NZMN3-4-A320-SVE
168508 NZMN3-4-A320-SVE
168508

Circuit-breaker, 4p, 320A, plug-in module
Series NZM..-A circuit-breakers cover all application cases with just four compact sizes and are suitable for the IEC market. Modular function groups always make mounting flexible. With thermomagnetic releases for systems and cable protection. Notes: set value in neutral conductor is synchronous with set value Ir of phase conductor.

400/415 V 50 Hz [Icu ]	50 kA
Rated current = rated uninterrupted current [In = Iu]	320 A
Neutral conductor [% of phase conductor]	100 CSA
Overload trip >Main pole [Ir ]	250 - 320 A
Short-circuit releases [Irm ] >Non-delayed [Ii = In x …]	6 - 10
Ambient temperature >Ambient temperature, storage	- 40 - + 70 °C
Ambient temperature >Operation	-25 - +70 °C
Rated current = rated uninterrupted current [In = Iu]	320 A
Use in unearthed supply systems	≦ 690 V
Rated short-circuit making capacity [Icm ] >240 V [Icm ]	330 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 ]	50 kA
Rated short-circuit breaking capacity Icn [Icn ] >Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >500 V DC [Icu]	30 kA
Rated short-circuit breaking capacity Icn [Icn ] >Icu to IEC/EN 60947 test cycle O-t-CO [Icu] >750 V DC [Icu]	30 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]	30 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]	30 kA
Accessories required	NZM3-XSVS
Optional accessories	Box terminal Tunnel terminal connection on rear
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 >Direct on the switch [max.]	30 x 10 + 30 x 5 mm
Equipment heat dissipation, current-dependent [Pvid]	94 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	320 A
Rated voltage	690 - 690 V
Rated short-circuit breaking capacity lcu at 400 V, 50 Hz	50 kA
Overload release current setting	250 - 320 A
Adjustment range short-term delayed short-circuit release	0 - 0 A
Adjustment range undelayed short-circuit release	6 - 10 A
Integrated earth fault protection	No
Type of electrical connection of main circuit	Screw connection
Device construction	Built-in device plug-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	4
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

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