NZMB1-S1,2-CNA
102906 NZMB1-S1,2-CNA
102906

Circuit-breaker, 3p, 1.2A
Series NZM..-S..CNA circuit-breakers cover all application cases with just four compact sizes and are suitable for use in the worldwide market. Modular function groups always make mounting flexible. With magnetic short-circuit release in connection with overload relay. With short-circuit release lacking overload trip. Notes: Switches conform to UL/CSA as well as IEC regulations. The rating plate contains IEC switching performance values.

Product range	Circuit-breaker
Protective function	Short-circuit protection
Standard/Approval	UL/CSA
Installation type	Fixed
Release system	Thermomagnetic release
Description	This circuit-breaker is only allowed to be used for UL/CSA applications. Motor protection in conjunction with contactor and overload relay With short-circuit release Without overload release Ir
Number of poles	3 pole
Standard equipment	Box terminal
Rated current = rated uninterrupted current [In = Iu]	1.2 A
Short-circuit releases [Irm ] >Non-delayed [Ii = In x …]	7 - 12
Standards	UL/CSA
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
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	6000 V
Rated surge voltage invariability [Uimp ] >Auxiliary contacts	6000 V
Rated operational voltage [Ue]	440 V AC
Overvoltage category/pollution degree	III/3
Rated insulation voltage [Ui ]	690 V
Lifespan, mechanical(of which max. 50 % trip by shunt/undervoltage release) [Operations]	20000
Lifespan, electrical >AC--3 >415 V 50/60 Hz [Operations]	7500
Lifespan, electrical >Max. operating frequency	120 Ops/h
Total break time at short-circuit	< 10 ms
Standard equipment	Box terminal
Round copper conductor >Box terminal >Solid	1 x (12 … 6) mm2
Round copper conductor >Box terminal >Stranded	1 x (4 … 2/0) mm2
Round copper conductor >Tunnel terminal >Solid	1 x 6 mm2
Round copper conductor >Tunnel terminal >Stranded >Stranded	1 x (4 … 3/0) mm2
Round copper conductor >Bolt terminal and rear-side connection >Direct on the switch >Solid	1 x (12 … 6) 2 x (9 … 6) mm2
Round copper conductor >Bolt terminal and rear-side connection >Direct on the switch >Stranded	1 x (4 … 2/0) mm2
Al conductors, Cu cable >Tunnel terminal >Solid	1 x 16 mm2
Cu strip (number of segments x width x segment thickness) >Box terminal [min.]	2 x 9 x 0.8 mm
Cu strip (number of segments x width x segment thickness) >Box terminal [max.]	9 x 9 x 0.8 mm
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Screw connection	M6
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Direct on the switch [min.]	12 x 5 mm
Copper busbar (width x thickness) [mm] >Bolt terminal and rear-side connection >Direct on the switch [max.]	16 x 5 mm
Control cables	1 x (18 … 14) 2 x (18 … 16) mm2
Rated operational current for specified heat dissipation [In]	1.2 A
Equipment heat dissipation, current-dependent [Pvid]	1.78 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.
Overload release current setting	0 - 0 A
Adjustment range undelayed short-circuit release	7 - 12 A
With thermal protection	No
Phase failure sensitive	No
Switch off technique	Magnetic
Rated operating voltage	440 - 440 V
Rated permanent current Iu	1.2 A
Rated operation power at AC-3, 230 V	0.18 kW
Rated operation power at AC-3, 400 V	0.37 kW
Type of electrical connection of main circuit	Other
Type of control element	Rocker lever
Device construction	Built-in device fixed built-in technique
With integrated auxiliary switch	No
With integrated under voltage release	No
Number of poles	3
Rated short-circuit breaking capacity lcu at 400 V, AC	25 kA
Degree of protection (IP)	IP20
Height	165.5 mm
Width	90 mm
Depth	88 mm
Product Standards	UL 489; CSA-C22.2 No. 5-09
UL File No.	E31593
UL Category Control No.	DKPU2
CSA File No.	022086
CSA Class No.	1432-01
North America Certification	UL recognized, CSA certified
Conditions of Acceptability	Only used in motor circuits in conjunction with suitable contactor and overload relay. SCCR value applies for complete combination starter only, consisting of instantaneous trip circuit breaker, contactor and overload relay.
Specially designed for North America	Yes
Suitable for	Branch circuits, feeder circuits
Current Limiting Circuit-Breaker	No
Max. Voltage Rating	480Y/277 V
Degree of Protection	UL/CSA Type: -
Characteristic curve
Characteristic curve	Short-circuit protection only!
Characteristic curve

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