NZMH2-A25
281282 NZMH2-A25
281282

Circuit-breaker, 3p, 25A
Circuit-breaker NZM2, 3 pole, Switching capacity 400/415 V 50 Hz( Icu ): 150 kA, Rated current = rated uninterrupted current Rated current = rated uninterrupted current( In = Iu ): 25 A, Installation type: Fixed, Screw connection, 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	NZM2
Number of poles	3 pole
Standard equipment	Screw connection
400/415 V 50 Hz [Icu ]	150 kA
Rated current = rated uninterrupted current [In = Iu]	25 A
Overload trip [Ir ] 20 - 25 A Short-circuit releases [Irm ] >Non-delayed [Ii = In x …]	20 - 25 A
Short-circuit releases [Irm ] >min.	350 A fixed
Standards	350 A
Protection against direct contact	IEC/EN 60947
Climatic proofing	Finger and back of hand proof to VDE 0106 Part 100
Ambient temperature >Ambient temperature, storage	Damp heat, constant, to IEC 60068-2-78 Damp heat, cyclic, to IEC 60068-2-30
Ambient temperature >Operation	- 40 - + 70 °C
Mechanical shock resistance (10 ms half-sinusoidal shock) according to IEC 60068-2-27	-25 - +70 °C
Safe isolation to EN 61140 >Between auxiliary contacts and main contacts	20 (half-sinusoidal shock 20 ms) g
Safe isolation to EN 61140 >between the auxiliary contacts	500 V AC
Weight	300 V AC
Mounting position	2.345 kg
Direction of incoming supply	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
Degree of protection >Device	as required
Degree of protection >Enclosures	In the operating controls area: IP20 (basic degree of protection)
Degree of protection >Terminations	With insulating surround: IP40 With door coupling rotary handle: IP66
Other technical data (sheet catalogue)	Tunnel terminal: IP10 Phase isolator and strip terminal: IP00
Rated current = rated uninterrupted current [In = Iu]	Temperature dependency, Derating
Rated surge voltage invariability [Uimp ] >Main contacts	25 A
Rated surge voltage invariability [Uimp ] >Auxiliary contacts	8000 V
Rated operational voltage [Ue]	6000 V
Rated operational voltage [Ue]	690 V AC
Overvoltage category/pollution degree	750 V DC
Rated insulation voltage [Ui ]	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:
Use in unearthed supply systems	III/3
Rated short-circuit making capacity [Icm ] >240 V [Icm ]	1000 V
Rated short-circuit making capacity [Icm ] >400/415 V [Icm ]	≦ 690 V
Rated short-circuit making capacity [Icm ] >440 V 50/60 Hz [Icm ]	330 kA
Rated short-circuit making capacity [Icm ] >525 V 50/60 Hz [Icm ]	330 kA
Rated short-circuit making capacity [Icm ] >690 V 50/60 H [Ic]	286 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 ]	105 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 ]	40 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 ]	150 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 ]	150 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 ]	130 kA
Rated short-circuit breaking capacity Icn [Icn ] >Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >500 V DC [Icu]	50 kA
Rated short-circuit breaking capacity Icn [Icn ] >Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >750 V DC [Icu]	20 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 ]	60 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 ]	60 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 ]	150 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 ]	150 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]	130 kA
Rated short-circuit breaking capacity Icn [Icn ] >Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics] >500 V DC [Ics]	37.5 kA
Rated short-circuit breaking capacity Icn [Icn ] >Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics] >750 V DC [Ics]	5 kA
Rated short-circuit breaking capacity Icn [Icn ]	15 kA
Rated short-time withstand current >t = 0.3 s [Icw ]	15 kA
Rated short-time withstand current >t = 1 s [Icw ]	Maximum back-up fuse, if the expected short-circuit currents at the installation location exceed the switching capacity of the circuit-breaker.
Utilization category to IEC/EN 60947-2	1.9 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]	A
Lifespan, electrical >AC-1 >415 V 50/60 Hz [Operations]	20000
Lifespan, electrical >AC-1 >690 V 50/60 Hz [Operations]	10000
Lifespan, electrical >AC--3 >400 V 50/60 Hz [Operations]	10000
Lifespan, electrical >AC--3 >415 V 50/60 Hz [Operations]	7500
Lifespan, electrical >AC--3 >690 V 50/60 Hz [Operations]	6500
Lifespan, electrical >DC-1 >500 V DC [Operations]	6500
Lifespan, electrical >DC-1 >750 V DC [Operations]	5000
Lifespan, electrical >DC - 3 >500 V DC [Operations]	7500
Lifespan, electrical >DC - 3 >750 V DC [Operations]	7500
Lifespan, electrical >Max. operating frequency	3000
Total break time at short-circuit	3000
Standard equipment	120 Ops/h
Optional accessories	< 10 ms
Round copper conductor >Box terminal >Solid	Screw connection
Round copper conductor >Box terminal >Stranded	Box terminal Tunnel terminal connection on rear
Round copper conductor >Tunnel terminal >Solid	1 x (10 - 16) 2 x (6 - 16) mm2
Round copper conductor >Tunnel terminal >Stranded >1-hole	1 x (25 - 185) 2 x (25 - 70) mm2
Round copper conductor >Bolt terminal and rear-side connection >Direct on the switch >Solid	1 x 16 mm2
Round copper conductor >Bolt terminal and rear-side connection >Direct on the switch >Stranded	1 x (25 - 185) mm2
Al circular conductor >Tunnel terminal >Solid	1 x (10 - 16) 2 x (6 - 16) mm2
Al circular conductor >Tunnel terminal >Stranded >Stranded	1 x (25 - 185) 2 x (25 - 70) mm2
Al circular conductor >Bolt terminal and rear-side connection >Direct on the switch >Solid	1 x 16 mm2
Al circular conductor >Bolt terminal and rear-side connection >Direct on the switch >Stranded	1 x (25 - 185) mm2
Cu strip (number of segments x width x segment thickness) >Box terminal [min.]	1 x (10 - 16) 2 x (10 - 16) mm2
Cu strip (number of segments x width x segment thickness) >Box terminal [max.]	1 x (25 - 50) 2 x (25 - 50) mm2
Cu strip (number of segments x width x segment thickness) >Bolt terminal and rear-side connection >Flat copper strip, with holes [min.]	2 x 9 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 16 x 0.8 (2x) 8 x 15.5 x 0,8 mm
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Screw connection	2 x 16 x 0.8 mm
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Direct on the switch [min.]	10 x 24 x 0.8 mm
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Direct on the switch [max.]	M8
Control cables	16 x 5 mm
Rated operational current for specified heat dissipation [In]	24 x 8 mm
Equipment heat dissipation, current-dependent [Pvid]	1 x (0.75 - 2.5) 2 x (0.75 - 1.5) mm2
Operating ambient temperature min.	25 A
Operating ambient temperature max.	7.97 W
10.2 Strength of materials and parts >10.2.2 Corrosion resistance	-25 °C
10.2 Strength of materials and parts >10.2.3.1 Verification of thermal stability of enclosures	+70 °C
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	Meets the product standard´s requirements.
10.2 Strength of materials and parts >10.2.6 Mechanical impact	Meets the product standard´s requirements.
10.2 Strength of materials and parts >10.2.7 Inscriptions	Does not apply, since the entire switchgear needs to be evaluated.
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	Meets the product standard´s requirements.
10.7 Internal electrical circuits and connections	Does not apply, since the entire switchgear needs to be evaluated.
10.8 Connections for external conductors	Does not apply, since the entire switchgear needs to be evaluated.
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	Is the panel builder´s responsibility.
10.11 Short-circuit rating	Is the panel builder´s responsibility.
10.12 Electromagnetic compatibility	The panel builder is responsible for the temperature rise calculation. Eaton will provide heat dissipation data for the devices.
10.13 Mechanical function	Is the panel builder´s responsibility. The specifications for the switchgear must be observed.
Rated permanent current Iu	Is the panel builder´s responsibility. The specifications for the switchgear must be observed.
Rated voltage	The device meets the requirements, provided the information in the instruction leaflet (IL) is observed.
Rated short-circuit breaking capacity lcu at 400 V, 50 Hz	25 A
Overload release current setting	690 - 690 V
Adjustment range short-term delayed short-circuit release	150 kA
Adjustment range undelayed short-circuit release	20 - 25 A
Integrated earth fault protection	0 - 0 A
Type of electrical connection of main circuit	350 - 350 A
Device construction	No
Suitable for DIN rail (top hat rail) mounting	Screw connection
DIN rail (top hat rail) mounting optional	Built-in device fixed built-in technique
Number of auxiliary contacts as normally closed contact	No
Number of auxiliary contacts as normally open contact	Yes
Number of auxiliary contacts as change-over contact	0
With switched-off indicator	0
With under voltage release	0
Number of poles	No
Position of connection for main current circuit	No
Type of control element	3
Complete device with protection unit	Front side
Motor drive integrated	Rocker lever
Motor drive optional	Yes
Degree of protection (IP)	No
Characteristic curve	Yes
Characteristic curve	IP20
Characteristic curve

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