NZMH2-ME140-BT-NA
142425 NZMH2-ME140-BT-NA
142425

Circuit-breaker, 3p, 140A, box terminals
Circuit-breakers of the NZM..-ME..NA series cover all applications with only four compact sizes and are suitable for the IEC market. The mounting is always flexible due to the modular function groups. With electronic release for the motor protection with phase failure sensitivity. Notes: switches conform to UL/CSA as well as the IEC regulations. IEC switching performance values are contained on the rating plate. 100% rated. For use in motor circuits with contactor. additional motor protective characteristics (calibration) to UL508, CSA-C22.2 No. 14-05. Adjustable overload releases Ir, adjustable time delay setting to overcome current peaks tr:2-20s at 6xIr

Product range	Circuit-breaker
Protective function	Motor protection
Standard/Approval
Installation type	UL/CSA, IEC
Release system	Fixed
Construction size	Electronic release
Description	NZM2
Number of poles	Switches conform to UL/CSA as well as the IEC regulations. IEC switching performance values are contained on the rating plate. 100% rated For use in motor circuits with contactor. Additional motor protective characteristics (calibration) to UL508, CSA-C22.2 No. 14-05. Adjustable overload releases Ir adjustable time delay setting to overcome current peaks tr: 2 – 20 s at 6 x Ir
Standard equipment	3 pole
Rated current = rated uninterrupted current [In = Iu]	Box terminal
SCCR 480Y/277 V 60 Hz [Icu]	140 A
SCCR 480 V 60 Hz [Icu]	100 kA
Overload trip [Ir ] 70 - 140 A Short-circuit releases [Irm ] >Non-delayed [Ii = In x …]	100 kA
Motor power [460 V 480 V]	70 - 140 A
Standards	2 - 14
Protection against direct contact	100 HP
Climatic proofing	IEC/EN 60947
Ambient temperature >Ambient temperature, storage	Finger and back of hand proof to VDE 0106 Part 100
Ambient temperature >Operation	Damp heat, constant, to IEC 60068-2-78 Damp heat, cyclic, to IEC 60068-2-30
Mechanical shock resistance (10 ms half-sinusoidal shock) according to IEC 60068-2-27	- 40 - + 70 °C
Safe isolation to EN 61140 >Between auxiliary contacts and main contacts	-25 - +70 °C
Safe isolation to EN 61140 >between the auxiliary contacts	20 (half-sinusoidal shock 20 ms) g
Weight	500 V AC
Mounting position >Mounting position	300 V AC
Direction of incoming supply	2.345 kg
Degree of protection >Device	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 >Enclosures	as required
Degree of protection >Terminations	In the operating controls area: IP20 (basic degree of protection)
Other technical data (sheet catalogue)	With insulating surround: IP40 With door coupling rotary handle: IP66
Rated surge voltage invariability [Uimp ] >Main contacts	Tunnel terminal: IP10 Phase isolator and strip terminal: IP00
Rated surge voltage invariability [Uimp ] >Auxiliary contacts	Weight Temperature dependency, Derating Effective power loss
Rated operational voltage [Ue]	8000 V
Overvoltage category/pollution degree	6000 V
Rated insulation voltage [Ui ]	690 V AC
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 ] >Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics] >240 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] >400/415 V 50/60 Hz [Ics ]	20 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 ] >Maximum low-voltage h.b.c. fuse	37.5 kA
Rated short-circuit breaking capacity Icn [Icn ]	5 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 240 V 60 Hz [Icu]	355 A gG/gL
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]	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 480 V 60 Hz [Icu]	150 kA
Rated short-time withstand current >t = 0.3 s [Icw ]	100 kA
Rated short-time withstand current >t = 1 s [Icw ]	100 kA
Utilization category to IEC/EN 60947-2	1.9 kA
Lifespan, mechanical(of which max. 50 % trip by shunt/undervoltage release) [Operations]	1.9 kA
Lifespan, electrical >AC-1 >400 V 50/60 Hz [Operations]	A
Lifespan, electrical >AC-1 >690 V 50/60 Hz [Operations]	20000
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 >Max. operating frequency	6500
Total break time at short-circuit	5000
Standard equipment	120 Ops/h
Round copper conductor >Tunnel terminal >Solid	< 10 ms
Al conductors, Cu cable >Tunnel terminal >Solid	Box terminal
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Screw connection	1 x 16 mm2
Rated operational current for specified heat dissipation [In]	1 x 16 mm2
Equipment heat dissipation, current-dependent [Pvid]	M8
Operating ambient temperature min.	140 A
Operating ambient temperature max.	16.17 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.
Overload release current setting	Is the panel builder´s responsibility. The specifications for the switchgear must be observed.
Adjustment range undelayed short-circuit release	The device meets the requirements, provided the information in the instruction leaflet (IL) is observed.
With thermal protection	70 - 140 A
Phase failure sensitive	280 - 1960 A
Switch off technique	Yes
Rated operating voltage	Yes
Rated permanent current Iu	Electronic
Rated operation power at AC-3, 230 V	690 - 690 V
Rated operation power at AC-3, 400 V	140 A
Type of electrical connection of main circuit	45 kW
Type of control element	75 kW
Device construction	Other
With integrated auxiliary switch	Rocker lever
With integrated under voltage release	Built-in device fixed built-in technique
Number of poles	No
Rated short-circuit breaking capacity lcu at 400 V, AC	No
Degree of protection (IP)	3
Height	150 kA
Width	IP20
Depth	195 mm
Product Standards	105 mm
UL File No.	149 mm
UL Category Control No.	UL 489; CSA-C22.2 No. 5-09; IEC 60947-2; CE marking
CSA File No.	E31593
CSA Class No.	DIVQ
North America Certification	022086
Specially designed for North America	1432-01
Suitable for	UL listed, CSA certified
Current Limiting Circuit-Breaker	Yes, additionally calibrated according to UL 508.
Max. Voltage Rating	Feeder circuits, branch circuits
Degree of Protection	Yes
Characteristic curve	480 V
Characteristic curve	IEC: IP20; UL/CSA Type: -
Characteristic curve

As Mnelko, we are a reliable partner in industrial automation solutions, offering high-quality and innovative products with a wide product range to meet all the needs of your business. Our product portfolio consists of solutions designed based on the principles of high performance, durability, and efficiency to support modern industrial processes.
All of our products ensure maximum reliability even in challenging working conditions and help your business operations run smoothly. The products we offer in industrial automation, energy management, cabling solutions, and many other areas adapt flexibly to the needs of different sectors.
Additionally, our products are manufactured using only high-quality materials and comply with international standards. Through the solutions we provide, we enable our customers to increase operational efficiency and optimize costs. Our company closely follows technological advancements and continuously offers innovative products to help our customers gain a competitive advantage.
On each of our product pages, you can find comprehensive information about technical details, areas of use, and product features. You can explore all the products you need to strengthen your industrial processes on our website and enjoy a seamless purchasing experience.