm ]	330 kA
Rated short-circuit making capacity [Icm ] >440 V 50/60 Hz [Icm ]	286 kA
Rated short-circuit making capacity [Icm ] >525 V 50/60 Hz [Icm ]	143 kA
Rated short-circuit making capacity [Icm ] >690 V 50/60 H [Ic]	74 kA
Rated short-circuit breaking capacity Icn [Icn ] >Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >240 V 50/60 Hz [Icu ]	150 kA
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 ]	150 kA
Rated short-circuit breaking capacity Icn [Icn ] >Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >440 V 50/60 Hz [Icu ]	130 kA
Rated short-circuit breaking capacity Icn [Icn ] >Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >525 V 50/60 Hz [Icu ]	12 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 ]	12 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 ]	150 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 ]	150 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 ]	130 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 ]	3 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]	9 kA
Rated short-circuit breaking capacity Icn [Icn ]	Maximum back-up fuse, if the expected short-circuit currents at the installation location exceed the switching capacity of the circuit-breaker.
Technical data that diverge from products for the IEC market Switching capacity of NA switches (UL489, CSA 22.2 No. 5.1) Short-circuit current rating SCCR >SCCR 240 V 60 Hz [Icu]	150 kA
Technical data that diverge from products for the IEC market Switching capacity of NA switches (UL489, CSA 22.2 No. 5.1) Short-circuit current rating SCCR >SCCR 480Y/277 V 60 Hz [Icu]	100 kA
Technical data that diverge from products for the IEC market Switching capacity of NA switches (UL489, CSA 22.2 No. 5.1) Short-circuit current rating SCCR >SCCR 480 V 60 Hz [Icu]	100 kA
Technical data that diverge from products for the IEC market Switching capacity of NA switches (UL489, CSA 22.2 No. 5.1) Short-circuit current rating SCCR >SCCR 600Y/347 V 60 Hz [Icu]	50 kA
Technical data that diverge from products for the IEC market Switching capacity of NA switches (UL489, CSA 22.2 No. 5.1) Short-circuit current rating SCCR >SCCR 600 V 60 Hz [Icu]	50 kA
Rated short-time withstand current >t = 0.3 s [Icw ]	3.3 kA
Rated short-time withstand current >t = 1 s [Icw ]	3.3 kA
Utilization category to IEC/EN 60947-2	A
Lifespan, mechanical(of which max. 50 % trip by shunt/undervoltage release) [Operations]	15000
Lifespan, electrical >AC-1 >400 V 50/60 Hz [Operations]	5000
Lifespan, electrical >AC-1 >690 V 50/60 Hz [Operations]	3000
Lifespan, electrical >AC--3 >400 V 50/60 Hz [Operations]	2000
Lifespan, electrical >AC--3 >415 V 50/60 Hz [Operations]	2000
Lifespan, electrical >AC--3 >690 V 50/60 Hz [Operations]	2000
Lifespan, electrical >Max. operating frequency	60 Ops/h
Total break time at short-circuit	< 10 ms
Standard equipment	Screw connection
Round copper conductor >Box terminal >Stranded	1 x (2 - 500) mm2
Round copper conductor >Tunnel terminal >Solid	1 x (16 - 185) mm2
Round copper conductor >Tunnel terminal >Stranded >Stranded	1 x (4 - 350) mm2
Round copper conductor >Tunnel terminal >Stranded >Double hole	1 x (0 - 500) 2 x (0 - 500) mm2
Round copper conductor >Bolt terminal and rear-side connection >Direct on the switch >Stranded	1 x (4 - 350) 2 x 350 mm2
Round copper conductor >Bolt terminal and rear-side connection >Connection width extension >Connection width extension	2 x 500 mm2
Al conductors, Cu cable >Tunnel terminal >Solid	1 x 16 mm2
Al conductors, Cu cable >Tunnel terminal >Stranded >Double hole	1 x (0 - 500) 2 x (0 - 500) mm2
Al conductors, Cu cable >Bolt terminal and rear-side connection >Flat copper strip, with holes [min.]	6 x 16 x 0.8 mm
Al conductors, Cu cable >Bolt terminal and rear-side connection >Flat copper strip, with holes [max.]	10 x 32 x 1.0 + 5 x 32 x 1.0 mm
Al conductors, Cu cable >Bolt terminal and rear-side connection >Connection width extension	(2 x) 10 x 50 x 1.0 mm
Cu strip (number of segments x width x segment thickness) >Box terminal [min.]	6 x 16 x 0.8 mm
Cu strip (number of segments x width x segment thickness) >Box terminal [max.]	10 x 24 x 1.0 + 5 x 24 x 1.0 (2 x) 8 x 24 x 1.0 mm
Cu strip (number of segments x width x segment thickness) >Bolt terminal and rear-side connection >Flat copper strip, with holes [min.]	6 x 16 x 0.8 mm
Cu strip (number of segments x width x segment thickness) >Bolt terminal and rear-side connection >Flat copper strip, with holes [max.]	10 x 32 x 1.0 + 5 x 32 x 1.0 mm
Cu strip (number of segments x width x segment thickness) >Bolt terminal and rear-side connection >Connection width extension	(2 x) 10 x 50 x 1.0 mm
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Screw connection	M10
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Direct on the switch [min.]	20 x 5 mm
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Connection width extension >Connection width extension [max.]	2 x (10 x 50) mm
Control cables	1 x (18 - 14) 2 x (18 - 16) mm2
Rated operational current for specified heat dissipation [In]	300 A
Equipment heat dissipation, current-dependent [Pvid]	27 W
Operating ambient temperature min.	-25 °C
Operating ambient temperature max.	+70 °C
10.2 Strength of materials and parts >10.2.2 Corrosion resistance	Meets the product standard´s requirements.
10.2 Strength of materials and parts >10.2.3.1 Verification of thermal stability of enclosures	Meets the product standard´s requirements.
10.2 Strength of materials and parts >10.2.3.2 Verification of resistance of insulating materials to normal heat	Meets the product standard´s requirements.
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	Meets the product standard´s requirements.
10.2 Strength of materials and parts >10.2.4 Resistance to ultra-violet (UV) radiation	Meets the product standard´s requirements.
10.2 Strength of materials and parts >10.2.5 Lifting	Does not apply, since the entire switchgear needs to be evaluated.
10.2 Strength of materials and parts >10.2.6 Mechanical impact	Does not apply, since the entire switchgear needs to be evaluated.
10.2 Strength of materials and parts >10.2.7 Inscriptions	Meets the product standard´s requirements.
10.3 Degree of protection of ASSEMBLIES	Does not apply, since the entire switchgear needs to be evaluated.
10.4 Clearances and creepage distances	Meets the product standard´s requirements.
10.5 Protection against electric shock	Does not apply, since the entire switchgear needs to be evaluated.
10.6 Incorporation of switching devices and components	Does not apply, since the entire switchgear needs to be evaluated.
10.7 Internal electrical circuits and connections	Is the panel builder´s responsibility.
10.8 Connections for external conductors	Is the panel builder´s responsibility.
10.9 Insulation properties >10.9.2 Power-frequency electric strength	Is the panel builder´s responsibility.
10.9 Insulation properties >10.9.3 Impulse withstand voltage	Is the panel builder´s responsibility.
10.9 Insulation properties >10.9.4 Testing of enclosures made of insulating material	Is the panel builder´s responsibility.
10.10 Temperature rise	The panel builder is responsible for the temperature rise calculation. Eaton will provide heat dissipation data for the devices.
10.11 Short-circuit rating	Is the panel builder´s responsibility. The specifications for the switchgear must be observed.
10.12 Electromagnetic compatibility	Is the panel builder´s responsibility. The specifications for the switchgear must be observed.
10.13 Mechanical function	The device meets the requirements, provided the information in the instruction leaflet (IL) is observed.
Rated permanent current Iu	300 A
Rated voltage	690 - 690 V
Rated short-circuit breaking capacity lcu at 400 V, 50 Hz	150 kA
Overload release current setting	300 - 300 A
Adjustment range short-term delayed short-circuit release	600 - 3000 A
Adjustment range undelayed short-circuit release	600 - 3300 A
Integrated earth fault protection	No
Type of electrical connection of main circuit	Screw connection
Device construction	Built-in device fixed built-in technique
Suitable for DIN rail (top hat rail) mounting	No
DIN rail (top hat rail) mounting optional	No
Number of auxiliary contacts as normally closed contact	0
Number of auxiliary contacts as normally open contact	0
Number of auxiliary contacts as change-over contact	0
With switched-off indicator	No
With under voltage release	No
Number of poles	3
Position of connection for main current circuit	Front side
Type of control element	Rocker lever
Complete device with protection unit	Yes
Motor drive integrated	No
Motor drive optional	Yes
Degree of protection (IP)	IP20
Product Standards	UL 489; CSA-C22.2 No. 5-09; IEC 60947-2; CE marking
UL File No.	E31593
UL Category Control No.	DIVQ
CSA File No.	022086
CSA Class No.	1432-01
North America Certification	UL listed, CSA certified
Specially designed for North America	Yes
Suitable for	Feeder circuits, branch circuits
Current Limiting Circuit-Breaker	Yes
Max. Voltage Rating	600 V
Degree of Protection	IEC: IP20; UL/CSA Type: -
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